/lib/adodb/drivers/adodb-mysql.inc.php

<?php
/*
@version   v5.20.16  12-Jan-2020
@copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved.
@copyright (c) 2014      Damien Regad, Mark Newnham and the ADOdb community
  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.
  Set tabs to 8.

  This driver only supports the original non-transactional MySQL driver. It
  is deprected in PHP version 5.5 and removed in PHP version 7. It is deprecated
  as of ADOdb version 5.20.0. Use the mysqli driver instead, which supports both
  transactional and non-transactional updates
  
  Requires mysql client. Works on Windows and Unix.

 28 Feb 2001: MetaColumns bug fix - suggested by  Freek Dijkstra (phpeverywhere@macfreek.com)
*/

// security - hide paths
if (!defined('ADODB_DIR')) die();

if (! defined("_ADODB_MYSQL_LAYER")) {
	define("_ADODB_MYSQL_LAYER", 1 );

class ADODB_mysql extends ADOConnection {
	var $databaseType = 'mysql';
	var $dataProvider = 'mysql';
	var $hasInsertID = true;
	var $hasAffectedRows = true;
	var $metaTablesSQL = "SELECT
			TABLE_NAME,
			CASE WHEN TABLE_TYPE = 'VIEW' THEN 'V' ELSE 'T' END
		FROM INFORMATION_SCHEMA.TABLES
		WHERE TABLE_SCHEMA=";
	var $metaColumnsSQL = "SHOW COLUMNS FROM `%s`";
	var $fmtTimeStamp = "'Y-m-d H:i:s'";
	var $hasLimit = true;
	var $hasMoveFirst = true;
	var $hasGenID = true;
	var $isoDates = true; // accepts dates in ISO format
	var $sysDate = 'CURDATE()';
	var $sysTimeStamp = 'NOW()';
	var $hasTransactions = false;
	var $forceNewConnect = false;
	var $poorAffectedRows = true;
	var $clientFlags = 0;
	var $charSet = '';
	var $substr = "substring";
	var $nameQuote = '`';		/// string to use to quote identifiers and names
	var $compat323 = false; 		// true if compat with mysql 3.23

	function __construct()
	{
		if (defined('ADODB_EXTENSION')) $this->rsPrefix .= 'ext_';
	}


	// SetCharSet - switch the client encoding
	function SetCharSet($charset_name)
	{
		if (!function_exists('mysql_set_charset')) {
			return false;
		}

		if ($this->charSet !== $charset_name) {
			$ok = @mysql_set_charset($charset_name,$this->_connectionID);
			if ($ok) {
				$this->charSet = $charset_name;
				return true;
			}
			return false;
		}
		return true;
	}

	function ServerInfo()
	{
		$arr['description'] = ADOConnection::GetOne("select version()");
		$arr['version'] = ADOConnection::_findvers($arr['description']);
		return $arr;
	}

	function IfNull( $field, $ifNull )
	{
		return " IFNULL($field, $ifNull) "; // if MySQL
	}

	function MetaProcedures($NamePattern = false, $catalog = null, $schemaPattern = null)
	{
		// save old fetch mode
		global $ADODB_FETCH_MODE;

		$false = false;
		$save = $ADODB_FETCH_MODE;
		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;

		if ($this->fetchMode !== FALSE) {
			$savem = $this->SetFetchMode(FALSE);
		}

		$procedures = array ();

		// get index details

		$likepattern = '';
		if ($NamePattern) {
			$likepattern = " LIKE '".$NamePattern."'";
		}
		$rs = $this->Execute('SHOW PROCEDURE STATUS'.$likepattern);
		if (is_object($rs)) {

			// parse index data into array
			while ($row = $rs->FetchRow()) {
				$procedures[$row[1]] = array(
					'type' => 'PROCEDURE',
					'catalog' => '',
					'schema' => '',
					'remarks' => $row[7],
				);
			}
		}

		$rs = $this->Execute('SHOW FUNCTION STATUS'.$likepattern);
		if (is_object($rs)) {
			// parse index data into array
			while ($row = $rs->FetchRow()) {
				$procedures[$row[1]] = array(
					'type' => 'FUNCTION',
					'catalog' => '',
					'schema' => '',
					'remarks' => $row[7]
				);
			}
		}

