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Bug #54637 Null src value causes script to run twice
Submitted: 2011-04-29 21:38 UTC Modified: 2011-04-30 18:48 UTC
From: thomas dot roberts at texaswww dot net Assigned:
Status: Not a bug Package: Scripting Engine problem
PHP Version: 5.2.17 OS: Debian
Private report: No CVE-ID: None
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From: thomas dot roberts at texaswww dot net
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 [2011-04-29 21:38 UTC] thomas dot roberts at texaswww dot net 
Description:
------------
PHP Version 5.2.6-1+lenny10
System Linux mycomputer 2.6.26-2-amd64 #1 SMP Tue Jan 25 05:59:43 UTC 2011 x86_64

Output:
1

Page Source:
<html><head><script type='text/javascript' src=''></script></head><body>2</body></html>

* Leaving the script src='' (See code below) causes the entire script to run twice, thus causing the session variable to double increment.
* The page source will show a value +1 higher than displayed value
* [Refresh] will output '3', then '5', ... with the Page Source showing '4', '6', ...
* Adding a valid src file prevents the bug

Test script:
---------------
<?php
session_start();
++$_SESSION['count'];
echo "<html><head>";
echo "<script type='text/javascript' src=''></script>";
echo "</head><body>";
echo $_SESSION['count'];
echo "</body></html>";
?>

Expected result:
----------------
Output:
1

Page Source:
<html><head><script type='text/javascript' src=''></script></head><body>1</body></html>


The script should only run once.  The page source should match the actual page output.

Actual result:
--------------
Output:
1

Page Source:
<html><head><script type='text/javascript' src=''></script></head><body>2</body></html>

[Page Refresh]

Output:
3

Page Source:
<html><head><script type='text/javascript' src=''></script></head><body>4</body></html>

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 [2011-04-29 22:13 UTC] felipecg00 at gmail dot com 
Well it's just sending another request to the same address.

Not a bug neither PHP related I guess.
 [2011-04-29 22:17 UTC] thomas dot roberts at texaswww dot net 
Makes sense.  Thank you.
 [2011-04-30 02:49 UTC] cataphract@php.net
-Status: Open +Status: Bogus
 [2011-04-30 02:49 UTC] cataphract@php.net 
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions.  Due to the volume
of reports we can not explain in detail here why your report is not
a bug.  The support channels will be able to provide an explanation
for you.

Thank you for your interest in PHP.
 
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