Hi, i got the prolem with /public_html/includes/common_functions.php on line 161here's the code:

PHP Code:

<?
function redirect($url)
{
    echo "<script language=\"javascript\">";
    echo "window.location.href=\"$url\"";
    echo "</script>";
    exit();
}

function reload()
{
    echo "<script language=\"javascript\">";
    echo "window.location.reload()";
    echo "</script>";
    exit();
}

function validGetVar($getVal)
{
    $damStr = "{/,',?,&,\"}";
    if(ereg($damStr,$getVal)) return false;
    return true;
}

function inDateStr($strDate)
{
    $strDate = trim($strDate);
    list($day, $month, $year) = split('[/.-]', $strDate);
    $strDate = "$year-$month-$day";
    return $strDate;
}

function outDateStr($strDate,$sep="/")
{    
    $strDate = trim($strDate);
    list($year, $month, $day) = split('[/.-]', $strDate);
    $strDate = "$day/$month/$year";
    return $strDate;
}

function cutString($str,$sPos,$ePos)
{
    $result = NULL;
    while($str[$ePos]!=" " && $str[$ePos]!=NULL) $ePos--;
    $result = substr($str,$sPos,$ePos);
    return $result;
}

function extFile($strFile)
{
    $ext = NULL;
    $strFile = trim($strFile);
    $splitStr = split("~",str_replace(".","~",$strFile));
    sizeof($splitStr);
    if(sizeof($splitStr)>1) $ext = $splitStr[sizeof($splitStr)-1];
    return $ext;
}

function _POST($value)
{
    global $_GET, $_POST, $HTTP_POST_VARS,$HTTP_GET_VARS;
    if (isset($_POST["$value"])) return $_POST["$value"];
    elseif (isset($HTTP_POST_VARS["$value"])) return $HTTP_POST_VARS["$value"];
    elseif (isset($_GET["$value"])) return $_GET["$value"];
    elseif (isset($HTTP_GET_VARS["$value"])) return $HTTP_GET_VARS["$value"];
    else return NULL;
}
function _SESSION($session_name)
{
    global $_SESSION,$HTTP_SESSION_VARS;
    if (isset($_SESSION["$session_name"])) return $_SESSION["$session_name"];
    elseif (isset($HTTP_SESSION_VARS["$session_name"])) return $HTTP_SESSION_VARS["$session_name"];
    else return NULL;
}

function getStars($class=1)
{
    global $_IMG_DIR;

    $star = NULL;
    settype($class,"integer");
    for($i=0;$i<$class;$i++)
    {
        $star .= "<img src=\"$_IMG_DIR/star.gif\">";
    }
    return $star;
}

function numOpt($item=NULL,$label=NULL,$low=2,$high=5)
{
    $strOpt  = "<option value=\"\" checked>$label</option>";    
    for($i=$low;$i<=$high;$i++)
    {
        $strOpt .= "<option value=$i " ;
        if($i==$item)    $strOpt .=" selected  ";
        $strOpt .= ">&nbsp;".$i."&nbsp;</option>";
    }
    return $strOpt;
}

function priceOpt($item=NULL,$low=15,$high=165,$level=15)
{
    global $define;
    $strOpt  = "<option value=\"\"  checked>";
    $strOpt .= $define["asia_gia"]."</option>";
    $value = $define["asia_duoi"] . " - " . $low;
    $strOpt .= "<option value=\"$value\" " ;
    if($value==$item)    $strOpt .=" selected  ";
    $strOpt .= ">$value</option>";
    for($i=$low;$i<$high;$i+=$level)
    {
        if($i+$level<$high) $value = $i . " - " . ($i+$level-1);
        else $value = $i . " - " . ($i+$level);
        $strOpt .= "<option value=\"$value\" " ;
        if($value==$item)    $strOpt .=" selected  ";
        $strOpt .= ">$value</option>";
    }
    $value = $define["asia_tren"] . " - " . $high;
    $strOpt .= "<option value=\"$value\" " ;
    if($value==$item)    $strOpt .=" selected  ";
    $strOpt .= ">$value</option>";
    return $strOpt;
}

function roomOpt($lodging)
{
    $opt = new option();
    $strRoom = $opt->optionvalue("vnws_lodging","lodging_occupancy","lodging_id=$lodging");
    $rooms = split("~",$strRoom);
    $strOpt = NULL;
    for($i=0;$i<sizeof($rooms);$i++)
    {
        $name = $opt->optionvalue("vnws_roomtype","roomtype_name","roomtype_id='".$rooms[$i]."'");
        $strOpt .= '<option value="'.$name.'">'.$name.'</option>';
    }
    return $strOpt;
}

