ajax返回成功，但mysql-db未更新

我有一个javascript for循环，它将一个数组发送到ajax页面以更新mysql数据库。

我将结果回显到原始页面，它回显为成功，但当我检查数据库时，没有任何变化

我的javascript for循环发送数组

for(var m=0; m<array.length; m++){
    $.post("update_page_positions.php",{page_ref:array[m][0], ref:array[m][12], menu_pos:array[m][1], sub_menu_pos:array[m][2], top_menu:array[m][3], pagelink:array[m][4], indexpage:array[m][5], hidden:array[m][6], page_title:array[m][7], page_desc:array[m][8], page_keywords:array[m][9], page_name:array[m][10], deletedpage:array[m][11]},         
        function(data,status){  
            alert("data="+data+" status="+status);   
});                 

这是更新数据库的php-ajax页面

<?
    include("connect.php");     
    $ref = $_POST['ref'];
    $page_ref = $_POST['page_ref'];
    $menu_pos = $_POST['menu_pos'];
    $sub_menu_pos = $_POST['sub_menu_pos'];  
    $top_menu = $_POST['top_menu'];
    $indexpage = $_POST['indexpage'];       
    $page_name = $_POST['page_name'];    
    $page_title = $_POST['page_title'];
    $page_desc = $_POST['page_desc'];   
    $page_keywords = $_POST['page_keywords'];   
    $hidden = $_POST['hidden']; 
    $pagelink = $_POST['pagelink']; 
    $deletedpage = $_POST['deletedpage'];   
    $query = mysql_query("SELECT * FROM pages WHERE ref='$ref' AND page_ref='$page_ref'");
 if(mysql_num_rows($query)==0){
    mysql_query("INSERT INTO pages(page_ref, ref, page_name, menu_pos, sub_menu_pos, top_menu, link, indexpage) VALUES('$page_ref','$ref','$page_name','$menu_pos','$sub_menu_pos','$top_menu','$pagelink','$indexpage')");
}
 if($deletedpage=="1"){
        mysql_query("DELETE FROM pages WHERE ref='$ref' AND page_ref='$page_ref'");         
        mysql_query("DELETE FROM site_content WHERE ref='$ref' AND page_ref='$page_ref'");
 } 
 else{       
       if(mysql_query("UPDATE pages SET menu_pos='$menu_pos', sub_menu_pos='$sub_menu_pos', top_menu='$top_menu', indexpage='$indexpage', page_name='$page_name', page_title='$page_title', desc1='$page_desc', keywords_list='$page_keywords', hidden='$hidden', link='$pagelink' WHERE ref='$ref' AND page_ref='$page_ref'")){
        echo "updated!";
     } else{
        echo "error";           
      }
 }   
?>

INSERT和DELETE函数很好，但UPDATE返回一个成功语句，但不更新数据库。

有人能看到问题出在哪里吗？