#33296 [NEW]: popen (passthru etc.) doesn't work correct

From: thomas dot wetzler at siemens dot com Operating system: SUN OS PHP version: 4.3.10 PHP Bug Type: Program Execution Bug description: popen (passthru etc.) doesn't work correct Description: ------------ While sequentially opening and closing several processes via popen (or passthru, exec and '' command) php looses some processes. This takes place if, for instance, the user presses the reload-button on a website several times. With the coding below, you can reproduce the failure (takes place on commandline (php.exe) and in apache module (mod_php)). Reproduce code: --------------- #!/wir/webadmin/share/php4/bin/php # <? for ($i=0; $i<900; $i++) { $statement = "ls -l"; echo "\n\n$i***************************\n"; $handle = popen($statement, 'r'); echo "Subprozess: '$handle'; " . gettype($handle) . "\n"; while (!feof($handle)) { echo fread($handle, 8192); } pclose($handle); } ?> programcall: <progname> > <resultfile> Expected result: ---------------- Within the result-file, there should be 900 times the same result from the system command (here ls -l command). 255*************************** Subprozess: 'Resource id #259'; resource total 2526 -rw-r--r-- 1 webadmin oracle 572135 Jun 10 09:52 _test1.txt drwxr-xr-x 2 wir oracle 96 May 2 15:27 mail -rw-r--r-- 1 wir oracle 258956 Jun 10 10:42 test -rwxrwx--- 1 wir oracle 698 Jun 10 10:41 test.php -rw-r--r-- 1 webadmin oracle 105326 Jun 10 09:52 test1 -rwxrwx--- 1 wir oracle 656 Jun 10 09:48 test1.php -rwxr-x--- 1 wir oracle 321 Jun 10 10:43 thomas.php -rw-r--r-- 1 wir oracle 148274 Jun 10 10:43 thw.txt Actual result: -------------- Some results are missing. The same programm written in perl or shellscript is working correct. -rwxr-x--- 1 wir oracle 321 Jun 10 10:43 thomas.php -rw-r--r-- 1 wir oracle 148274 Jun 10 10:43 thw.txt 256*************************** Subprozess: 'Resource id #260'; resource 257*************************** Subprozess: 'Resource id #261'; resource total 2526 -rw-r--r-- 1 webadmin oracle 572135 Jun 10 09:52 _test1.txt drwxr-xr-x 2 wir oracle 96 May -- Edit bug report at http://bugs.php.net/?id=33296&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=33296&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=33296&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=33296&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=33296&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=33296&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=33296&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=33296&r=needscript Try newer version: http://bugs.php.net/fix.php?id=33296&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=33296&r=support Expected behavior: http://bugs.php.net/fix.php?id=33296&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=33296&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=33296&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=33296&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=33296&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=33296&r=dst IIS Stability: http://bugs.php.net/fix.php?id=33296&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=33296&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=33296&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=33296&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=33296&r=mysqlcfg