// Define
define('FILE_NOT_EXIST','Lỗi! File không tồn tại');
define('ERROR_FILE_NOT_WRITEABLE','Lỗi! Không thể ghi file');
// End define

function openFile($file)
{
    if(!is_file($file))
    {
        echo FILE_NOT_EXIST;
        return NULL;
    }
    $file_array = file($file);
    $content = implode('',$file_array);
    return $content;
}

function saveFile($file,$content)
{
    global $messageStack;
    if(!is_writeable($file))
    {
        $messageStack->reset();
        $messageStack->add(sprintf(ERROR_FILE_NOT_WRITEABLE,$file),'error');
        echo $messageStack->output();
        return false;
    }
    $new_file = fopen($file,'w');
    $content = stripslashes($content);
    fwrite($new_file,$content,strlen($content));
    fclose($new_file);
    return true;
}

function validImage($src,$name=NULL)
{
    if($name==NULL) $name = $src;
    $ext = strtolower(extFile($name));
    $listExt = array('jpg','gif','png','bmp');
    if(!in_array($ext,$listExt)) return false;
    $fsize = @filesize($src)/1024/1024;
    if(($fsize<=0)||($fsize>1.95)) return false;
    return true;
}

function imageSize($img,$maxW=100,$maxH=100)
{
    if(!validImage($img)) return false;
    if($maxW<=0||$maxH<=0) return false;
    
    $sizeOut = array();
    $imgSize = getimagesize($img);
    $sizeOut = $imgSize;
    
    $x_ratio = $maxW/$imgSize[0];
    $y_ratio = $maxH/$imgSize[1];
    $ratio = min($x_ratio,$y_ratio);
    
    if(($imgSize[0]>$maxW)||($imgSize[1]>$maxH))
    {
        $sizeOut[0] = $imgSize[0]*$ratio;
        $sizeOut[1] = $imgSize[1]*$ratio;
    }
    return $sizeOut;
}
?>

Can anyone help ?? Thanks alot.

$messageStack->reset();

The $messageStack var is not an object type

You need to make sure the object is created first

Sorry i'm a newbie in PHP so can you tell me more details like how to fix it ??
Thank you very much for your help.

It appears that $messageStack is supposed to be an instance of an object, but I don't see it initialized anywhere. From your code I can't tell what object it is supposed to be an instance of, is there a class anywhere in your code called MessageStack or Stack?

If it is supposed to be a stack I've never heard of a stack datastructure built into php so there must be one in your code somewhere. Check your other files.

To clarify what jim said, the -> operator works like the dot operator in java and c++. It's used to access methods and member variables of an object. It has no meaning in the context of a non-object.

Hi there's a functions file that have $messageStack

PHP Code:

<?
function cutString($str,$sPos,$ePos)
{
    $result = NULL;
    while($str[$ePos]!=" " && $str[$ePos]!=NULL) $ePos--;
    $result = substr($str,$sPos,$ePos);
    return $result;
}

function formatStringDefineIn($str)
{
    $str = str_replace('"','``',$str);
    return $str;
}

function formatStringDefineOut($str)
{
    $str = str_replace('``','"',$str);
    return $str;
}
 
function removeHtmlTag($str,$tag)
{
    $strCopy = strtolower($str);
    $tag = strtolower($tag);    
    $len = strlen($strCopy);
    $sPos = strpos($strCopy,"<$tag");
    $ePos = $sPos+1;
    while(($ePos<$len)&&($strCopy[$ePos]!=">"))
    {
        $ePos++;
    }
    $str = substr($str,0,$sPos).substr($str,$ePos+1);
    return $str;
}

function inDateStr($strDate)
{
    $strDate = trim($strDate);
    list($day, $month, $year) = split('[/.-]', $strDate);
    $strDate = "$year-$month-$day";
    return $strDate;
}
  
function outDateStr($strDate)
{
    $strDate = trim($strDate);
    list($year, $month, $day) = split('[/.-]', $strDate);
    $strDate = "$day/$month/$year";
    return $strDate;
}

function getStars($class=1)
{
    $star = NULL;
    for($i=0;$i<$class;$i++)
    {
        $star .= '<img src="images/star.gif">';
    }
    return $star;
}

