egroupware/phpgwapi/inc/adodb/adodb-lib.inc.php

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2003-10-19 21:05:23 +02:00
<?php
global $ADODB_INCLUDED_LIB;
$ADODB_INCLUDED_LIB = 1;
/*
V4.20 22 Feb 2004 (c) 2000-2004 John Lim (jlim@natsoft.com.my). All rights reserved.
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Released under both BSD license and Lesser GPL library license.
Whenever there is any discrepancy between the two licenses,
the BSD license will take precedence. See License.txt.
Set tabs to 4 for best viewing.
Less commonly used functions are placed here to reduce size of adodb.inc.php.
*/
// Force key to upper.
// See also http://www.php.net/manual/en/function.array-change-key-case.php
function _array_change_key_case($an_array)
{
if (is_array($an_array)) {
foreach($an_array as $key=>$value)
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$new_array[strtoupper($key)] = $value;
return $new_array;
}
return $an_array;
}
function _adodb_replace(&$zthis, $table, $fieldArray, $keyCol, $autoQuote, $has_autoinc)
{
if (count($fieldArray) == 0) return 0;
$first = true;
$uSet = '';
if (!is_array($keyCol)) {
$keyCol = array($keyCol);
}
foreach($fieldArray as $k => $v) {
if ($autoQuote && !is_numeric($v) and strncmp($v,"'",1) !== 0 and strcasecmp($v,'null')!=0) {
$v = $zthis->qstr($v);
$fieldArray[$k] = $v;
}
if (in_array($k,$keyCol)) continue; // skip UPDATE if is key
if ($first) {
$first = false;
$uSet = "$k=$v";
} else
$uSet .= ",$k=$v";
}
$where = false;
foreach ($keyCol as $v) {
if ($where) $where .= " and $v=$fieldArray[$v]";
else $where = "$v=$fieldArray[$v]";
}
if ($uSet && $where) {
$update = "UPDATE $table SET $uSet WHERE $where";
$rs = $zthis->Execute($update);
if ($rs) {
if ($zthis->poorAffectedRows) {
/*
The Select count(*) wipes out any errors that the update would have returned.
http://phplens.com/lens/lensforum/msgs.php?id=5696
*/
if ($zthis->ErrorNo()<>0) return 0;
# affected_rows == 0 if update field values identical to old values
# for mysql - which is silly.
$cnt = $zthis->GetOne("select count(*) from $table where $where");
if ($cnt > 0) return 1; // record already exists
} else
if (($zthis->Affected_Rows()>0)) return 1;
}
}
// print "<p>Error=".$this->ErrorNo().'<p>';
$first = true;
foreach($fieldArray as $k => $v) {
if ($has_autoinc && in_array($k,$keyCol)) continue; // skip autoinc col
if ($first) {
$first = false;
$iCols = "$k";
$iVals = "$v";
} else {
$iCols .= ",$k";
$iVals .= ",$v";
}
}
$insert = "INSERT INTO $table ($iCols) VALUES ($iVals)";
$rs = $zthis->Execute($insert);
return ($rs) ? 2 : 0;
}
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// Requires $ADODB_FETCH_MODE = ADODB_FETCH_NUM
function _adodb_getmenu(&$zthis, $name,$defstr='',$blank1stItem=true,$multiple=false,
$size=0, $selectAttr='',$compareFields0=true)
{
$hasvalue = false;
if ($multiple or is_array($defstr)) {
if ($size==0) $size=5;
$attr = " multiple size=$size";
if (!strpos($name,'[]')) $name .= '[]';
} else if ($size) $attr = " size=$size";
else $attr ='';
$s = "<select name=\"$name\"$attr $selectAttr>";
if ($blank1stItem)
if (is_string($blank1stItem)) {
$barr = explode(':',$blank1stItem);
if (sizeof($barr) == 1) $barr[] = '';
$s .= "\n<option value=\"".$barr[0]."\">".$barr[1]."</option>";
} else $s .= "\n<option></option>";
if ($zthis->FieldCount() > 1) $hasvalue=true;
else $compareFields0 = true;
$value = '';
while(!$zthis->EOF) {
$zval = trim(reset($zthis->fields));
if (sizeof($zthis->fields) > 1) {