		// restore fetchmode
		if (isset($savem)) {
			$this->SetFetchMode($savem);
		}
		$ADODB_FETCH_MODE = $save;

		return $procedures;
	}

	/**
	 * Retrieves a list of tables based on given criteria
	 *
	 * @param string $ttype Table type = 'TABLE', 'VIEW' or false=both (default)
	 * @param string $showSchema schema name, false = current schema (default)
	 * @param string $mask filters the table by name
	 *
	 * @return array list of tables
	 */
	function MetaTables($ttype=false,$showSchema=false,$mask=false)
	{
		$save = $this->metaTablesSQL;
		if ($showSchema && is_string($showSchema)) {
			$this->metaTablesSQL .= $this->qstr($showSchema);
		} else {
			$this->metaTablesSQL .= "schema()";
		}

		if ($mask) {
			$mask = $this->qstr($mask);
			$this->metaTablesSQL .= " AND table_name LIKE $mask";
		}
		$ret = ADOConnection::MetaTables($ttype,$showSchema);

		$this->metaTablesSQL = $save;
		return $ret;
	}


	function MetaIndexes ($table, $primary = FALSE, $owner=false)
	{
		// save old fetch mode
		global $ADODB_FETCH_MODE;

		$false = false;
		$save = $ADODB_FETCH_MODE;
		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
		if ($this->fetchMode !== FALSE) {
			$savem = $this->SetFetchMode(FALSE);
		}

		// get index details
		$rs = $this->Execute(sprintf('SHOW INDEX FROM %s',$table));

		// restore fetchmode
		if (isset($savem)) {
			$this->SetFetchMode($savem);
		}
		$ADODB_FETCH_MODE = $save;

		if (!is_object($rs)) {
			return $false;
		}

		$indexes = array ();

		// parse index data into array
		while ($row = $rs->FetchRow()) {
			if ($primary == FALSE AND $row[2] == 'PRIMARY') {
				continue;
			}

			if (!isset($indexes[$row[2]])) {
				$indexes[$row[2]] = array(
					'unique' => ($row[1] == 0),
					'columns' => array()
				);
			}

			$indexes[$row[2]]['columns'][$row[3] - 1] = $row[4];
		}

		// sort columns by order in the index
		foreach ( array_keys ($indexes) as $index )
		{
			ksort ($indexes[$index]['columns']);
		}

		return $indexes;
	}


	// if magic quotes disabled, use mysql_real_escape_string()
	function qstr($s,$magic_quotes=false)
	{
		if (is_null($s)) return 'NULL';
		if (!$magic_quotes) {

			if (ADODB_PHPVER >= 0x4300) {
				if (is_resource($this->_connectionID))
					return "'".mysql_real_escape_string($s,$this->_connectionID)."'";
			}
			if ($this->replaceQuote[0] == '\\'){
				$s = adodb_str_replace(array('\\',"\0"),array('\\\\',"\\\0"),$s);
			}
			return "'".str_replace("'",$this->replaceQuote,$s)."'";
		}

		// undo magic quotes for "
		$s = str_replace('\\"','"',$s);
		return "'$s'";
	}

	function _insertid()
	{
		return ADOConnection::GetOne('SELECT LAST_INSERT_ID()');
		//return mysql_insert_id($this->_connectionID);
	}

	function GetOne($sql,$inputarr=false)
	{
	global $ADODB_GETONE_EOF;
		if ($this->compat323 == false && strncasecmp($sql,'sele',4) == 0) {
			$rs = $this->SelectLimit($sql,1,-1,$inputarr);
			if ($rs) {
				$rs->Close();
				if ($rs->EOF) return $ADODB_GETONE_EOF;
				return reset($rs->fields);
			}
		} else {
			return ADOConnection::GetOne($sql,$inputarr);
		}
		return false;
	}

	function BeginTrans()
	{
		if ($this->debug) ADOConnection::outp("Transactions not supported in 'mysql' driver. Use 'mysqlt' or 'mysqli' driver");
	}

	function _affectedrows()
	{
			return mysql_affected_rows($this->_connectionID);
	}

	 // See http://www.mysql.com/doc/M/i/Miscellaneous_functions.html
	// Reference on Last_Insert_ID on the recommended way to simulate sequences
	var $_genIDSQL = "update %s set id=LAST_INSERT_ID(id+1);";
	var $_genSeqSQL = "create table if not exists %s (id int not null)";
	var $_genSeqCountSQL = "select count(*) from %s";
	var $_genSeq2SQL = "insert into %s values (%s)";
	var $_dropSeqSQL = "drop table if exists %s";

	function CreateSequence($seqname='adodbseq',$startID=1)
	{
		if (empty($this->_genSeqSQL)) return false;
		$u = strtoupper($seqname);

