diff --git a/.env_web b/.env_web
index 04860d2e2..0b15d6d85 100644
--- a/.env_web
+++ b/.env_web
@@ -7,4 +7,4 @@ ZBX_SERVER_NAME=Composed installation
 # ZBX_UPLOADMAXFILESIZE=2M
 # ZBX_MAXINPUTTIME=300
 # Timezone one of: http://php.net/manual/en/timezones.php
-# TZ=Europe/Riga
+# PHP_TZ=Europe/Riga
diff --git a/agent/alpine/Dockerfile b/agent/alpine/Dockerfile
index 5d66da3c2..78262b92c 100644
--- a/agent/alpine/Dockerfile
+++ b/agent/alpine/Dockerfile
@@ -19,6 +19,7 @@ RUN addgroup zabbix && \
     chown --quiet -R zabbix:root /var/lib/zabbix && \
     apk update && \
     apk add ${APK_FLAGS_PERSISTANT} \
+            iputils \
             supervisor \
             bash \
             coreutils \
diff --git a/agent/alpine/run_zabbix_component.sh b/agent/alpine/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/agent/alpine/run_zabbix_component.sh
+++ b/agent/alpine/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/agent/ubuntu/run_zabbix_component.sh b/agent/ubuntu/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/agent/ubuntu/run_zabbix_component.sh
+++ b/agent/ubuntu/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/java-gateway/alpine/run_zabbix_component.sh b/java-gateway/alpine/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/java-gateway/alpine/run_zabbix_component.sh
+++ b/java-gateway/alpine/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/java-gateway/ubuntu/run_zabbix_component.sh b/java-gateway/ubuntu/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/java-gateway/ubuntu/run_zabbix_component.sh
+++ b/java-gateway/ubuntu/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/proxy-mysql/alpine/Dockerfile b/proxy-mysql/alpine/Dockerfile
index 357ebdb1f..36dee6561 100644
--- a/proxy-mysql/alpine/Dockerfile
+++ b/proxy-mysql/alpine/Dockerfile
@@ -29,6 +29,7 @@ RUN addgroup zabbix && \
     mkdir -p /usr/share/doc/zabbix-proxy-${DB_TYPE} && \
     apk update && \
     apk add ${APK_FLAGS_PERSISTANT} \
+            iputils \
             supervisor \
             bash \
             mariadb-client-libs \
diff --git a/proxy-mysql/alpine/run_zabbix_component.sh b/proxy-mysql/alpine/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/proxy-mysql/alpine/run_zabbix_component.sh
+++ b/proxy-mysql/alpine/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/proxy-mysql/ubuntu/run_zabbix_component.sh b/proxy-mysql/ubuntu/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/proxy-mysql/ubuntu/run_zabbix_component.sh
+++ b/proxy-mysql/ubuntu/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/proxy-sqlite3/alpine/Dockerfile b/proxy-sqlite3/alpine/Dockerfile
index 03d353729..02cfd6844 100644
--- a/proxy-sqlite3/alpine/Dockerfile
+++ b/proxy-sqlite3/alpine/Dockerfile
@@ -26,6 +26,7 @@ RUN addgroup zabbix && \
     mkdir -p /usr/lib/zabbix/externalscripts && \
     apk update && \
     apk add ${APK_FLAGS_PERSISTANT} \
+            iputils \
             supervisor \
             bash \
             sqlite-libs \
diff --git a/proxy-sqlite3/alpine/run_zabbix_component.sh b/proxy-sqlite3/alpine/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/proxy-sqlite3/alpine/run_zabbix_component.sh
+++ b/proxy-sqlite3/alpine/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/proxy-sqlite3/ubuntu/run_zabbix_component.sh b/proxy-sqlite3/ubuntu/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/proxy-sqlite3/ubuntu/run_zabbix_component.sh
+++ b/proxy-sqlite3/ubuntu/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/server-mysql/alpine/Dockerfile b/server-mysql/alpine/Dockerfile
index e41db341f..b67686918 100644
--- a/server-mysql/alpine/Dockerfile
+++ b/server-mysql/alpine/Dockerfile
@@ -30,6 +30,7 @@ RUN addgroup zabbix && \
     mkdir -p /usr/share/doc/zabbix-server-${DB_TYPE} && \
     apk update && \
     apk add ${APK_FLAGS_PERSISTANT} \
+            iputils \
             supervisor \
             bash \
             mariadb-client-libs \
diff --git a/server-mysql/alpine/run_zabbix_component.sh b/server-mysql/alpine/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/server-mysql/alpine/run_zabbix_component.sh
+++ b/server-mysql/alpine/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/server-mysql/ubuntu/run_zabbix_component.sh b/server-mysql/ubuntu/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/server-mysql/ubuntu/run_zabbix_component.sh
+++ b/server-mysql/ubuntu/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/server-pgsql/alpine/Dockerfile b/server-pgsql/alpine/Dockerfile
index 5a4bcbcf2..c8e045c26 100644
--- a/server-pgsql/alpine/Dockerfile
+++ b/server-pgsql/alpine/Dockerfile
@@ -30,6 +30,7 @@ RUN addgroup zabbix && \
     mkdir -p /usr/share/doc/zabbix-server-${DB_TYPE} && \
     apk update && \
     apk add ${APK_FLAGS_PERSISTANT} \
+            iputils \
             supervisor \
             bash \
             postgresql-client \
diff --git a/server-pgsql/alpine/run_zabbix_component.sh b/server-pgsql/alpine/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/server-pgsql/alpine/run_zabbix_component.sh
+++ b/server-pgsql/alpine/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/server-pgsql/ubuntu/run_zabbix_component.sh b/server-pgsql/ubuntu/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/server-pgsql/ubuntu/run_zabbix_component.sh
+++ b/server-pgsql/ubuntu/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/web-apache-mysql/alpine/README.md b/web-apache-mysql/alpine/README.md
index 77a16eacc..c7fe61122 100644
--- a/web-apache-mysql/alpine/README.md
+++ b/web-apache-mysql/alpine/README.md
@@ -38,17 +38,17 @@ The image based on Apache2 web server with MySQL database support.
 
