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function _query ($query, $data = array(), $flags = array() ) {   if ( count ($data) > 0 ) {     $phs = array_map(create_function('$ph',                     'return "\'".mysql_real_escape_string($ph)."\'";'), $data);     $curpos = 0;     $curph  = count($phs)-1;     for ($i=strlen($query)-1; $i>0; $i--) {       if ($query[$i] !== '?')  continue;       if ($curph < 0 || !isset($phs[$curph]))         $query = substr_replace($query, 'NULL', $i, 1);       else         $query = substr_replace($query, $phs[$curph], $i, 1);       $curph--;     }     unset($curpos, $curph, $phs);  }  if ( $r = mysql_query($query,$dc) ) {    return $r;  }  else {    return null;  }}