function starOpt($item=NULL,$low=1,$high=5)
{
    $strOpt  = "<option value=\"\"  checked>";
    $strOpt .= "-- Stars --</option>";    
    for($i=$low;$i<=$high;$i++)
    {
        $strOpt .= "<option value=$i " ;
        if($i==$item)    $strOpt .=" selected  ";
        $strOpt .= ">".$i." Stars</option>";
    }
    return $strOpt;
}

function createPropertyForm($sufTblName,$proStr)
{
    $pros = split("~",$proStr);
    echo '<table cellpadding="5" cellspacing="0">';
    $sql = new mysql();
    $sql->set_query("vnws_".$sufTblName,"*",NULL,"ORDER BY ".$sufTblName."_order");
    while($sql->set_farray())
    {
        $id = $sql->farray[$sufTblName."_id"];
        $name = $sql->farray[$sufTblName."_name"];
        $proValue = NULL;
        for($i=0;$i<sizeof($pros);$i++)
        {
            list($proN,$proV) = split("::",$pros[$i]);
            if($proN==$id) $proValue = $proV;
        }
        echo '<tr><td class="rowform" nowrap>'.$name.':</td><td class="rowform">';
        echo '<input name="proValue" size="30" value="'.$proValue.'" class="textbox" onKeyUp="telexingVietUC(this)">';
        echo '</td></tr>';
        echo '<input type="hidden" name="proID" value="'.$id.'">';
    }
    echo '</table>';
}

function createOccupancyNameForm($occStr)
{
    $occs = split("~",$occStr);
    $sql = new mysql();
    $sql->set_query("vnws_occupancy","*",NULL,"ORDER BY occupancy_order");
    $ttRws = $sql->nRows;        
    $nCols = 3;
    $numRws = (round($ttRws/$nCols)>0) ? round($ttRws/$nCols) : 1;
    if($ttRws/$numRws>$nCols) $numRws++;
    $wCols = floor(100/$nCols);
    $count = 1;
    echo '<table cellpadding="5" cellspacing="0" width="100%">';
    echo '<tr><td class="rowform" width="'.$wCols.'%" valign="top">';
    while($sql->set_farray())
    {
        $id = $sql->farray["occupancy_id"];
        $name = $sql->farray["occupancy_name"];
        $checked = NULL;
        if(in_array($id,$occs)) $checked = "checked";
        echo '<div><input type="checkbox" name="occName" '.$checked.' value="'.$id.'">'.$name.'</div>';
        if($count%$numRws == 0) echo '</td><td class="rowform" width="'.$wCols.'%" valign="top">';
        $count++;
    }
    echo '</td></tr></table>';
}

function createOccupancyForm($lodging_id,$occStr)
{
    $occs = split("~",$occStr);
    $opt = new option();
    $occNames = $opt->optionvalue("vnws_lodging","lodging_occupancy","lodging_id='".$lodging_id."'");
    $occNames = split("~",$occNames);
    $ttRws = sizeof($occNames);
    echo '<table cellpadding="2" cellspacing="0" width="100%">';
    for($i=0;$i<$ttRws;$i++)
    {
        $oname = $opt->optionvalue("vnws_occupancy","occupancy_name","occupancy_id='".$occNames[$i]."'");
        $checked = NULL;
        $oValue = NULL;
        for($j=0;$j<sizeof($occs);$j++)
        {
            list($oN,$oV) = split("::",$occs[$i]);
            if($oN==$occNames[$i]) 
            {
                if($oV!=YES) $oValue = $oV;
                $checked = "checked";
            }
        }
        echo '<tr><td nowrap width="10%">'.$oname.'</td>';
        echo '<td>: <input name="oValue" size="11" value="'.$oValue.'" class="textbox"></td></tr>';
        echo '<input type="hidden" name="oID" value="'.$occNames[$i].'">';
    }
    echo '</table>';
}

function occupancyViewing($sufTblName,$occStr)
{
    $opt = new option();
    $occs = split("~",$occStr);
    echo '<table cellpadding="2" cellspacing="0" width="100%">';
    for($i=0;$i<sizeof($occs);$i++)
    {
        list($occN,$occV) = split("::",$occs[$i]);
        $name = $opt->optionvalue("vnws_".$sufTblName,$sufTblName."_name",$sufTblName."_id='".$occN."'");
        echo '<tr height="25"><td nowrap width="5%" style="padding-left:25px">'.$name.'</td>';
        echo '<td width="90%">: <font color="#FF6600">'.$occV.'</font></td></tr>';
    }
    echo '</table>';
}