 Start a Zabbix web-interface container as follows:
 
-    docker run --name some-zabbix-web-apache-mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-apache-mysql:tag
+    docker run --name some-zabbix-web-apache-mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-apache-mysql:tag
 
 Where `some-zabbix-web-apache-mysql` is the name you want to assign to your container, `some-mysql-server` is IP or DNS name of MySQL server, `some-user` is user to connect to Zabbix database on MySQL server, `some-password` is the password to connect to MySQL server, `some-zabbix-server` is IP or DNS name of Zabbix server or proxy, `some-timezone` is PHP like timezone name and `tag` is the tag specifying the version you want. See the list above for relevant tags, or look at the [full list of tags](https://hub.docker.com/r/zabbix/zabbix-web-apache-mysql/tags/).
 
 ## Linking the container to Zabbix server
 
-    docker run --name some-zabbix-web-apache-mysql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-apache-mysql:tag
+    docker run --name some-zabbix-web-apache-mysql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-apache-mysql:tag
 
 ## Linking the container to MySQL database
 
-    docker run --name some-zabbix-web-apache-mysql --link some-mysql-server:mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-apache-mysql:tag
+    docker run --name some-zabbix-web-apache-mysql --link some-mysql-server:mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-apache-mysql:tag
 
 ## Container shell access and viewing Zabbix web interface logs
 
@@ -92,7 +92,7 @@ These variables are used by Zabbix web interface to connect to Zabbix database.
 
 The variable is Zabbix database name. By default, value is `zabbix`.
 
-### `TZ`
+### `PHP_TZ`
 
 The variable is timezone in PHP format. Full list of supported timezones are available on [`php.net`](http://php.net/manual/en/timezones.php). By default, value is 'Europe/Riga'.
 
diff --git a/web-apache-mysql/alpine/run_zabbix_component.sh b/web-apache-mysql/alpine/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/web-apache-mysql/alpine/run_zabbix_component.sh
+++ b/web-apache-mysql/alpine/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/web-apache-mysql/ubuntu/README.md b/web-apache-mysql/ubuntu/README.md
index 77a16eacc..c7fe61122 100644
--- a/web-apache-mysql/ubuntu/README.md
+++ b/web-apache-mysql/ubuntu/README.md
@@ -38,17 +38,17 @@ The image based on Apache2 web server with MySQL database support.
 