if (isset($zthis->fields[1]))
$zval2 = trim($zthis->fields[1]);
else
$zval2 = trim(next($zthis->fields));
}
$selected = ($compareFields0) ? $zval : $zval2;
if ($blank1stItem && $zval=="") {
$zthis->MoveNext();
continue;
}
if ($hasvalue)
$value = ' value="'.htmlspecialchars($zval2).'"';
if (is_array($defstr)) {
if (in_array($selected,$defstr))
$s .= "<option selected$value>".htmlspecialchars($zval).'</option>';
else
$s .= "\n<option".$value.'>'.htmlspecialchars($zval).'</option>';
}
else {
if (strcasecmp($selected,$defstr)==0)
$s .= "<option selected$value>".htmlspecialchars($zval).'</option>';
else
$s .= "\n<option".$value.'>'.htmlspecialchars($zval).'</option>';
}
$zthis->MoveNext();
} // while
return $s ."\n</select>\n";
}
/*
Count the number of records this sql statement will return by using
query rewriting techniques...
Does not work with UNIONs.
*/
function _adodb_getcount(&$zthis, $sql,$inputarr=false,$secs2cache=0)
{
$qryRecs = 0;
if (preg_match("/^\s*SELECT\s+DISTINCT/is", $sql) || preg_match('/\s+GROUP\s+BY\s+/is',$sql)) {
// ok, has SELECT DISTINCT or GROUP BY so see if we can use a table alias
// but this is only supported by oracle and postgresql...
if ($zthis->dataProvider == 'oci8') {
$rewritesql = preg_replace('/(\sORDER\s+BY\s.*)/is','',$sql);
$rewritesql = "SELECT COUNT(*) FROM ($rewritesql)";
} else if ( $zthis->databaseType == 'postgres' || $zthis->databaseType == 'postgres7') {
$info = $zthis->ServerInfo();
if (substr($info['version'],0,3) >= 7.1) { // good till version 999
$rewritesql = preg_replace('/(\sORDER\s+BY\s.*)/is','',$sql);
$rewritesql = "SELECT COUNT(*) FROM ($rewritesql) _ADODB_ALIAS_";
}
}
} else {
// now replace SELECT ... FROM with SELECT COUNT(*) FROM
$rewritesql = preg_replace(
'/^\s*SELECT\s.*\s+FROM\s/Uis','SELECT COUNT(*) FROM ',$sql);
// fix by alexander zhukov, alex#unipack.ru, because count(*) and 'order by' fails
// with mssql, access and postgresql. Also a good speedup optimization - skips sorting!
$rewritesql = preg_replace('/(\sORDER\s+BY\s.*)/is','',$rewritesql);
}
if (isset($rewritesql) && $rewritesql != $sql) {
if ($secs2cache) {
// we only use half the time of secs2cache because the count can quickly
// become inaccurate if new records are added
$qryRecs = $zthis->CacheGetOne($secs2cache/2,$rewritesql,$inputarr);
} else {
$qryRecs = $zthis->GetOne($rewritesql,$inputarr);
}
if ($qryRecs !== false) return $qryRecs;
}
//--------------------------------------------
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// query rewrite failed - so try slower way...
// strip off unneeded ORDER BY
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$rewritesql = preg_replace('/(\sORDER\s+BY\s.*)/is','',$sql);
$rstest = &$zthis->Execute($rewritesql,$inputarr);
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if ($rstest) {
$qryRecs = $rstest->RecordCount();
if ($qryRecs == -1) {
global $ADODB_EXTENSION;
// some databases will return -1 on MoveLast() - change to MoveNext()
if ($ADODB_EXTENSION) {
while(!$rstest->EOF) {
adodb_movenext($rstest);
}
} else {
while(!$rstest->EOF) {
$rstest->MoveNext();
}
}
$qryRecs = $rstest->_currentRow;
}
$rstest->Close();
if ($qryRecs == -1) return 0;
}
return $qryRecs;
}
/*
Code originally from "Cornel G" <conyg@fx.ro>
This code will not work with SQL that has UNION in it
Also if you are using CachePageExecute(), there is a strong possibility that
data will get out of synch. use CachePageExecute() only with tables that
rarely change.