		$ok = $this->Execute(sprintf($this->_genSeqSQL,$seqname));
		if (!$ok) return false;
		return $this->Execute(sprintf($this->_genSeq2SQL,$seqname,$startID-1));
	}


	function GenID($seqname='adodbseq',$startID=1)
	{
		// post-nuke sets hasGenID to false
		if (!$this->hasGenID) return false;

		$savelog = $this->_logsql;
		$this->_logsql = false;
		$getnext = sprintf($this->_genIDSQL,$seqname);
		$holdtransOK = $this->_transOK; // save the current status
		$rs = @$this->Execute($getnext);
		if (!$rs) {
			if ($holdtransOK) $this->_transOK = true; //if the status was ok before reset
			$u = strtoupper($seqname);
			$this->Execute(sprintf($this->_genSeqSQL,$seqname));
			$cnt = $this->GetOne(sprintf($this->_genSeqCountSQL,$seqname));
			if (!$cnt) $this->Execute(sprintf($this->_genSeq2SQL,$seqname,$startID-1));
			$rs = $this->Execute($getnext);
		}

		if ($rs) {
			$this->genID = mysql_insert_id($this->_connectionID);
			$rs->Close();
		} else
			$this->genID = 0;

		$this->_logsql = $savelog;
		return $this->genID;
	}

	function MetaDatabases()
	{
		$qid = mysql_list_dbs($this->_connectionID);
		$arr = array();
		$i = 0;
		$max = mysql_num_rows($qid);
		while ($i < $max) {
			$db = mysql_tablename($qid,$i);
			if ($db != 'mysql') $arr[] = $db;
			$i += 1;
		}
		return $arr;
	}


	// Format date column in sql string given an input format that understands Y M D
	function SQLDate($fmt, $col=false)
	{
		if (!$col) $col = $this->sysTimeStamp;
		$s = 'DATE_FORMAT('.$col.",'";
		$concat = false;
		$len = strlen($fmt);
		for ($i=0; $i < $len; $i++) {
			$ch = $fmt[$i];
			switch($ch) {

			default:
				if ($ch == '\\') {
					$i++;
					$ch = substr($fmt,$i,1);
				}
				/** FALL THROUGH */
			case '-':
			case '/':
				$s .= $ch;
				break;

			case 'Y':
			case 'y':
				$s .= '%Y';
				break;
			case 'M':
				$s .= '%b';
				break;

			case 'm':
				$s .= '%m';
				break;
			case 'D':
			case 'd':
				$s .= '%d';
				break;

			case 'Q':
			case 'q':
				$s .= "'),Quarter($col)";

				if ($len > $i+1) $s .= ",DATE_FORMAT($col,'";
				else $s .= ",('";
				$concat = true;
				break;

			case 'H':
				$s .= '%H';
				break;

			case 'h':
				$s .= '%I';
				break;

			case 'i':
				$s .= '%i';
				break;

			case 's':
				$s .= '%s';
				break;

			case 'a':
			case 'A':
				$s .= '%p';
				break;

			case 'w':
				$s .= '%w';
				break;

			 case 'W':
				$s .= '%U';
				break;

			case 'l':
				$s .= '%W';
				break;
			}
		}
		$s.="')";
		if ($concat) $s = "CONCAT($s)";
		return $s;
	}


	// returns concatenated string
	// much easier to run "mysqld --ansi" or "mysqld --sql-mode=PIPES_AS_CONCAT" and use || operator
	function Concat()
	{
		$s = "";
		$arr = func_get_args();

		// suggestion by andrew005@mnogo.ru
		$s = implode(',',$arr);
		if (strlen($s) > 0) return "CONCAT($s)";
		else return '';
	}

	function OffsetDate($dayFraction,$date=false)
	{
		if (!$date) $date = $this->sysDate;

		$fraction = $dayFraction * 24 * 3600;
		return '('. $date . ' + INTERVAL ' .	 $fraction.' SECOND)';

//		return "from_unixtime(unix_timestamp($date)+$fraction)";
	}

	// returns true or false
	function _connect($argHostname, $argUsername, $argPassword, $argDatabasename)
	{
		if (!empty($this->port)) $argHostname .= ":".$this->port;

		if (ADODB_PHPVER >= 0x4300)
			$this->_connectionID = mysql_connect($argHostname,$argUsername,$argPassword,
												$this->forceNewConnect,$this->clientFlags);
		else if (ADODB_PHPVER >= 0x4200)
			$this->_connectionID = mysql_connect($argHostname,$argUsername,$argPassword,
												$this->forceNewConnect);
		else
			$this->_connectionID = mysql_connect($argHostname,$argUsername,$argPassword);

		if ($this->_connectionID === false) return false;
		if ($argDatabasename) return $this->SelectDB($argDatabasename);
		return true;
	}

