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738 lines
20 KiB
738 lines
20 KiB
<?php
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/*
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V4.55 3 Jan 2005 (c) 2000-2005 John Lim (jlim#natsoft.com.my). 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://adodb.sourceforge.net
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Requires ODBC. Works on Windows and Unix.
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*/
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// security - hide paths
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if (!defined('ADODB_DIR')) die();
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define("_ADODB_ODBC_LAYER", 2 );
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/*--------------------------------------------------------------------------------------
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--------------------------------------------------------------------------------------*/
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class ADODB_odbc extends ADOConnection {
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var $databaseType = "odbc";
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var $fmtDate = "'Y-m-d'";
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var $fmtTimeStamp = "'Y-m-d, h:i:sA'";
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var $replaceQuote = "''"; // string to use to replace quotes
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var $dataProvider = "odbc";
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var $hasAffectedRows = true;
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var $binmode = ODBC_BINMODE_RETURN;
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var $useFetchArray = false; // setting this to true will make array elements in FETCH_ASSOC mode case-sensitive
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// breaking backward-compat
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//var $longreadlen = 8000; // default number of chars to return for a Blob/Long field
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var $_bindInputArray = false;
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var $curmode = SQL_CUR_USE_DRIVER; // See sqlext.h, SQL_CUR_DEFAULT == SQL_CUR_USE_DRIVER == 2L
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var $_genSeqSQL = "create table %s (id integer)";
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var $_autocommit = true;
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var $_haserrorfunctions = true;
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var $_has_stupid_odbc_fetch_api_change = true;
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var $_lastAffectedRows = 0;
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var $uCaseTables = true; // for meta* functions, uppercase table names
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function ADODB_odbc()
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{
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$this->_haserrorfunctions = ADODB_PHPVER >= 0x4050;
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$this->_has_stupid_odbc_fetch_api_change = ADODB_PHPVER >= 0x4200;
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}
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// returns true or false
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function _connect($argDSN, $argUsername, $argPassword, $argDatabasename)
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{
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global $php_errormsg;
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if (!function_exists('odbc_connect')) return null;
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if ($this->debug && $argDatabasename && $this->databaseType != 'vfp') {
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ADOConnection::outp("For odbc Connect(), $argDatabasename is not used. Place dsn in 1st parameter.");
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}
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if (isset($php_errormsg)) $php_errormsg = '';
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if ($this->curmode === false) $this->_connectionID = odbc_connect($argDSN,$argUsername,$argPassword);
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else $this->_connectionID = odbc_connect($argDSN,$argUsername,$argPassword,$this->curmode);
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$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
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if (isset($this->connectStmt)) $this->Execute($this->connectStmt);
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return $this->_connectionID != false;
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}
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// returns true or false
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function _pconnect($argDSN, $argUsername, $argPassword, $argDatabasename)
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{
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global $php_errormsg;
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if (!function_exists('odbc_connect')) return null;
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if (isset($php_errormsg)) $php_errormsg = '';
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$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
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if ($this->debug && $argDatabasename) {
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ADOConnection::outp("For odbc PConnect(), $argDatabasename is not used. Place dsn in 1st parameter.");
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}
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// print "dsn=$argDSN u=$argUsername p=$argPassword<br>"; flush();
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if ($this->curmode === false) $this->_connectionID = odbc_connect($argDSN,$argUsername,$argPassword);
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else $this->_connectionID = odbc_pconnect($argDSN,$argUsername,$argPassword,$this->curmode);
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$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
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if ($this->_connectionID && $this->autoRollback) @odbc_rollback($this->_connectionID);
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if (isset($this->connectStmt)) $this->Execute($this->connectStmt);
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return $this->_connectionID != false;
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}
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function ServerInfo()
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{
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if (!empty($this->host) && ADODB_PHPVER >= 0x4300) {
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$dsn = strtoupper($this->host);
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$first = true;
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$found = false;
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if (!function_exists('odbc_data_source')) return false;
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while(true) {
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$rez = @odbc_data_source($this->_connectionID,
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$first ? SQL_FETCH_FIRST : SQL_FETCH_NEXT);
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$first = false;
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if (!is_array($rez)) break;
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if (strtoupper($rez['server']) == $dsn) {
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$found = true;
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break;
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}
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}
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if (!$found) return ADOConnection::ServerInfo();
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if (!isset($rez['version'])) $rez['version'] = '';
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return $rez;
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} else {
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return ADOConnection::ServerInfo();
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}
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}
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function CreateSequence($seqname='adodbseq',$start=1)
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{
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if (empty($this->_genSeqSQL)) return false;
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$ok = $this->Execute(sprintf($this->_genSeqSQL,$seqname));
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if (!$ok) return false;
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$start -= 1;
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return $this->Execute("insert into $seqname values($start)");
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}
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var $_dropSeqSQL = 'drop table %s';
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function DropSequence($seqname)
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{
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if (empty($this->_dropSeqSQL)) return false;
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return $this->Execute(sprintf($this->_dropSeqSQL,$seqname));
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}
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/*
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This algorithm is not very efficient, but works even if table locking
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is not available.
