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392 lines
10 KiB
PHP
392 lines
10 KiB
PHP
<?php
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/*
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V4.20 22 Feb 2004 (c) 2000-2004 John Lim. All rights reserved.
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Released under both BSD license and Lesser GPL library license.
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Whenever there is any discrepancy between the two licenses,
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the BSD license will take precedence.
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Set tabs to 4 for best viewing.
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Latest version is available at http://php.weblogs.com/
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Informix port by Mitchell T. Young (mitch@youngfamily.org)
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Further mods by "Samuel CARRIERE" <samuel_carriere@hotmail.com>
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*/
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if (!defined('IFX_SCROLL')) define('IFX_SCROLL',1);
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class ADODB_informix72 extends ADOConnection {
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var $databaseType = "informix72";
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var $dataProvider = "informix";
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var $replaceQuote = "''"; // string to use to replace quotes
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var $fmtDate = "'Y-m-d'";
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var $fmtTimeStamp = "'Y-m-d H:i:s'";
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var $hasInsertID = true;
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var $hasAffectedRows = true;
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var $upperCase = 'upper';
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var $substr = 'substr';
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var $metaTablesSQL="select tabname from systables";
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var $metaColumnsSQL =
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"select c.colname, c.coltype, c.collength, d.default
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from syscolumns c, systables t,sysdefaults d
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where c.tabid=t.tabid and d.tabid=t.tabid and d.colno=c.colno and tabname='%s'";
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// var $metaColumnsSQL = "select colname, coltype, collength from syscolumns c, systables t where c.tabid=t.tabid and tabname='%s'";
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var $concat_operator = '||';
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var $lastQuery = false;
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var $has_insertid = true;
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var $_autocommit = true;
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var $_bindInputArray = true; // set to true if ADOConnection.Execute() permits binding of array parameters.
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var $sysDate = 'TODAY';
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var $sysTimeStamp = 'CURRENT';
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var $cursorType = IFX_SCROLL; // IFX_SCROLL or IFX_HOLD or 0
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function ADODB_informix72()
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{
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// alternatively, use older method:
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//putenv("DBDATE=Y4MD-");
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// force ISO date format
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putenv('GL_DATE=%Y-%m-%d');
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if (function_exists('ifx_byteasvarchar')) {
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ifx_byteasvarchar(1); // Mode "0" will return a blob id, and mode "1" will return a varchar with text content.
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ifx_textasvarchar(1); // Mode "0" will return a blob id, and mode "1" will return a varchar with text content.
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ifx_blobinfile_mode(0); // Mode "0" means save Byte-Blobs in memory, and mode "1" means save Byte-Blobs in a file.
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}
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}
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function ServerInfo()
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{
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if (isset($this->version)) return $this->version;
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$arr['description'] = $this->GetOne("select DBINFO('version','full') from systables where tabid = 1");
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$arr['version'] = $this->GetOne("select DBINFO('version','major')||"."||DBINFO('version','minor') from systables where tabid = 1");
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$this->version = $arr;
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return $arr;
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}
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function _insertid()
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{
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$sqlca =ifx_getsqlca($this->lastQuery);
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return @$sqlca["sqlerrd1"];
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}
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function _affectedrows()
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{
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if ($this->lastQuery) {
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return @ifx_affected_rows ($this->lastQuery);
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}
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return 0;
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}
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function BeginTrans()
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{
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if ($this->transOff) return true;
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$this->transCnt += 1;
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$this->Execute('BEGIN');
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$this->_autocommit = false;
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return true;
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}
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function CommitTrans($ok=true)
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{
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if (!$ok) return $this->RollbackTrans();
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if ($this->transOff) return true;
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if ($this->transCnt) $this->transCnt -= 1;
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$this->Execute('COMMIT');
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$this->_autocommit = true;
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return true;
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}
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function RollbackTrans()
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{
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if ($this->transOff) return true;
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if ($this->transCnt) $this->transCnt -= 1;