	// returns true or false
	function _pconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
	{
		if (!empty($this->port)) $argHostname .= ":".$this->port;

		if (ADODB_PHPVER >= 0x4300)
			$this->_connectionID = mysql_pconnect($argHostname,$argUsername,$argPassword,$this->clientFlags);
		else
			$this->_connectionID = mysql_pconnect($argHostname,$argUsername,$argPassword);
		if ($this->_connectionID === false) return false;
		if ($this->autoRollback) $this->RollbackTrans();
		if ($argDatabasename) return $this->SelectDB($argDatabasename);
		return true;
	}

	function _nconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
	{
		$this->forceNewConnect = true;
		return $this->_connect($argHostname, $argUsername, $argPassword, $argDatabasename);
	}

	function MetaColumns($table, $normalize=true)
	{
		$this->_findschema($table,$schema);
		if ($schema) {
			$dbName = $this->database;
			$this->SelectDB($schema);
		}
		global $ADODB_FETCH_MODE;
		$save = $ADODB_FETCH_MODE;
		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;

		if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
		$rs = $this->Execute(sprintf($this->metaColumnsSQL,$table));

		if ($schema) {
			$this->SelectDB($dbName);
		}

		if (isset($savem)) $this->SetFetchMode($savem);
		$ADODB_FETCH_MODE = $save;
		if (!is_object($rs)) {
			$false = false;
			return $false;
		}

		$retarr = array();
		while (!$rs->EOF){
			$fld = new ADOFieldObject();
			$fld->name = $rs->fields[0];
			$type = $rs->fields[1];

			// split type into type(length):
			$fld->scale = null;
			if (preg_match("/^(.+)\((\d+),(\d+)/", $type, $query_array)) {
				$fld->type = $query_array[1];
				$fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1;
				$fld->scale = is_numeric($query_array[3]) ? $query_array[3] : -1;
			} elseif (preg_match("/^(.+)\((\d+)/", $type, $query_array)) {
				$fld->type = $query_array[1];
				$fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1;
			} elseif (preg_match("/^(enum)\((.*)\)$/i", $type, $query_array)) {
				$fld->type = $query_array[1];
				$arr = explode(",",$query_array[2]);
				$fld->enums = $arr;
				$zlen = max(array_map("strlen",$arr)) - 2; // PHP >= 4.0.6
				$fld->max_length = ($zlen > 0) ? $zlen : 1;
			} else {
				$fld->type = $type;
				$fld->max_length = -1;
			}
			$fld->not_null = ($rs->fields[2] != 'YES');
			$fld->primary_key = ($rs->fields[3] == 'PRI');
			$fld->auto_increment = (strpos($rs->fields[5], 'auto_increment') !== false);
			$fld->binary = (strpos($type,'blob') !== false || strpos($type,'binary') !== false);
			$fld->unsigned = (strpos($type,'unsigned') !== false);
			$fld->zerofill = (strpos($type,'zerofill') !== false);

			if (!$fld->binary) {
				$d = $rs->fields[4];
				if ($d != '' && $d != 'NULL') {
					$fld->has_default = true;
					$fld->default_value = $d;
				} else {
					$fld->has_default = false;
				}
			}

			if ($save == ADODB_FETCH_NUM) {
				$retarr[] = $fld;
			} else {
				$retarr[strtoupper($fld->name)] = $fld;
			}
				$rs->MoveNext();
			}

			$rs->Close();
			return $retarr;
	}

	// returns true or false
	function SelectDB($dbName)
	{
		$this->database = $dbName;
		$this->databaseName = $dbName; # obsolete, retained for compat with older adodb versions
		if ($this->_connectionID) {
			return @mysql_select_db($dbName,$this->_connectionID);
		}
		else return false;
	}

	// parameters use PostgreSQL convention, not MySQL
	function SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs=0)
	{
		$nrows = (int) $nrows;
		$offset = (int) $offset;
		$offsetStr =($offset>=0) ? ((integer)$offset)."," : '';
		// jason judge, see http://phplens.com/lens/lensforum/msgs.php?id=9220
		if ($nrows < 0) $nrows = '18446744073709551615';

		if ($secs)
			$rs = $this->CacheExecute($secs,$sql." LIMIT $offsetStr".((integer)$nrows),$inputarr);
		else
			$rs = $this->Execute($sql." LIMIT $offsetStr".((integer)$nrows),$inputarr);
		return $rs;
	}