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Will return false if unable to generate an ID after $MAXLOOPS attempts.
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*/
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function GenID($seq='adodbseq',$start=1)
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{
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// if you have to modify the parameter below, your database is overloaded,
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// or you need to implement generation of id's yourself!
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$MAXLOOPS = 100;
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//$this->debug=1;
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while (--$MAXLOOPS>=0) {
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$num = $this->GetOne("select id from $seq");
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if ($num === false) {
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$this->Execute(sprintf($this->_genSeqSQL ,$seq));
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$start -= 1;
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$num = '0';
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$ok = $this->Execute("insert into $seq values($start)");
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if (!$ok) return false;
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}
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$this->Execute("update $seq set id=id+1 where id=$num");
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if ($this->affected_rows() > 0) {
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$num += 1;
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$this->genID = $num;
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return $num;
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}
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}
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if ($fn = $this->raiseErrorFn) {
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$fn($this->databaseType,'GENID',-32000,"Unable to generate unique id after $MAXLOOPS attempts",$seq,$num);
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}
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return false;
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}
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function ErrorMsg()
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{
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if ($this->_haserrorfunctions) {
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if ($this->_errorMsg !== false) return $this->_errorMsg;
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if (empty($this->_connectionID)) return @odbc_errormsg();
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return @odbc_errormsg($this->_connectionID);
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} else return ADOConnection::ErrorMsg();
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}
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function ErrorNo()
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{
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if ($this->_haserrorfunctions) {
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if ($this->_errorCode !== false) {
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// bug in 4.0.6, error number can be corrupted string (should be 6 digits)
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return (strlen($this->_errorCode)<=2) ? 0 : $this->_errorCode;
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}
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if (empty($this->_connectionID)) $e = @odbc_error();
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else $e = @odbc_error($this->_connectionID);
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// bug in 4.0.6, error number can be corrupted string (should be 6 digits)
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// so we check and patch
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if (strlen($e)<=2) return 0;
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return $e;
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} else return ADOConnection::ErrorNo();
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}
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function BeginTrans()
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{
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if (!$this->hasTransactions) return false;
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if ($this->transOff) return true;
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$this->transCnt += 1;
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$this->_autocommit = false;
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return odbc_autocommit($this->_connectionID,false);
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}
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function CommitTrans($ok=true)
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{
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if ($this->transOff) return true;
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if (!$ok) return $this->RollbackTrans();
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if ($this->transCnt) $this->transCnt -= 1;
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$this->_autocommit = true;
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$ret = odbc_commit($this->_connectionID);
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odbc_autocommit($this->_connectionID,true);
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return $ret;
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}
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function RollbackTrans()
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{
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if ($this->transOff) return true;
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if ($this->transCnt) $this->transCnt -= 1;
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$this->_autocommit = true;
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$ret = odbc_rollback($this->_connectionID);
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odbc_autocommit($this->_connectionID,true);
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return $ret;
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}
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function MetaPrimaryKeys($table)
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{
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global $ADODB_FETCH_MODE;
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if ($this->uCaseTables) $table = strtoupper($table);
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$schema = '';
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$this->_findschema($table,$schema);
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$savem = $ADODB_FETCH_MODE;
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$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
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$qid = @odbc_primarykeys($this->_connectionID,'',$schema,$table);
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if (!$qid) {
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$ADODB_FETCH_MODE = $savem;