function occupancyNameViewing($occStr)
{
    $opt = new option();
    $occs = split("~",$occStr);
    $ttRws = sizeof($occs);        
    $nCols = 2;
    $numRws = (round($ttRws/$nCols)>0) ? round($ttRws/$nCols) : 1;
    if($ttRws/$numRws>$nCols) $numRws++;
    $wCols = floor(100/$nCols);
    $count = 1;
    echo '<table cellpadding="5" cellspacing="0" width="100%">';
    echo '<tr><td width="'.$wCols.'%" valign="top" style="color:#003399"><ul>';
    for($i=0;$i<sizeof($occs);$i++)
    {
        $name = $opt->optionvalue("vnws_occupancy","occupancy_name","occupancy_id='".$occs[$i]."'");
        echo "<li>$name</li>";
        if($count%$numRws == 0) echo '</ul></td><td width="'.$wCols.'%" valign="top" style="color:#003399"><ul>';
        $count++;
    }
    echo '</ul></td></tr></table>';
}

function outPermisionStr($strPer)
{
    $strPer = trim($strPer);
    $usrper = array();
    list($usrper["canEdit"],$usrper["canAdd"],$usrper["canDel"],$usrper["canUser"]) = split('_',$strPer);
    return $usrper;
}

function setPermisionChecked($perm)
{
    $permChked = array();
    if($perm["canEdit"]==YES) $permChked["cEdit"] = "checked";
    if($perm["canAdd"]==YES) $permChked["cAdd"] = "checked";
    if($perm["canDel"]==YES) $permChked["cDel"] = "checked";
    if($perm["canUser"]==YES) $permChked["cUser"] = "checked";
    return $permChked;
}

// Parse the data used in the html tags to ensure the tags will not break
function parse_input_field_data($data, $parse) 
{
    return strtr(trim($data), $parse);
}

function output_string($string, $translate = false, $protected = false) 
{
    if ($protected == true) 
    {
        return htmlspecialchars($string);
    } 
    else 
    {
        if ($translate == false) 
        {
            return parse_input_field_data($string, array('"' => '&quot;'));
        } 
        else 
        {
            return parse_input_field_data($string, $translate);
        }
    }
}

//File
function delFile($file)
{
    if(file_exists($file)) @$ok = unlink($file);
}
  
function upLoad($userFile,$fileName)
{
    if(file_exists($userFile))
    {
        $upFile = "../$fileName";
        move_uploaded_file($userFile,$upFile);  
    }
} 

//Redirect to "$url" address
function redirect($url) 
{
    if(!headers_sent())
    {
        header("Location: $url");
    }
    else
    {
        echo "<script language=javascript>location.href='".$url."'</script>";
    }
    exit();
}

//Check a varriable
function not_null($value) 
{
    if (is_array($value)) 
    {
        if (sizeof($value) > 0) 
        {
            return true;
        } 
        else 
        {
            return false;
        }
    } 
    else 
    {
        if ((is_string($value) || is_int($value)) && ($value != '') && ($value != 'NULL') && (strlen(trim($value)) > 0)) 
        {
            return true;
        } 
        else 
        {
            return false;
        }
    }
}

// loc1 is the path on the computer to the base directory that may be moved
define('loc1', '', true);
// copy a directory and all subdirectories and files (recursive)
// void dircpy( str 'source directory', str 'destination directory' [, bool 'overwrite existing files'] )
function dircpy($source, $dest, $overwrite = false)
{
    if($handle = opendir(loc1.$source))
    {       
        // if the folder exploration is sucsessful, continue
        $dest_path = loc1.$dest;
        if(@!is_dir($dest_path)) mkdir($dest_path,0777);
        while(false!==($file = readdir($handle)))
        { 
            // as long as storing the next file to $file is successful, continue
            if($file != '.' && $file != '..')
            {
                $path = "$source/$file";
                if(is_file(loc1.$path))
                {
                    if(!is_file(loc1."$dest/$file") || $overwrite)
                        if(!@copy(loc1.$path, loc1."$dest/$file"))
                        {
                            echo '<font color="red">File ('.$path.') could not be copied, likely a permissions problem.</font>';
                        }
                }
                elseif(is_dir(loc1.$path))
                {
                    if(!is_dir("$dest_path/$file"))
                        mkdir("$dest_path/$file",0777); // make subdirectory before subdirectory is copied
                    dircpy($path, "$dest/$file", $overwrite); //recurse!
                }
            }
        }
        closedir($handle);
    }
} 
// end of dircpy()