	// returns queryID or false
	function _query($sql,$inputarr=false)
	{

	return mysql_query($sql,$this->_connectionID);
	/*
	global $ADODB_COUNTRECS;
		if($ADODB_COUNTRECS)
			return mysql_query($sql,$this->_connectionID);
		else
			return @mysql_unbuffered_query($sql,$this->_connectionID); // requires PHP >= 4.0.6
	*/
	}

	/*	Returns: the last error message from previous database operation	*/
	function ErrorMsg()
	{

		if ($this->_logsql) return $this->_errorMsg;
		if (empty($this->_connectionID)) $this->_errorMsg = @mysql_error();
		else $this->_errorMsg = @mysql_error($this->_connectionID);
		return $this->_errorMsg;
	}

	/*	Returns: the last error number from previous database operation	*/
	function ErrorNo()
	{
		if ($this->_logsql) return $this->_errorCode;
		if (empty($this->_connectionID)) return @mysql_errno();
		else return @mysql_errno($this->_connectionID);
	}

	// returns true or false
	function _close()
	{
		@mysql_close($this->_connectionID);

		$this->charSet = '';
		$this->_connectionID = false;
	}


	/*
	* Maximum size of C field
	*/
	function CharMax()
	{
		return 255;
	}

	/*
	* Maximum size of X field
	*/
	function TextMax()
	{
		return 4294967295;
	}

	// "Innox - Juan Carlos Gonzalez" <jgonzalez#innox.com.mx>
	function MetaForeignKeys( $table, $owner = FALSE, $upper = FALSE, $associative = FALSE )
	{
	 global $ADODB_FETCH_MODE;
		if ($ADODB_FETCH_MODE == ADODB_FETCH_ASSOC || $this->fetchMode == ADODB_FETCH_ASSOC) $associative = true;

		if ( !empty($owner) ) {
			$table = "$owner.$table";
		}
		$a_create_table = $this->getRow(sprintf('SHOW CREATE TABLE %s', $table));
		if ($associative) {
			$create_sql = isset($a_create_table["Create Table"]) ? $a_create_table["Create Table"] : $a_create_table["Create View"];
		} else {
			$create_sql = $a_create_table[1];
		}

		$matches = array();

		if (!preg_match_all("/FOREIGN KEY \(`(.*?)`\) REFERENCES `(.*?)` \(`(.*?)`\)/", $create_sql, $matches)) return false;
		$foreign_keys = array();
		$num_keys = count($matches[0]);
		for ( $i = 0; $i < $num_keys; $i ++ ) {
			$my_field  = explode('`, `', $matches[1][$i]);
			$ref_table = $matches[2][$i];
			$ref_field = explode('`, `', $matches[3][$i]);

			if ( $upper ) {
				$ref_table = strtoupper($ref_table);
			}

			// see https://sourceforge.net/p/adodb/bugs/100/
			if (!isset($foreign_keys[$ref_table])) {
				$foreign_keys[$ref_table] = array();
			}
			$num_fields = count($my_field);
			for ( $j = 0; $j < $num_fields; $j ++ ) {
				if ( $associative ) {
					$foreign_keys[$ref_table][$ref_field[$j]] = $my_field[$j];
				} else {
					$foreign_keys[$ref_table][] = "{$my_field[$j]}={$ref_field[$j]}";
				}
			}
		}

		return $foreign_keys;
	}


}

/*--------------------------------------------------------------------------------------
	 Class Name: Recordset
--------------------------------------------------------------------------------------*/


class ADORecordSet_mysql extends ADORecordSet{

	var $databaseType = "mysql";
	var $canSeek = true;

	function __construct($queryID,$mode=false)
	{
		if ($mode === false) {
			global $ADODB_FETCH_MODE;
			$mode = $ADODB_FETCH_MODE;
		}
		switch ($mode)
		{
		case ADODB_FETCH_NUM: $this->fetchMode = MYSQL_NUM; break;
		case ADODB_FETCH_ASSOC:$this->fetchMode = MYSQL_ASSOC; break;
		case ADODB_FETCH_DEFAULT:
		case ADODB_FETCH_BOTH:
		default:
			$this->fetchMode = MYSQL_BOTH; break;
		}
		$this->adodbFetchMode = $mode;
		parent::__construct($queryID);
	}