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return false;
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}
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$rs = new ADORecordSet_odbc($qid);
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$ADODB_FETCH_MODE = $savem;
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if (!$rs) return false;
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$rs->_has_stupid_odbc_fetch_api_change = $this->_has_stupid_odbc_fetch_api_change;
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$arr =& $rs->GetArray();
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$rs->Close();
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//print_r($arr);
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$arr2 = array();
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for ($i=0; $i < sizeof($arr); $i++) {
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if ($arr[$i][3]) $arr2[] = $arr[$i][3];
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}
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return $arr2;
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}
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function &MetaTables($ttype=false)
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{
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global $ADODB_FETCH_MODE;
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$savem = $ADODB_FETCH_MODE;
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$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
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$qid = odbc_tables($this->_connectionID);
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$rs = new ADORecordSet_odbc($qid);
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$ADODB_FETCH_MODE = $savem;
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if (!$rs) {
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$false = false;
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return $false;
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}
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$rs->_has_stupid_odbc_fetch_api_change = $this->_has_stupid_odbc_fetch_api_change;
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$arr =& $rs->GetArray();
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//print_r($arr);
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$rs->Close();
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$arr2 = array();
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if ($ttype) {
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$isview = strncmp($ttype,'V',1) === 0;
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}
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for ($i=0; $i < sizeof($arr); $i++) {
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if (!$arr[$i][2]) continue;
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$type = $arr[$i][3];
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if ($ttype) {
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if ($isview) {
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if (strncmp($type,'V',1) === 0) $arr2[] = $arr[$i][2];
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} else if (strncmp($type,'SYS',3) !== 0) $arr2[] = $arr[$i][2];
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} else if (strncmp($type,'SYS',3) !== 0) $arr2[] = $arr[$i][2];
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}
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return $arr2;
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}
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/*
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See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/odbc/htm/odbcdatetime_data_type_changes.asp
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/ SQL data type codes /
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#define SQL_UNKNOWN_TYPE 0
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#define SQL_CHAR 1
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#define SQL_NUMERIC 2
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#define SQL_DECIMAL 3
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#define SQL_INTEGER 4
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#define SQL_SMALLINT 5
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#define SQL_FLOAT 6
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#define SQL_REAL 7
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#define SQL_DOUBLE 8
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#if (ODBCVER >= 0x0300)
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#define SQL_DATETIME 9
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#endif
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#define SQL_VARCHAR 12
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/ One-parameter shortcuts for date/time data types /
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#if (ODBCVER >= 0x0300)
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#define SQL_TYPE_DATE 91
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#define SQL_TYPE_TIME 92
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#define SQL_TYPE_TIMESTAMP 93
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#define SQL_UNICODE (-95)
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#define SQL_UNICODE_VARCHAR (-96)
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#define SQL_UNICODE_LONGVARCHAR (-97)
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*/
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function ODBCTypes($t)
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{
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switch ((integer)$t) {
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case 1:
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case 12:
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case 0:
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case -95:
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case -96:
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return 'C';
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case -97:
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case -1: //text
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return 'X';
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case -4: //image
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return 'B';
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case 9:
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case 91:
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return 'D';
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case 10:
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case 11:
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case 92:
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case 93:
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return 'T';
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case 4:
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case 5:
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case -6:
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return 'I';
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case -11: // uniqidentifier
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return 'R';
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case -7: //bit
