Question

I Have a simple function that have to write on the file, it work on my local server but when i deploy it on the server it doesn’t write on the file? What is wrong ?

foo.php

<?
if (isset($_POST['data'])) {
         $stringData = $_POST['data'];
         $file = "ciao.txt"; 
         $fh = fopen($file, 'w') or die("can't open file");
         fwrite($fh, $stringData);
         fclose($fh); 
 }
 ?>

function.js

function WriteToFile() 
{
    var data = "foo baaar";
    $.post("JS/foo.php", {data: data}, function(result){ alert("label updated!!");}, "json");
}

Answer 1

<?
if (isset($_POST['data'])) {
         $stringData = $_POST['data'];
         $file = "ciao.txt"; 
         $fh = fopen($file, 'w') or die("can't open file");
         fwrite($fh, $stringData);
         fclose($fh); 
 }
 ?>

fwrite() returns the number of bytes written, or FALSE on error.
change fwrite($fh, $stringData);

$written = fwrite($fh, $stringData);
print $written;

now you can get weather your data is getting written or not.

or you may set file permission using php code
chmod(“/somedir/somefile”, 0755);//750 or do testing with 777 ,then revert to 750 or what your admin suggest

/* try this one */

 if (isset($_POST['data'])) {
             $stringData = $_POST['data'];
             $file = "ciao.txt"; 
             chmod($file, 0755);
             $fh = fopen($file, 'w') or die("can't open file");
             fwrite($fh, $stringData);
             $written = fwrite($fh, $stringData);
             print $written;
             fclose($fh); 
     }