Question

delete_define.php has the following code snippet:

<?php
    session_start();
?>

<form action="delete_now.php" target="upload_target"  onsubmit="return my_func_1();">
    <input type="submit" name="my_submit" class="my_submit" value="submit"/>
    <iframe id="upload_target" name="upload_target" src1111="#" style="width:0;height:0;border:0px solid #fff;"></iframe>
</form>

<script type="text/javascript">
    function my_func_1(){
       //alert("from within my_func() =" +<?php echo $_SESSION['my_session'];  ?>);
       alert(" my_func_1");
       return true;
    }

    function my_func_2(){
       alert("my_func_2 =" +<?php echo $_SESSION['my_session'];  ?>);
       return true;
    }
</script>

delete_now.php has:

<?php
    session_start();
    $_SESSION['my_session']=rand();
?>

<script type="text/javascript">   
    alert("from within delete_now.php = " +<?php echo $_SESSION['my_session'];  ?>);
    window.top.window.my_func_2();
</script>

The problem is my_func_2() does not give the same output for the session variable as the alert box in delete_now.php gives.

Why is that?

EDIT: CHANGED THE CODE SAID TO BE IN delete_define.php

Answer 1

That’s because when the delete_define.php was loading the Session var was one, then it’s become another, but in you JS stored previous value.

You should store session var into JS var, and then in JS in delete_now.php reset it with the fresh value.

How to refresh value from frame and other situations

Add to first php file’s JS something like:

var session_var = '<?php echo $_SESSION['my_session']; ?>';

And then in your delete_now.php’s JS:

parent.session_var = '<?php echo $_SESSION['my_session']; ?>';

And change function my_func to alert session_var JS variable.

Think so…

Explanation:

Then result page js will be:

function my_func_2(){
   alert("my_func_2 = 13513513513513");
   return true;
}

So when you call it, whatever is in the $_SESSION is, there will be old, static value.

Overall process description:

1. Load delete_define.php
2. Javascript var, containing actual filename initialized
3. From submits
4. Script delete_now.php is runing
5. Javascript var in main window refreshes
6. You call my_func_2() which use you global JS var, containing fresh filename.