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$this->Execute('ROLLBACK');
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$this->_autocommit = true;
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return true;
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}
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function RowLock($tables,$where)
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{
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if ($this->_autocommit) $this->BeginTrans();
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return $this->GetOne("select 1 as ignore from $tables where $where for update");
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}
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/* Returns: the last error message from previous database operation
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Note: This function is NOT available for Microsoft SQL Server. */
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function ErrorMsg()
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{
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if (!empty($this->_logsql)) return $this->_errorMsg;
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$this->_errorMsg = ifx_errormsg();
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return $this->_errorMsg;
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}
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function ErrorNo()
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{
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preg_match("/.*SQLCODE=([^\]]*)/",ifx_error(),$parse); //!EOS
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if (is_array($parse) && isset($parse[1])) return (int)$parse[1];
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return 0;
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}
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function &MetaColumns($table)
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{
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global $ADODB_FETCH_MODE;
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if (!empty($this->metaColumnsSQL)) {
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$save = $ADODB_FETCH_MODE;
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$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
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if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
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$rs = $this->Execute(sprintf($this->metaColumnsSQL,$table));
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if (isset($savem)) $this->SetFetchMode($savem);
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$ADODB_FETCH_MODE = $save;
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if ($rs === false) return false;
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$retarr = array();
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while (!$rs->EOF) { //print_r($rs->fields);
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$fld = new ADOFieldObject();
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$fld->name = $rs->fields[0];
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$fld->type = $rs->fields[1];
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$fld->max_length = $rs->fields[2];
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if (trim($rs->fields[3]) != "AAAAAA 0") {
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$fld->has_default = 1;
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$fld->default_value = $rs->fields[3];
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} else {
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$fld->has_default = 0;
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}
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$retarr[strtolower($fld->name)] = $fld;
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$rs->MoveNext();
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}
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$rs->Close();
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return $retarr;
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}
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return false;
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}
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function &xMetaColumns($table)
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{
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return ADOConnection::MetaColumns($table,false);
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}
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function UpdateBlob($table, $column, $val, $where, $blobtype = 'BLOB')
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{
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$type = ($blobtype == 'TEXT') ? 1 : 0;
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$blobid = ifx_create_blob($type,0,$val);
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return $this->Execute("UPDATE $table SET $column=(?) WHERE $where",array($blobid));
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}
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function BlobDecode($blobid)
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{
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return function_exists('ifx_byteasvarchar') ? $blobid : @ifx_get_blob($blobid);
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}
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// returns true or false
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function _connect($argHostname, $argUsername, $argPassword, $argDatabasename)
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{
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if (!function_exists('ifx_connect')) return false;
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$dbs = $argDatabasename . "@" . $argHostname;
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if ($argHostname) putenv("INFORMIXSERVER=$argHostname");
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putenv("INFORMIXSERVER=".trim($argHostname));
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$this->_connectionID = ifx_connect($dbs,$argUsername,$argPassword);
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if ($this->_connectionID === false) return false;
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#if ($argDatabasename) return $this->SelectDB($argDatabasename);
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return true;
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}
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// returns true or false
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function _pconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
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{
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if (!function_exists('ifx_connect')) return false;
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$dbs = $argDatabasename . "@" . $argHostname;
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putenv("INFORMIXSERVER=".trim($argHostname));
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$this->_connectionID = ifx_pconnect($dbs,$argUsername,$argPassword);
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if ($this->_connectionID === false) return false;
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#if ($argDatabasename) return $this->SelectDB($argDatabasename);
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return true;
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}
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/*
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// ifx_do does not accept bind parameters - weird ???