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return 'L';
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default:
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return 'N';
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}
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}
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function &MetaColumns($table)
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{
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global $ADODB_FETCH_MODE;
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$false = false;
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if ($this->uCaseTables) $table = strtoupper($table);
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$schema = '';
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$this->_findschema($table,$schema);
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$savem = $ADODB_FETCH_MODE;
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$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
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/*if (false) { // after testing, confirmed that the following does not work becoz of a bug
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$qid2 = odbc_tables($this->_connectionID);
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$rs = new ADORecordSet_odbc($qid2);
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$ADODB_FETCH_MODE = $savem;
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if (!$rs) return false;
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$rs->_has_stupid_odbc_fetch_api_change = $this->_has_stupid_odbc_fetch_api_change;
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$rs->_fetch();
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while (!$rs->EOF) {
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if ($table == strtoupper($rs->fields[2])) {
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$q = $rs->fields[0];
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$o = $rs->fields[1];
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break;
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}
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$rs->MoveNext();
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}
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$rs->Close();
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$qid = odbc_columns($this->_connectionID,$q,$o,strtoupper($table),'%');
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} */
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switch ($this->databaseType) {
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case 'access':
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case 'vfp':
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$qid = odbc_columns($this->_connectionID);#,'%','',strtoupper($table),'%');
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break;
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case 'db2':
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$colname = "%";
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$qid = odbc_columns($this->_connectionID, "", $schema, $table, $colname);
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break;
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default:
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$qid = @odbc_columns($this->_connectionID,'%','%',strtoupper($table),'%');
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if (empty($qid)) $qid = odbc_columns($this->_connectionID);
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break;
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}
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if (empty($qid)) return $false;
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$rs =& new ADORecordSet_odbc($qid);
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$ADODB_FETCH_MODE = $savem;
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if (!$rs) return $false;
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$rs->_has_stupid_odbc_fetch_api_change = $this->_has_stupid_odbc_fetch_api_change;
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$rs->_fetch();
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$retarr = array();
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/*
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$rs->fields indices
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0 TABLE_QUALIFIER
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1 TABLE_SCHEM
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2 TABLE_NAME
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3 COLUMN_NAME
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4 DATA_TYPE
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5 TYPE_NAME
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6 PRECISION
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7 LENGTH
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8 SCALE
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9 RADIX
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10 NULLABLE
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11 REMARKS
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*/
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while (!$rs->EOF) {
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// adodb_pr($rs->fields);
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if (strtoupper(trim($rs->fields[2])) == $table && (!$schema || strtoupper($rs->fields[1]) == $schema)) {
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$fld = new ADOFieldObject();
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$fld->name = $rs->fields[3];
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$fld->type = $this->ODBCTypes($rs->fields[4]);
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// ref: http://msdn.microsoft.com/library/default.asp?url=/archive/en-us/dnaraccgen/html/msdn_odk.asp
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// access uses precision to store length for char/varchar
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if ($fld->type == 'C' or $fld->type == 'X') {
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if ($this->databaseType == 'access')
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$fld->max_length = $rs->fields[6];
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else if ($rs->fields[4] <= -95) // UNICODE
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$fld->max_length = $rs->fields[7]/2;
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else
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$fld->max_length = $rs->fields[7];
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} else
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$fld->max_length = $rs->fields[7];
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|
$fld->not_null = !empty($rs->fields[10]);
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$fld->scale = $rs->fields[8];
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$retarr[strtoupper($fld->name)] = $fld;
|
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} else if (sizeof($retarr)>0)
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break;
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$rs->MoveNext();
|
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}
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$rs->Close(); //-- crashes 4.03pl1 -- why?
