Jquery PHP Ajax data logger fails

Question

Working from previous question: Create log text file using Javascript I'd like to log click events from a news scroller. The event detection works and triggers the alert.

    $("a.marq").click(function(){
    var url = $(this).attr('href');
    $.ajax({
      type:'POST',
      data:"ClickedButton="+url, 
      url: 'logger.php',
      success: function(data){
        //alert('req: '+url);
      }
      }); // END Ajax 
   });

Taking the php code from the referenced question, I created the logger:

   <?php
     // File: logger.php
    $myFile = "clicklog.txt";
    $fh = fopen($myFile, 'w') or die("can't open file");
    $stringData = $_POST['ClickedButton'];
    fwrite($fh, $stringData);
    fclose($fh);
  ?>

The click events trigger the alert and display the correct data, but nothing is logged by the server. I checked server logs and nothing seemed to trapped. The server is running Apache mod_security, nothing in the logs that I could spot. It's simple "crawl-before-you-run" code, but I was tired of crawling and posted the question. I put the logger.php in the url root, touched the clicklog.txt file.

try for data: {'ClickedButton': url} and secondly check on your browsers console for errors, if its clean check for post data. And try to add error: function(jqXHR jqXHR, String textStatus, String errorThrown) {//handle error here} — Sahil Sharma
– Sahil Sharma, Commented Mar 31, 2015 at 5:09
@Franky Franky, added data: {'ClickedButton': url}, error: function(jqXHR, textStatus, errorThrown) { alert('An error occurred... '); No errors. Didn't match your suggestion, but close, sorry, This is new to me. Still no errors or logging. Any suggestions? }, — webgeek atlbike
– webgeek atlbike, Commented Mar 31, 2015 at 6:00

webgeek atlbike · Accepted Answer · 2015-03-31 08:36:43Z

Apache write permissions, need g+apache, 774. Also needs 'a' not 'w' for appending to log file, $fh = fopen($myFile, 'a') or die("can't open file"); Thx to commenters for error handling and other changes that may have helped.
Working code:

     $("a.marq").click(function(){
        var url = $(this).attr('href');
        $.ajax({
        type:'POST',
        data: {'ClickedButton': url}, 
       url: 'code/logger.php',
       error: function(jqXHR, textStatus, errorThrown) {
            alert('An error occurred... ');
            },
       success: function(data){
         //alert('req: '+url);
     }
     }); // END Ajax 
   });



    <?php
   // File: logger.php
   // ----------------------------------------------------------------------
     $myFile = "/xxxxx/code/click.log";
     $fh = fopen($myFile, 'a') or die("can't open file");
     $stringData = $_POST['ClickedButton'];
     fwrite($fh, $stringData);
     fclose($fh);
   ?>

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