*/
function &_adodb_pageexecute_all_rows(&$zthis, $sql, $nrows, $page,
$inputarr=false, $secs2cache=0)
{
$atfirstpage = false;
$atlastpage = false;
$lastpageno=1;
// If an invalid nrows is supplied,
// we assume a default value of 10 rows per page
if (!isset($nrows) || $nrows <= 0) $nrows = 10;
$qryRecs = false; //count records for no offset
$qryRecs = _adodb_getcount($zthis,$sql,$inputarr,$secs2cache);
$lastpageno = (int) ceil($qryRecs / $nrows);
$zthis->_maxRecordCount = $qryRecs;
// If page number <= 1, then we are at the first page
if (!isset($page) || $page <= 1) {
$page = 1;
$atfirstpage = true;
}
// ***** Here we check whether $page is the last page or
// whether we are trying to retrieve
// a page number greater than the last page number.
if ($page >= $lastpageno) {
$page = $lastpageno;
$atlastpage = true;
}
// We get the data we want
$offset = $nrows * ($page-1);
if ($secs2cache > 0)
$rsreturn = &$zthis->CacheSelectLimit($secs2cache, $sql, $nrows, $offset, $inputarr);
else
$rsreturn = &$zthis->SelectLimit($sql, $nrows, $offset, $inputarr, $secs2cache);
// Before returning the RecordSet, we set the pagination properties we need
if ($rsreturn) {
$rsreturn->_maxRecordCount = $qryRecs;
$rsreturn->rowsPerPage = $nrows;
$rsreturn->AbsolutePage($page);
$rsreturn->AtFirstPage($atfirstpage);
$rsreturn->AtLastPage($atlastpage);
$rsreturn->LastPageNo($lastpageno);
}
return $rsreturn;
}
// Iv<49>n Oliva version
function &_adodb_pageexecute_no_last_page(&$zthis, $sql, $nrows, $page, $inputarr=false, $secs2cache=0)
{
$atfirstpage = false;
$atlastpage = false;
if (!isset($page) || $page <= 1) { // If page number <= 1, then we are at the first page
$page = 1;
$atfirstpage = true;
}
if ($nrows <= 0) $nrows = 10; // If an invalid nrows is supplied, we assume a default value of 10 rows per page
// ***** Here we check whether $page is the last page or whether we are trying to retrieve a page number greater than
// the last page number.
$pagecounter = $page + 1;
$pagecounteroffset = ($pagecounter * $nrows) - $nrows;
if ($secs2cache>0) $rstest = &$zthis->CacheSelectLimit($secs2cache, $sql, $nrows, $pagecounteroffset, $inputarr);
else $rstest = &$zthis->SelectLimit($sql, $nrows, $pagecounteroffset, $inputarr, $secs2cache);
if ($rstest) {
while ($rstest && $rstest->EOF && $pagecounter>0) {
$atlastpage = true;
$pagecounter--;
$pagecounteroffset = $nrows * ($pagecounter - 1);
$rstest->Close();
if ($secs2cache>0) $rstest = &$zthis->CacheSelectLimit($secs2cache, $sql, $nrows, $pagecounteroffset, $inputarr);
else $rstest = &$zthis->SelectLimit($sql, $nrows, $pagecounteroffset, $inputarr, $secs2cache);
}
if ($rstest) $rstest->Close();
}
if ($atlastpage) { // If we are at the last page or beyond it, we are going to retrieve it
$page = $pagecounter;
if ($page == 1) $atfirstpage = true; // We have to do this again in case the last page is the same as the first
//... page, that is, the recordset has only 1 page.