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|
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return empty($retarr) ? $false : $retarr;
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}
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|
|
function Prepare($sql)
|
|
{
|
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if (! $this->_bindInputArray) return $sql; // no binding
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|
$stmt = odbc_prepare($this->_connectionID,$sql);
|
|
if (!$stmt) {
|
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// we don't know whether odbc driver is parsing prepared stmts, so just return sql
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return $sql;
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}
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return array($sql,$stmt,false);
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}
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|
|
|
/* returns queryID or false */
|
|
function _query($sql,$inputarr=false)
|
|
{
|
|
GLOBAL $php_errormsg;
|
|
if (isset($php_errormsg)) $php_errormsg = '';
|
|
$this->_error = '';
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|
|
if ($inputarr) {
|
|
if (is_array($sql)) {
|
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$stmtid = $sql[1];
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} else {
|
|
$stmtid = odbc_prepare($this->_connectionID,$sql);
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|
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if ($stmtid == false) {
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$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
|
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return false;
|
|
}
|
|
}
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|
|
if (! odbc_execute($stmtid,$inputarr)) {
|
|
//@odbc_free_result($stmtid);
|
|
if ($this->_haserrorfunctions) {
|
|
$this->_errorMsg = odbc_errormsg();
|
|
$this->_errorCode = odbc_error();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
} else if (is_array($sql)) {
|
|
$stmtid = $sql[1];
|
|
if (!odbc_execute($stmtid)) {
|
|
//@odbc_free_result($stmtid);
|
|
if ($this->_haserrorfunctions) {
|
|
$this->_errorMsg = odbc_errormsg();
|
|
$this->_errorCode = odbc_error();
|
|
}
|
|
return false;
|
|
}
|
|
} else
|
|
$stmtid = odbc_exec($this->_connectionID,$sql);
|
|
|
|
$this->_lastAffectedRows = 0;
|
|
if ($stmtid) {
|
|
if (@odbc_num_fields($stmtid) == 0) {
|
|
$this->_lastAffectedRows = odbc_num_rows($stmtid);
|
|
$stmtid = true;
|
|
} else {
|
|
$this->_lastAffectedRows = 0;
|
|
odbc_binmode($stmtid,$this->binmode);
|
|
odbc_longreadlen($stmtid,$this->maxblobsize);
|
|
}
|
|
|
|
if ($this->_haserrorfunctions) {
|
|
$this->_errorMsg = '';
|
|
$this->_errorCode = 0;
|
|
} else
|
|
$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
|
|
} else {
|
|
if ($this->_haserrorfunctions) {
|
|
$this->_errorMsg = odbc_errormsg();
|
|
$this->_errorCode = odbc_error();
|
|
} else
|
|
$this->_errorMsg = isset($php_errormsg) ? $php_errormsg : '';
|
|
}
|
|
return $stmtid;
|
|
}
|
|
|
|
/*
|
|
Insert a null into the blob field of the table first.
|
|
Then use UpdateBlob to store the blob.
|
|
|
|
Usage:
|
|
|
|
$conn->Execute('INSERT INTO blobtable (id, blobcol) VALUES (1, null)');
|
|
$conn->UpdateBlob('blobtable','blobcol',$blob,'id=1');
|
|
*/
|
|
function UpdateBlob($table,$column,$val,$where,$blobtype='BLOB')
|
|
{
|
|
return $this->Execute("UPDATE $table SET $column=? WHERE $where",array($val)) != false;
|
|
}
|
|
|
|
// returns true or false
|
|
function _close()
|
|
{
|
|
$ret = @odbc_close($this->_connectionID);
|
|
$this->_connectionID = false;
|
|
return $ret;
|
|
}
|
|
|
|
function _affectedrows()
|
|
{
|
|
return $this->_lastAffectedRows;
|
|
}
|
|
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------------------
|
|
Class Name: Recordset
|
|
--------------------------------------------------------------------------------------*/
|
|
|
|
class ADORecordSet_odbc extends ADORecordSet {
|
|
|
|
var $bind = false;
|
|
var $databaseType = "odbc";
|
|
var $dataProvider = "odbc";
|
|
var $useFetchArray;
|
|
var $_has_stupid_odbc_fetch_api_change;
|
|
|
|
function ADORecordSet_odbc($id,$mode=false)
|
|
{
|
|
if ($mode === false) {
|
|
global $ADODB_FETCH_MODE;
|
|
$mode = $ADODB_FETCH_MODE;
|
|
}
|
|
$this->fetchMode = $mode;
|
|
|
|
$this->_queryID = $id;
|
|
|
|
// the following is required for mysql odbc driver in 4.3.1 -- why?
