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

From: Operating system: Debian PHP version: 5.2.17 Package: Scripting Engine problem Bug Type: Bug Bug description:Null src value causes script to run twice 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 bug report at http://bugs.php.net/bug.php?id=54637&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=54637&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=54637&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=54637&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=54637&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=54637&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=54637&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=54637&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=54637&r=needscript Try newer version: http://bugs.php.net/fix.php?id=54637&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=54637&r=support Expected behavior: http://bugs.php.net/fix.php?id=54637&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=54637&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=54637&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=54637&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=54637&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=54637&r=dst IIS Stability: http://bugs.php.net/fix.php?id=54637&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=54637&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=54637&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=54637&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=54637&r=mysqlcfg