 Start a Zabbix web-interface container as follows:
 
-    docker run --name some-zabbix-web-apache-mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-apache-mysql:tag
+    docker run --name some-zabbix-web-apache-mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-apache-mysql:tag
 
 Where `some-zabbix-web-apache-mysql` is the name you want to assign to your container, `some-mysql-server` is IP or DNS name of MySQL server, `some-user` is user to connect to Zabbix database on MySQL server, `some-password` is the password to connect to MySQL server, `some-zabbix-server` is IP or DNS name of Zabbix server or proxy, `some-timezone` is PHP like timezone name and `tag` is the tag specifying the version you want. See the list above for relevant tags, or look at the [full list of tags](https://hub.docker.com/r/zabbix/zabbix-web-apache-mysql/tags/).
 
 ## Linking the container to Zabbix server
 
-    docker run --name some-zabbix-web-apache-mysql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-apache-mysql:tag
+    docker run --name some-zabbix-web-apache-mysql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-apache-mysql:tag
 
 ## Linking the container to MySQL database
 
-    docker run --name some-zabbix-web-apache-mysql --link some-mysql-server:mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-apache-mysql:tag
+    docker run --name some-zabbix-web-apache-mysql --link some-mysql-server:mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-apache-mysql:tag
 
 ## Container shell access and viewing Zabbix web interface logs
 
@@ -92,7 +92,7 @@ These variables are used by Zabbix web interface to connect to Zabbix database.
 
 The variable is Zabbix database name. By default, value is `zabbix`.
 
-### `TZ`
+### `PHP_TZ`
 
 The variable is timezone in PHP format. Full list of supported timezones are available on [`php.net`](http://php.net/manual/en/timezones.php). By default, value is 'Europe/Riga'.
 
diff --git a/web-apache-mysql/ubuntu/run_zabbix_component.sh b/web-apache-mysql/ubuntu/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/web-apache-mysql/ubuntu/run_zabbix_component.sh
+++ b/web-apache-mysql/ubuntu/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/web-apache-pgsql/alpine/README.md b/web-apache-pgsql/alpine/README.md
index a45235b6f..8c714160e 100644
--- a/web-apache-pgsql/alpine/README.md
+++ b/web-apache-pgsql/alpine/README.md
@@ -38,17 +38,17 @@ The image based on Apache2 web server with PostgreSQL database support.
 
 Start a Zabbix web-interface container as follows:
 
-    docker run --name some-zabbix-web-apache-pgsql -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-apache-pgsql:tag
+    docker run --name some-zabbix-web-apache-pgsql -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-apache-pgsql:tag
 
 Where `some-zabbix-web-apache-pgsql` is the name you want to assign to your container, `some-postgres-server` is IP or DNS name of PostgreSQL server, `some-user` is user to connect to Zabbix database on PostgreSQL server, `some-password` is the password to connect to PostgreSQL server, `some-zabbix-server` is IP or DNS name of Zabbix server or proxy, `some-timezone` is PHP like timezone name and `tag` is the tag specifying the version you want. See the list above for relevant tags, or look at the [full list of tags](https://hub.docker.com/r/zabbix/zabbix-web-apache-pgsql/tags/).
 
 ## Linking the container to Zabbix server
 
-    docker run --name some-zabbix-web-apache-pgsql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-apache-pgsql:tag
+    docker run --name some-zabbix-web-apache-pgsql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-apache-pgsql:tag
 
 ## Linking the container to PostgreSQL database
 
-    docker run --name some-zabbix-web-apache-pgsql --link some-postgres-server:postgres -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-apache-pgsql:tag
+    docker run --name some-zabbix-web-apache-pgsql --link some-postgres-server:postgres -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-apache-pgsql:tag
 
 ## Container shell access and viewing Zabbix web interface logs
 
@@ -92,7 +92,7 @@ These variables are used by Zabbix web interface to connect to Zabbix database.
 
 The variable is Zabbix database name. By default, value is `zabbix`.
 
-### `TZ`
+### `PHP_TZ`
 
 The variable is timezone in PHP format. Full list of supported timezones are available on [`php.net`](http://php.net/manual/en/timezones.php). By default, value is 'Europe/Riga'.
 
diff --git a/web-apache-pgsql/alpine/run_zabbix_component.sh b/web-apache-pgsql/alpine/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/web-apache-pgsql/alpine/run_zabbix_component.sh
+++ b/web-apache-pgsql/alpine/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/web-apache-pgsql/ubuntu/README.md b/web-apache-pgsql/ubuntu/README.md
index a45235b6f..8c714160e 100644
--- a/web-apache-pgsql/ubuntu/README.md
+++ b/web-apache-pgsql/ubuntu/README.md
@@ -38,17 +38,17 @@ The image based on Apache2 web server with PostgreSQL database support.
 