}
// We get the data we want
$offset = $nrows * ($page-1);
if ($secs2cache > 0) $rsreturn = &$zthis->CacheSelectLimit($secs2cache, $sql, $nrows, $offset, $inputarr);
else $rsreturn = &$zthis->SelectLimit($sql, $nrows, $offset, $inputarr, $secs2cache);
// Before returning the RecordSet, we set the pagination properties we need
if ($rsreturn) {
$rsreturn->rowsPerPage = $nrows;
$rsreturn->AbsolutePage($page);
$rsreturn->AtFirstPage($atfirstpage);
$rsreturn->AtLastPage($atlastpage);
}
return $rsreturn;
}
function _adodb_getupdatesql(&$zthis,&$rs, $arrFields,$forceUpdate=false,$magicq=false)
{
if (!$rs) {
printf(ADODB_BAD_RS,'GetUpdateSQL');
return false;
}
$fieldUpdatedCount = 0;
$arrFields = _array_change_key_case($arrFields);
$hasnumeric = isset($rs->fields[0]);
$updateSQL = '';
// Loop through all of the fields in the recordset
for ($i=0, $max=$rs->FieldCount(); $i < $max; $i++) {
// Get the field from the recordset
$field = $rs->FetchField($i);
// If the recordset field is one
// of the fields passed in then process.
$upperfname = strtoupper($field->name);
if (adodb_key_exists($upperfname,$arrFields)) {
// If the existing field value in the recordset
// is different from the value passed in then
// go ahead and append the field name and new value to
// the update query.
if ($hasnumeric) $val = $rs->fields[$i];
else if (isset($rs->fields[$upperfname])) $val = $rs->fields[$upperfname];
else if (isset($rs->fields[$field->name])) $val = $rs->fields[$field->name];
else if (isset($rs->fields[strtolower($upperfname)])) $val = $rs->fields[strtolower($upperfname)];
else $val = '';
if ($forceUpdate || strcmp($val, $arrFields[$upperfname])) {
// Set the counter for the number of fields that will be updated.
$fieldUpdatedCount++;
// Based on the datatype of the field
// Format the value properly for the database
$mt = $rs->MetaType($field->type);
// "mike" <mike@partner2partner.com> patch and "Ryan Bailey" <rebel@windriders.com>
//PostgreSQL uses a 't' or 'f' and therefore needs to be processed as a string ('C') type field.
if ((strncmp($zthis->databaseType,"postgres",8) === 0) && ($mt == "L")) $mt = "C";
// is_null requires php 4.0.4
if ((defined('ADODB_FORCE_NULLS') && is_null($arrFields[$upperfname])) || $arrFields[$upperfname] === 'null')
$updateSQL .= $field->name . " = null, ";
else
switch($mt) {
case 'null':
case "C":
case "X":
case 'B':
$updateSQL .= $field->name . " = " . $zthis->qstr($arrFields[$upperfname],$magicq) . ", ";
break;
case "D":
$updateSQL .= $field->name . " = " . $zthis->DBDate($arrFields[$upperfname]) . ", ";
break;
case "T":
$updateSQL .= $field->name . " = " . $zthis->DBTimeStamp($arrFields[$upperfname]) . ", ";
break;
default:
$val = $arrFields[$upperfname];
/*if (!is_numeric($val)) {
if (strncmp($val,'=',1) == 0) $val = substr($val,1);
else $val = (float) $val;
}*/
if (empty($val)) $val = '0';
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$updateSQL .= $field->name . " = " . $val . ", ";
break;
};
};
};
};
// If there were any modified fields then build the rest of the update query.
if ($fieldUpdatedCount > 0 || $forceUpdate) {
// Get the table name from the existing query.
preg_match("/FROM\s+".ADODB_TABLE_REGEX."/is", $rs->sql, $tableName);
// Get the full where clause excluding the word "WHERE" from
// the existing query.
preg_match('/\sWHERE\s(.*)/is', $rs->sql, $whereClause);
$discard = false;
// not a good hack, improvements?
if ($whereClause)
preg_match('/\s(LIMIT\s.*)/is', $whereClause[1], $discard);
else
$whereClause = array(false,false);
if ($discard)
$whereClause[1] = substr($whereClause[1], 0, strlen($whereClause[1]) - strlen($discard[1]));
// updateSQL will contain the full update query when all
// processing has completed.