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function Prepare($sql)
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{
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$stmt = ifx_prepare($sql);
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if (!$stmt) return $sql;
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else return array($sql,$stmt);
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}
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*/
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// returns query ID if successful, otherwise false
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function _query($sql,$inputarr)
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{
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global $ADODB_COUNTRECS;
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// String parameters have to be converted using ifx_create_char
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if ($inputarr) {
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foreach($inputarr as $v) {
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if (gettype($v) == 'string') {
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$tab[] = ifx_create_char($v);
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}
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else {
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$tab[] = $v;
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}
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}
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}
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// In case of select statement, we use a scroll cursor in order
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// to be able to call "move", or "movefirst" statements
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if (!$ADODB_COUNTRECS && preg_match("/^\s*select/is", $sql)) {
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if ($inputarr) {
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$this->lastQuery = ifx_query($sql,$this->_connectionID, $this->cursorType, $tab);
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}
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else {
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$this->lastQuery = ifx_query($sql,$this->_connectionID, $this->cursorType);
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}
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}
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else {
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if ($inputarr) {
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$this->lastQuery = ifx_query($sql,$this->_connectionID, $tab);
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}
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else {
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$this->lastQuery = ifx_query($sql,$this->_connectionID);
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}
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}
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// Following line have been commented because autocommit mode is
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// not supported by informix SE 7.2
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//if ($this->_autocommit) ifx_query('COMMIT',$this->_connectionID);
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return $this->lastQuery;
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}
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// returns true or false
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function _close()
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{
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$this->lastQuery = false;
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return ifx_close($this->_connectionID);
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}
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}
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/*--------------------------------------------------------------------------------------
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Class Name: Recordset
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--------------------------------------------------------------------------------------*/
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class ADORecordset_informix72 extends ADORecordSet {
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var $databaseType = "informix72";
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var $canSeek = true;
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var $_fieldprops = false;
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function ADORecordset_informix72($id,$mode=false)
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{
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if ($mode === false) {
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global $ADODB_FETCH_MODE;
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$mode = $ADODB_FETCH_MODE;
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}
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$this->fetchMode = $mode;
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return $this->ADORecordSet($id);
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}
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/* Returns: an object containing field information.
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Get column information in the Recordset object. fetchField() can be used in order to obtain information about
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fields in a certain query result. If the field offset isn't specified, the next field that wasn't yet retrieved by
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fetchField() is retrieved. */
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function &FetchField($fieldOffset = -1)
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{
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if (empty($this->_fieldprops)) {
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$fp = ifx_fieldproperties($this->_queryID);
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foreach($fp as $k => $v) {
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$o = new ADOFieldObject;
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$o->name = $k;
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$arr = split(';',$v); //"SQLTYPE;length;precision;scale;ISNULLABLE"
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$o->type = $arr[0];
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$o->max_length = $arr[1];
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$this->_fieldprops[] = $o;
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$o->not_null = $arr[4]=="N";
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}
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}
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return $this->_fieldprops[$fieldOffset];
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}
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function _initrs()
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{
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$this->_numOfRows = -1; // ifx_affected_rows not reliable, only returns estimate -- ($ADODB_COUNTRECS)? ifx_affected_rows($this->_queryID):-1;
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$this->_numOfFields = ifx_num_fields($this->_queryID);
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}
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function _seek($row)
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{
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return @ifx_fetch_row($this->_queryID, $row);
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}
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function MoveLast()
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{
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$this->fields = @ifx_fetch_row($this->_queryID, "LAST");
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if ($this->fields) $this->EOF = false;
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$this->_currentRow = -1;
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if ($this->fetchMode == ADODB_FETCH_NUM) {
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foreach($this->fields as $v) {
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$arr[] = $v;
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}
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$this->fields = $arr;
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}
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return true;
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}
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function MoveFirst()
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{
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$this->fields = @ifx_fetch_row($this->_queryID, "FIRST");
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if ($this->fields) $this->EOF = false;
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$this->_currentRow = 0;
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if ($this->fetchMode == ADODB_FETCH_NUM) {
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foreach($this->fields as $v) {
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$arr[] = $v;
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}
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$this->fields = $arr;
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}
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return true;
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}
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function _fetch($ignore_fields=false)
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{
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$this->fields = @ifx_fetch_row($this->_queryID);
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if (!is_array($this->fields)) return false;
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if ($this->fetchMode == ADODB_FETCH_NUM) {
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foreach($this->fields as $v) {
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$arr[] = $v;
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}
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$this->fields = $arr;
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}
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return true;
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}
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/* close() only needs to be called if you are worried about using too much memory while your script
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is running. All associated result memory for the specified result identifier will automatically be freed. */
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function _close()
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{
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return ifx_free_result($this->_queryID);
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}
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}
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?>
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