 Start a Zabbix web-interface container as follows:
 
-    docker run --name some-zabbix-web-apache-pgsql -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-apache-pgsql:tag
+    docker run --name some-zabbix-web-apache-pgsql -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-apache-pgsql:tag
 
 Where `some-zabbix-web-apache-pgsql` is the name you want to assign to your container, `some-postgres-server` is IP or DNS name of PostgreSQL server, `some-user` is user to connect to Zabbix database on PostgreSQL server, `some-password` is the password to connect to PostgreSQL server, `some-zabbix-server` is IP or DNS name of Zabbix server or proxy, `some-timezone` is PHP like timezone name and `tag` is the tag specifying the version you want. See the list above for relevant tags, or look at the [full list of tags](https://hub.docker.com/r/zabbix/zabbix-web-apache-pgsql/tags/).
 
 ## Linking the container to Zabbix server
 
-    docker run --name some-zabbix-web-apache-pgsql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-apache-pgsql:tag
+    docker run --name some-zabbix-web-apache-pgsql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-apache-pgsql:tag
 
 ## Linking the container to PostgreSQL database
 
-    docker run --name some-zabbix-web-apache-pgsql --link some-postgres-server:postgres -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-apache-pgsql:tag
+    docker run --name some-zabbix-web-apache-pgsql --link some-postgres-server:postgres -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-apache-pgsql:tag
 
 ## Container shell access and viewing Zabbix web interface logs
 
@@ -92,7 +92,7 @@ These variables are used by Zabbix web interface to connect to Zabbix database.
 
 The variable is Zabbix database name. By default, value is `zabbix`.
 
-### `TZ`
+### `PHP_TZ`
 
 The variable is timezone in PHP format. Full list of supported timezones are available on [`php.net`](http://php.net/manual/en/timezones.php). By default, value is 'Europe/Riga'.
 
diff --git a/web-apache-pgsql/ubuntu/run_zabbix_component.sh b/web-apache-pgsql/ubuntu/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/web-apache-pgsql/ubuntu/run_zabbix_component.sh
+++ b/web-apache-pgsql/ubuntu/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/web-nginx-mysql/alpine/README.md b/web-nginx-mysql/alpine/README.md
index 48c7efe43..96ac48760 100644
--- a/web-nginx-mysql/alpine/README.md
+++ b/web-nginx-mysql/alpine/README.md
@@ -38,17 +38,17 @@ The image based on Nginx web server with MySQL database support.
 
 Start a Zabbix web-interface container as follows:
 
-    docker run --name some-zabbix-web-nginx-mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-nginx-mysql:tag
+    docker run --name some-zabbix-web-nginx-mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-mysql:tag
 
 Where `some-zabbix-web-nginx-mysql` is the name you want to assign to your container, `some-mysql-server` is IP or DNS name of MySQL server, `some-user` is user to connect to Zabbix database on MySQL server, `some-password` is the password to connect to MySQL server, `some-zabbix-server` is IP or DNS name of Zabbix server or proxy, `some-timezone` is PHP like timezone name and `tag` is the tag specifying the version you want. See the list above for relevant tags, or look at the [full list of tags](https://hub.docker.com/r/zabbix/zabbix-web-nginx-mysql/tags/).
 
 ## Linking the container to Zabbix server
 
-    docker run --name some-zabbix-web-nginx-mysql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-nginx-mysql:tag
+    docker run --name some-zabbix-web-nginx-mysql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-mysql:tag
 
 ## Linking the container to MySQL database
 
-    docker run --name some-zabbix-web-nginx-mysql --link some-mysql-server:mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-nginx-mysql:tag
+    docker run --name some-zabbix-web-nginx-mysql --link some-mysql-server:mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-mysql:tag
 
 ## Container shell access and viewing Zabbix web interface logs
 
@@ -92,7 +92,7 @@ These variables are used by Zabbix web interface to connect to Zabbix database.
 
 The variable is Zabbix database name. By default, value is `zabbix`.
 
