adodb-mysql.inc.php

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<?php
/*
@version   v5.20.3  01-Jan-2016
@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 = '`';       
    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;
    }

    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);
                }
            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)
    {
        $offsetStr =($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/tracker/index.php?func=detail&aid=2287278&group_id=42718&atid=433976
            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);
    }
}

}