|
|
$this->EOF = false;
|
|
$this->_currentRow = -1;
|
|
//$this->ADORecordSet($id);
|
|
}
|
|
|
|
|
|
// returns the field object
|
|
function &FetchField($fieldOffset = -1)
|
|
{
|
|
|
|
$off=$fieldOffset+1; // offsets begin at 1
|
|
|
|
$o= new ADOFieldObject();
|
|
$o->name = @odbc_field_name($this->_queryID,$off);
|
|
$o->type = @odbc_field_type($this->_queryID,$off);
|
|
$o->max_length = @odbc_field_len($this->_queryID,$off);
|
|
if (ADODB_ASSOC_CASE == 0) $o->name = strtolower($o->name);
|
|
else if (ADODB_ASSOC_CASE == 1) $o->name = strtoupper($o->name);
|
|
return $o;
|
|
}
|
|
|
|
/* Use associative array to get fields array */
|
|
function Fields($colname)
|
|
{
|
|
if ($this->fetchMode & ADODB_FETCH_ASSOC) return $this->fields[$colname];
|
|
if (!$this->bind) {
|
|
$this->bind = array();
|
|
for ($i=0; $i < $this->_numOfFields; $i++) {
|
|
$o = $this->FetchField($i);
|
|
$this->bind[strtoupper($o->name)] = $i;
|
|
}
|
|
}
|
|
|
|
return $this->fields[$this->bind[strtoupper($colname)]];
|
|
}
|
|
|
|
|
|
function _initrs()
|
|
{
|
|
global $ADODB_COUNTRECS;
|
|
$this->_numOfRows = ($ADODB_COUNTRECS) ? @odbc_num_rows($this->_queryID) : -1;
|
|
$this->_numOfFields = @odbc_num_fields($this->_queryID);
|
|
// some silly drivers such as db2 as/400 and intersystems cache return _numOfRows = 0
|
|
if ($this->_numOfRows == 0) $this->_numOfRows = -1;
|
|
//$this->useFetchArray = $this->connection->useFetchArray;
|
|
$this->_has_stupid_odbc_fetch_api_change = ADODB_PHPVER >= 0x4200;
|
|
}
|
|
|
|
function _seek($row)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// speed up SelectLimit() by switching to ADODB_FETCH_NUM as ADODB_FETCH_ASSOC is emulated
|
|
function &GetArrayLimit($nrows,$offset=-1)
|
|
{
|
|
if ($offset <= 0) {
|
|
$rs =& $this->GetArray($nrows);
|
|
return $rs;
|
|
}
|
|
$savem = $this->fetchMode;
|
|
$this->fetchMode = ADODB_FETCH_NUM;
|
|
$this->Move($offset);
|
|
$this->fetchMode = $savem;
|
|
|
|
if ($this->fetchMode & ADODB_FETCH_ASSOC) {
|
|
$this->fields =& $this->GetRowAssoc(ADODB_ASSOC_CASE);
|
|
}
|
|
|
|
$results = array();
|
|
$cnt = 0;
|
|
while (!$this->EOF && $nrows != $cnt) {
|
|
$results[$cnt++] = $this->fields;
|
|
$this->MoveNext();
|
|
}
|
|
|
|
return $results;
|
|
}
|
|
|
|
|
|
function MoveNext()
|
|
{
|
|
if ($this->_numOfRows != 0 && !$this->EOF) {
|
|
$this->_currentRow++;
|
|
|
|
if ($this->_has_stupid_odbc_fetch_api_change)
|
|
$rez = @odbc_fetch_into($this->_queryID,$this->fields);
|
|
else {
|
|
$row = 0;
|
|
$rez = @odbc_fetch_into($this->_queryID,$row,$this->fields);
|
|
}
|
|
if ($rez) {
|
|
if ($this->fetchMode & ADODB_FETCH_ASSOC) {
|
|
$this->fields =& $this->GetRowAssoc(ADODB_ASSOC_CASE);
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
$this->fields = false;
|
|
$this->EOF = true;
|
|
return false;
|
|
}
|
|
|
|
function _fetch()
|
|
{
|
|
|
|
if ($this->_has_stupid_odbc_fetch_api_change)
|
|
$rez = @odbc_fetch_into($this->_queryID,$this->fields,$row);
|
|
else {
|
|
$row = 0;
|
|
$rez = @odbc_fetch_into($this->_queryID,$row,$this->fields);
|
|
}
|
|
if ($rez) {
|
|
if ($this->fetchMode & ADODB_FETCH_ASSOC) {
|
|
$this->fields =& $this->GetRowAssoc(ADODB_ASSOC_CASE);
|
|
}
|
|
return true;
|
|
}
|
|
$this->fields = false;
|
|
return false;
|
|
}
|
|
|
|
function _close()
|
|
{
|
|
return @odbc_free_result($this->_queryID);
|
|
}
|
|
|
|
}
|
|
|
|
?>
|