-### `TZ`
+### `PHP_TZ`
 
 The variable is timezone in PHP format. Full list of supported timezones are available on [`php.net`](http://php.net/manual/en/timezones.php). By default, value is 'Europe/Riga'.
 
diff --git a/web-nginx-mysql/alpine/run_zabbix_component.sh b/web-nginx-mysql/alpine/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/web-nginx-mysql/alpine/run_zabbix_component.sh
+++ b/web-nginx-mysql/alpine/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/web-nginx-mysql/ubuntu/README.md b/web-nginx-mysql/ubuntu/README.md
index 48c7efe43..96ac48760 100644
--- a/web-nginx-mysql/ubuntu/README.md
+++ b/web-nginx-mysql/ubuntu/README.md
@@ -38,17 +38,17 @@ The image based on Nginx web server with MySQL database support.
 
 Start a Zabbix web-interface container as follows:
 
-    docker run --name some-zabbix-web-nginx-mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-nginx-mysql:tag
+    docker run --name some-zabbix-web-nginx-mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-mysql:tag
 
 Where `some-zabbix-web-nginx-mysql` is the name you want to assign to your container, `some-mysql-server` is IP or DNS name of MySQL server, `some-user` is user to connect to Zabbix database on MySQL server, `some-password` is the password to connect to MySQL server, `some-zabbix-server` is IP or DNS name of Zabbix server or proxy, `some-timezone` is PHP like timezone name and `tag` is the tag specifying the version you want. See the list above for relevant tags, or look at the [full list of tags](https://hub.docker.com/r/zabbix/zabbix-web-nginx-mysql/tags/).
 
 ## Linking the container to Zabbix server
 
-    docker run --name some-zabbix-web-nginx-mysql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-nginx-mysql:tag
+    docker run --name some-zabbix-web-nginx-mysql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-mysql:tag
 
 ## Linking the container to MySQL database
 
-    docker run --name some-zabbix-web-nginx-mysql --link some-mysql-server:mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-nginx-mysql:tag
+    docker run --name some-zabbix-web-nginx-mysql --link some-mysql-server:mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-mysql:tag
 
 ## Container shell access and viewing Zabbix web interface logs
 
@@ -92,7 +92,7 @@ These variables are used by Zabbix web interface to connect to Zabbix database.
 
 The variable is Zabbix database name. By default, value is `zabbix`.
 
-### `TZ`
+### `PHP_TZ`
 
 The variable is timezone in PHP format. Full list of supported timezones are available on [`php.net`](http://php.net/manual/en/timezones.php). By default, value is 'Europe/Riga'.
 
diff --git a/web-nginx-mysql/ubuntu/run_zabbix_component.sh b/web-nginx-mysql/ubuntu/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/web-nginx-mysql/ubuntu/run_zabbix_component.sh
+++ b/web-nginx-mysql/ubuntu/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/web-nginx-pgsql/alpine/README.md b/web-nginx-pgsql/alpine/README.md
index fa63c144f..62e0684a6 100644
--- a/web-nginx-pgsql/alpine/README.md
+++ b/web-nginx-pgsql/alpine/README.md
@@ -38,17 +38,17 @@ The image based on Nginx web server with PostgreSQL database support.
 
 Start a Zabbix web-interface container as follows:
 
-    docker run --name some-zabbix-web-nginx-pgsql -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag
+    docker run --name some-zabbix-web-nginx-pgsql -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag
 
 Where `some-zabbix-web-nginx-pgsql` is the name you want to assign to your container, `some-postgres-server` is IP or DNS name of PostgreSQL server, `some-user` is user to connect to Zabbix database on PostgreSQL server, `some-password` is the password to connect to PostgreSQL server, `some-zabbix-server` is IP or DNS name of Zabbix server or proxy, `some-timezone` is PHP like timezone name and `tag` is the tag specifying the version you want. See the list above for relevant tags, or look at the [full list of tags](https://hub.docker.com/r/zabbix/zabbix-web-nginx-pgsql/tags/).
 
 ## Linking the container to Zabbix server
 
-    docker run --name some-zabbix-web-nginx-pgsql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag
+    docker run --name some-zabbix-web-nginx-pgsql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag
 
 ## Linking the container to PostgreSQL database
 
-    docker run --name some-zabbix-web-nginx-pgsql --link some-postgres-server:postgres -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag
+    docker run --name some-zabbix-web-nginx-pgsql --link some-postgres-server:postgres -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag
 
 ## Container shell access and viewing Zabbix web interface logs
 
@@ -92,7 +92,7 @@ These variables are used by Zabbix web interface to connect to Zabbix database.
 