$updateSQL = "UPDATE " . $tableName[1] . " SET ".substr($updateSQL, 0, -2);
// If the recordset has a where clause then use that same where clause
// for the update.
if ($whereClause[1]) $updateSQL .= " WHERE " . $whereClause[1];
return $updateSQL;
} else {
return false;
};
}
function adodb_key_exists($key, &$arr)
{
if (!defined('ADODB_FORCE_NULLS')) {
// the following is the old behaviour where null or empty fields are ignored
return (!empty($arr[$key])) || (isset($arr[$key]) && strlen($arr[$key])>0);
}
if (isset($arr[$key])) return true;
## null check below
if (ADODB_PHPVER >= 0x4010) return array_key_exists($key,$arr);
return false;
}
function _adodb_getinsertsql(&$zthis,&$rs,$arrFields,$magicq=false)
{
$values = '';
$fields = '';
$arrFields = _array_change_key_case($arrFields);
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if (!$rs) {
printf(ADODB_BAD_RS,'GetInsertSQL');
return false;
}
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$fieldInsertedCount = 0;
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// Loop through all of the fields in the recordset
for ($i=0, $max=$rs->FieldCount(); $i < $max; $i++) {
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// Get the field from the recordset
$field = $rs->FetchField($i);
// If the recordset field is one
// of the fields passed in then process.
$upperfname = strtoupper($field->name);
if (adodb_key_exists($upperfname,$arrFields)) {
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// Set the counter for the number of fields that will be inserted.
$fieldInsertedCount++;
// Get the name of the fields to insert
$fields .= $field->name . ", ";
$mt = $rs->MetaType($field->type);
// "mike" <mike@partner2partner.com> patch and "Ryan Bailey" <rebel@windriders.com>
//PostgreSQL uses a 't' or 'f' and therefore needs to be processed as a string ('C') type field.
if ((strncmp($zthis->databaseType,"postgres",8) === 0) && ($mt == "L")) $mt = "C";
// Based on the datatype of the field
// Format the value properly for the database
if ((defined('ADODB_FORCE_NULLS') && is_null($arrFields[$upperfname])) || $arrFields[$upperfname] === 'null')
$values .= "null, ";
else
switch($mt) {
case "C":
case "X":
case 'B':
$values .= $zthis->qstr($arrFields[$upperfname],$magicq) . ", ";
break;
case "D":
$values .= $zthis->DBDate($arrFields[$upperfname]) . ", ";
break;
case "T":
$values .= $zthis->DBTimeStamp($arrFields[$upperfname]) . ", ";
break;
default:
$val = $arrFields[$upperfname];
/*if (!is_numeric($val)) {
if (strncmp($val,'=',1) == 0) $val = substr($val,1);
else $val = (float) $val;
}*/
if (empty($val)) $val = '0';
$values .= $val . ", ";
break;
};
};
};
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// If there were any inserted fields then build the rest of the insert query.
if ($fieldInsertedCount <= 0) return false;
// Get the table name from the existing query.
preg_match("/FROM\s+".ADODB_TABLE_REGEX."/is", $rs->sql, $tableName);
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// Strip off the comma and space on the end of both the fields
// and their values.
$fields = substr($fields, 0, -2);
$values = substr($values, 0, -2);
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// Append the fields and their values to the insert query.
$insertSQL = "INSERT INTO " . $tableName[1] . " ( $fields ) VALUES ( $values )";
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return $insertSQL;
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}
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?>