	function _initrs()
	{
	//GLOBAL $ADODB_COUNTRECS;
	//	$this->_numOfRows = ($ADODB_COUNTRECS) ? @mysql_num_rows($this->_queryID):-1;
		$this->_numOfRows = @mysql_num_rows($this->_queryID);
		$this->_numOfFields = @mysql_num_fields($this->_queryID);
	}

	function FetchField($fieldOffset = -1)
	{
		if ($fieldOffset != -1) {
			$o = @mysql_fetch_field($this->_queryID, $fieldOffset);
			$f = @mysql_field_flags($this->_queryID,$fieldOffset);
			if ($o) $o->max_length = @mysql_field_len($this->_queryID,$fieldOffset); // suggested by: Jim Nicholson (jnich#att.com)
			//$o->max_length = -1; // mysql returns the max length less spaces -- so it is unrealiable
			if ($o) $o->binary = (strpos($f,'binary')!== false);
		}
		else {	/*	The $fieldOffset argument is not provided thus its -1 	*/
			$o = @mysql_fetch_field($this->_queryID);
			//if ($o) $o->max_length = @mysql_field_len($this->_queryID); // suggested by: Jim Nicholson (jnich#att.com)
			$o->max_length = -1; // mysql returns the max length less spaces -- so it is unrealiable
		}

		return $o;
	}

	function GetRowAssoc($upper = ADODB_ASSOC_CASE)
	{
		if ($this->fetchMode == MYSQL_ASSOC && $upper == ADODB_ASSOC_CASE_LOWER) {
			$row = $this->fields;
		}
		else {
			$row = ADORecordSet::GetRowAssoc($upper);
		}
		return $row;
	}

	/* Use associative array to get fields array */
	function Fields($colname)
	{
		// added @ by "Michael William Miller" <mille562@pilot.msu.edu>
		if ($this->fetchMode != MYSQL_NUM) 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 _seek($row)
	{
		if ($this->_numOfRows == 0) return false;
		return @mysql_data_seek($this->_queryID,$row);
	}

	function MoveNext()
	{
		//return adodb_movenext($this);
		//if (defined('ADODB_EXTENSION')) return adodb_movenext($this);
		if (@$this->fields = mysql_fetch_array($this->_queryID,$this->fetchMode)) {
			$this->_updatefields();
			$this->_currentRow += 1;
			return true;
		}
		if (!$this->EOF) {
			$this->_currentRow += 1;
			$this->EOF = true;
		}
		return false;
	}

	function _fetch()
	{
		$this->fields = @mysql_fetch_array($this->_queryID,$this->fetchMode);
		$this->_updatefields();
		return is_array($this->fields);
	}

	function _close() {
		@mysql_free_result($this->_queryID);
		$this->_queryID = false;
	}

	function MetaType($t,$len=-1,$fieldobj=false)
	{
		if (is_object($t)) {
			$fieldobj = $t;
			$t = $fieldobj->type;
			$len = $fieldobj->max_length;
		}

		$len = -1; // mysql max_length is not accurate
		switch (strtoupper($t)) {
		case 'STRING':
		case 'CHAR':
		case 'VARCHAR':
		case 'TINYBLOB':
		case 'TINYTEXT':
		case 'ENUM':
		case 'SET':
			if ($len <= $this->blobSize) return 'C';

		case 'TEXT':
		case 'LONGTEXT':
		case 'MEDIUMTEXT':
			return 'X';

		// php_mysql extension always returns 'blob' even if 'text'
		// so we have to check whether binary...
		case 'IMAGE':
		case 'LONGBLOB':
		case 'BLOB':
		case 'MEDIUMBLOB':
		case 'BINARY':
			return !empty($fieldobj->binary) ? 'B' : 'X';

		case 'YEAR':
		case 'DATE': return 'D';

		case 'TIME':
		case 'DATETIME':
		case 'TIMESTAMP': return 'T';

		case 'INT':
		case 'INTEGER':
		case 'BIGINT':
		case 'TINYINT':
		case 'MEDIUMINT':
		case 'SMALLINT':

			if (!empty($fieldobj->primary_key)) return 'R';
			else return 'I';

		default: return 'N';
		}
	}

}

class ADORecordSet_ext_mysql extends ADORecordSet_mysql {
	function __construct($queryID,$mode=false)
	{
		parent::__construct($queryID,$mode);
	}

	function MoveNext()
	{
		return @adodb_movenext($this);
	}
}

}