 The variable is Zabbix database name. By default, value is `zabbix`.
 
-### `TZ`
+### `PHP_TZ`
 
 The variable is timezone in PHP format. Full list of supported timezones are available on [`php.net`](http://php.net/manual/en/timezones.php). By default, value is 'Europe/Riga'.
 
diff --git a/web-nginx-pgsql/alpine/run_zabbix_component.sh b/web-nginx-pgsql/alpine/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/web-nginx-pgsql/alpine/run_zabbix_component.sh
+++ b/web-nginx-pgsql/alpine/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi
diff --git a/web-nginx-pgsql/ubuntu/README.md b/web-nginx-pgsql/ubuntu/README.md
index fa63c144f..62e0684a6 100644
--- a/web-nginx-pgsql/ubuntu/README.md
+++ b/web-nginx-pgsql/ubuntu/README.md
@@ -38,17 +38,17 @@ The image based on Nginx web server with PostgreSQL database support.
 
 Start a Zabbix web-interface container as follows:
 
-    docker run --name some-zabbix-web-nginx-pgsql -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag
+    docker run --name some-zabbix-web-nginx-pgsql -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag
 
 Where `some-zabbix-web-nginx-pgsql` is the name you want to assign to your container, `some-postgres-server` is IP or DNS name of PostgreSQL server, `some-user` is user to connect to Zabbix database on PostgreSQL server, `some-password` is the password to connect to PostgreSQL server, `some-zabbix-server` is IP or DNS name of Zabbix server or proxy, `some-timezone` is PHP like timezone name and `tag` is the tag specifying the version you want. See the list above for relevant tags, or look at the [full list of tags](https://hub.docker.com/r/zabbix/zabbix-web-nginx-pgsql/tags/).
 
 ## Linking the container to Zabbix server
 
-    docker run --name some-zabbix-web-nginx-pgsql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag
+    docker run --name some-zabbix-web-nginx-pgsql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag
 
 ## Linking the container to PostgreSQL database
 
-    docker run --name some-zabbix-web-nginx-pgsql --link some-postgres-server:postgres -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag
+    docker run --name some-zabbix-web-nginx-pgsql --link some-postgres-server:postgres -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag
 
 ## Container shell access and viewing Zabbix web interface logs
 
@@ -92,7 +92,7 @@ These variables are used by Zabbix web interface to connect to Zabbix database.
 
 The variable is Zabbix database name. By default, value is `zabbix`.
 
-### `TZ`
+### `PHP_TZ`
 
 The variable is timezone in PHP format. Full list of supported timezones are available on [`php.net`](http://php.net/manual/en/timezones.php). By default, value is 'Europe/Riga'.
 
diff --git a/web-nginx-pgsql/ubuntu/run_zabbix_component.sh b/web-nginx-pgsql/ubuntu/run_zabbix_component.sh
index 32ad1961c..cac24375e 100755
--- a/web-nginx-pgsql/ubuntu/run_zabbix_component.sh
+++ b/web-nginx-pgsql/ubuntu/run_zabbix_component.sh
@@ -26,7 +26,7 @@ ZBX_SERVER_HOST=${ZBX_SERVER_HOST:-"zabbix-server"}
 ZBX_SERVER_PORT=${ZBX_SERVER_PORT:-"10051"}
 
 # Default timezone for web interface
-TZ=${TZ:-"Europe/Riga"}
+PHP_TZ=${PHP_TZ:-"Europe/Riga"}
 
 # Default directories
 # User 'zabbix' home directory
@@ -700,7 +700,7 @@ prepare_zbx_web_config() {
         update_config_var "$PHP_CONFIG_FILE" "post_max_size" "${ZBX_POSTMAXSIZE:-"16M"}"
         update_config_var "$PHP_CONFIG_FILE" "upload_max_filesize" "${ZBX_UPLOADMAXFILESIZE:-"2M"}"
         update_config_var "$PHP_CONFIG_FILE" "max_input_time" "${ZBX_MAXINPUTTIME:-"300"}"
-        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${TZ}"
+        update_config_var "$PHP_CONFIG_FILE" "date.timezone" "${PHP_TZ}"
     else
         echo "**** Zabbix related PHP configuration file not found"
     fi