//This function used to remove directory
function removeDir($source) 
{
    global $messageStack, $tep_remove_error;

    if (isset($tep_remove_error)) $tep_remove_error = false;

    if (is_dir($source)) 
    {
        $dir = dir($source);
        while ($file = $dir->read()) 
        {
            if(($file != '.')&&($file != '..')) 
            {
                if(is_writeable("$source/$file")) 
                {
                    removeDir("$source/$file");
                } 
                else 
                {
                    $messageStack->add(sprintf(ERROR_FILE_NOT_REMOVEABLE, "$source/$file"), 'error');
                    $tep_remove_error = true;
                }
            }
        }
        $dir->close();

        if (is_writeable($source)) 
        {
            rmdir($source);
        } 
        else 
        {
            $messageStack->add(sprintf(ERROR_DIRECTORY_NOT_REMOVEABLE, $source), 'error');
            $tep_remove_error = true;
        }
    } 
    else 
    {
        if (is_writeable($source)) 
        {
            unlink($source);
        } 
        else 
        {
            $messageStack->add(sprintf(ERROR_FILE_NOT_REMOVEABLE, $source), 'error');
            $tep_remove_error = true;
        }
    }
}
//End romoveDir function

function formatFileName($fname)
{
    $abc='abcdefghijklmnopqrstvuxywz._0123456789';
    settype($fname,'string');
    $fname = strtolower($fname);
    $fname = str_replace(" ","",$fname);
    $len=strlen($fname);
    for($i=0;$i<$len;$i++)
    {
        if(!strstr($abc,$fname[$i]))
            $fname=str_replace($fname[$i],'_',$fname);
    }
    return $fname;
}
  
function extFile($strFile)
{
    $ext = NULL;
    $strFile = trim($strFile);
    $splitStr = split("~",str_replace(".","~",$strFile));
    sizeof($splitStr);
    if(sizeof($splitStr)>1) $ext = $splitStr[sizeof($splitStr)-1];
    return $ext;
}

function validImage($src,$name=NULL)
{
    if($name==NULL) $name = $src;
    $ext = strtolower(extFile($name));
    $listExt = array('jpg','gif','png','bmp');
    if(!in_array($ext,$listExt)) return false;
    $fsize = @filesize($src)/1024/1024;
    if(($fsize<=0)||($fsize>1.95)) return false;
    return true;
}

function icon_img($fimg='')
{
    if(!is_file("../$fimg")||($fimg==""))
    {
        $icon_img = $icon_error;
    }
    else
    {
        $icon_img = "images/".extFile($fimg)."gif";
    }
    return $icon_img;
}
    
function imageSize($img,$maxW=100,$maxH=100)
{
    if(!validImage($img)) return false;
    if($maxW<=0||$maxH<=0) return false;
    
    $sizeOut = array();
    $imgSize = getimagesize($img);
    $sizeOut = $imgSize;
    
    $x_ratio = $maxW/$imgSize[0];
    $y_ratio = $maxH/$imgSize[1];
    $ratio = min($x_ratio,$y_ratio);
    
    if(($imgSize[0]>$maxW)||($imgSize[1]>$maxH))
    {
        $sizeOut[0] = $imgSize[0]*$ratio;
        $sizeOut[1] = $imgSize[1]*$ratio;
    }
    return $sizeOut;
}

function imageSrc($img,$file_type)
{
    $imgSrc = false;
    if($file_type=="jpeg") $file_type = 'jpg';
    switch($file_type)
    {
        case 'jpg':
            if(function_exists("imagecreatefromjpeg"))
            {
                $imgSrc = imagecreatefromjpeg("$img");
            }
            break;
        case 'gif':
            if(function_exists("imagecreatefromgif"))
            {
                $imgSrc = imagecreatefromgif("$img");
            }
            break;
        case 'png':
            if(function_exists("imagecreatefrompng"))
            {
                $imgSrc = imagecreatefrompng("$img");
            }
            break;
        case 'bmp':
            if(function_exists("imagecreatefromwbmp"))
            {
                $imgSrc = imagecreatefromwbmp("$img");
            }
            break;
    }
    return $imgSrc;
}

