jquery - Passing back error data to .load() -

i'm calling php function delete file, using .load:

gallerystatus2$.load('deletepage.php',                  {pagename : $(e.target).val()},                 function(responsetxt,statustxt,xhr) {                 if(statustxt=="success")                     alert("external content loaded successfully!");                  if(statustxt=="error")                     alert("error: "+xhr.status+": "+xhr.statustext);             }); 

/* deletepage.php */

<?php  $filename = $_post['pagename'] . 'xml';  // comes in without suffix         $filepath =  $_server['document_root'] . "/users/user_" . $_session['user']['id'] . "/xmls/" . $_post['filename'];         if(!unlink ($filepath)) {                 echo ("<br />delete of $filepath failed");         }         else {             echo ("<br />deletepage.php: delete of $filepath succeeded");         }  ?> 

in case deletepage.php has serious errors. 1 of post values it's looking wasn't passed , actual unlink operation fails. on client, statustxt reports "success" , "external content loaded successfully!"

how can tell client php things did not go well.

thanks

in case, need read 'responsetxt' instead of 'statustxt' (without changing 'deletepage.php':

gallerystatus2$.load('deletepage.php',      {pagename : $(e.target).val()},     function(responsetxt,statustxt,xhr) {         if(statustxt=="success") {             if(responsetxt.indexof('succeeded') >= 0) {                 alert("external content loaded successfully!");             } else {                 alert("error: "+xhr.status+": "+xhr.statustext);             }         } else if(statustxt=="error")             alert("error: "+xhr.status+": "+xhr.statustext);     } ); 

2nd option: .js

gallerystatus2$.load('deletepage.php',      {pagename : $(e.target).val()},     function(responsetxt,statustxt,xhr) {         if(statustxt=="success") {             if(responsetxt) {                 var obj = jquery.parsejson(responsetxt);                 if(obj && obj.status == 'success') {                     //success whatever need                     alert(obj.msg);                 } else {                     //fail whatever need                     alert(obj.msg);                 }             }         } else if(statustxt=="error")             alert("error: "+xhr.status+": "+xhr.statustext);     } ); 

.php

<?php $filename = $_post['pagename'] . 'xml';  // comes in without suffix $filepath =  $_server['document_root'] . "/users/user_" . $_session['user']['id'] . "/xmls/" . $_post['filename']; $response = array('status' => '', 'msg' => ''); if(!unlink ($filepath)) {     $response['status'] = 'success';     $response['msg'] = '<br />delete of $filepath failed'; } else {     $response['status'] = 'error';     $response['msg'] = '<br />deletepage.php: delete of $filepath succeeded'; } json_encode($response); ?>