Bug #54637 [Opn]: Null src value causes script to run twice

Edit report at http://bugs.php.net/bug.php?id=54637&edit=1 ID: 54637 User updated by: thomas dot roberts at texaswww dot net Reported by: thomas dot roberts at texaswww dot net Summary: Null src value causes script to run twice Status: Open Type: Bug Package: Scripting Engine problem Operating System: Debian PHP Version: 5.2.17 Block user comment: N Private report: N New Comment: Makes sense. Thank you. Previous Comments: ------------------------------------------------------------------------ [2011-04-29 22:13:53] 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 21:38:53] 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> ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=54637&edit=1