function imageOut($file_type,$thumb,$pathOut=NULL)
{
    $imgOut = NULL;
    $func = NULL;    
    if($file_type=="jpg"||$file_type=="jpeg")
    {
        $quality=100;
        if(function_exists("imagejpeg")) $image = imagejpeg($thumb,$pathOut,$quality);
    }
    if($file_type=="gif"||$file_type=="bmp") $func = "imagegif";
    if($file_type=="png") $func = "imagepng";

    if(function_exists("$func")) $imgOut = $func($thumb,$pathOut);
    return $imgOut;
}

function imageCopyResize($image,$xSize,$ySize,$chgScale="NO",$new_image_path=NULL)
{
    if(!file_exists($image)) return "File not exist";
    if($xSize==0||$ySize==0) return "At the leat one pair of size is 0";
    
    $width = 0; 
    $height = 0;
    
    $size = getimagesize($image);
    $ratio = min($xSize/$size[0],$ySize/$size[1]);
    if($chgScale!="NO")
    {
        $width = $xSize;
        $height = $ySize;        
    }
    elseif($ratio < 1)
    {
        $width = ceil($size[0]*$ratio);
        $height = ceil($size[1]*$ratio);
    }    
    if(($width>0)&&($width!=$size[0])&&($height>0)&&($height!=$size[1]))
    {
        $file_type = strtolower(extFile($image));
        $imgSrc = imageSrc($image,$file_type);
        if($imgSrc=="Unknown") return "Unknown image format: $file_type"; 
        
        $pathOut = ($new_image_path==NULL) ? $image : $new_image_path;
        $thumb = imagecreatetruecolor($width, $height);
        imagecopyresampled($thumb,$imgSrc,0,0,0,0,$width,$height,$size[0],$size[1]);
        $imgOut = imageOut($file_type,$thumb, $pathOut);
        
        imagedestroy($imgSrc);
        imagedestroy($thumb);
    }
    else if($new_image_path!=NULL)
    {
        copy($image,$new_image_path);
    }
    return $imgOut;
}

// Define
define('FILE_NOT_EXIST','Lỗi! File không tồn tại');
define('ERROR_FILE_NOT_WRITEABLE','Lỗi! Không thể ghi file');
// End define

function openFile($file)
{
    if(!is_file($file))
    {
        echo FILE_NOT_EXIST;
        return NULL;
    }
    $file_array = file($file);
    $content = implode('',$file_array);
    return $content;
}

function saveFile($file,$content)
{
    global $messageStack;
    if(!is_writeable($file))
    {
        $messageStack->reset();
        $messageStack->add(sprintf(ERROR_FILE_NOT_WRITEABLE,$file),'error');
        echo $messageStack->output();
        return false;
    }
    $new_file = fopen($file,'w');
    $content = stripslashes($content);
    fwrite($new_file,$content,strlen($content));
    fclose($new_file);
    return true;
}

function _POST($value)
{
    global $_GET, $_POST, $HTTP_POST_VARS,$HTTP_GET_VARS;
    if (isset($_POST["$value"])) return $_POST["$value"];
    elseif (isset($HTTP_POST_VARS["$value"])) return $HTTP_POST_VARS["$value"];
    elseif (isset($_GET["$value"])) return $_GET["$value"];
    elseif (isset($HTTP_GET_VARS["$value"])) return $HTTP_GET_VARS["$value"];
    else return ;
}
function _SESSION($session_name)
{
    global $_SESSION,$HTTP_SESSION_VARS;
    if (isset($_SESSION["$session_name"])) return $_SESSION["$session_name"];
    elseif (isset($HTTP_SESSION_VARS["$session_name"])) return $HTTP_SESSION_VARS["$session_name"];
    else return ;
}
?>

I just did a google search for messageStack and found some oscommerce code that uses messageStack.. do you have a file somewhere called message_stack.php?

Thanks you all i finally find out what made that problem. Actually it's my friend problem after searching and view all his files i can see that he hasn't got any file call messageStack after that i checked some other files and find out the real problem is in his footer.php code there're a class that try to call non-object type so i del it and the problem has been solved.
Thanks again for your helpful

Sorry, it is best to know all the programmer jargon first.

An object is a data type:

http://us2.php.net/manual/en/language.types.php

Click the Objects link