#24851 [NEW]: fread on popen slow pipe return only part of content

From: artem at osp dot ru Operating system: Linux 2.2.25 PHP version: 4.3.2 PHP Bug Type: Filesystem function related Bug description: fread on popen slow pipe return only part of content Description: ------------ on slow pipes opened by popen fread return data to script before length bytes have been read or EOF (end of file) reached. may be it's not bug, but feature, but in this case, this feature must be documented. may be it's double #19783 Reproduce code: --------------- <?php ob_implicit_flush(1); echo "<b>".date("r")."</b><br>\n"; $fp=popen('for i in 1 2 3 4 5 6 7 8 9; do echo $i ; sleep 1 ; done',"r"); while(!feof($fp)) { $s=fread($fp,100000); echo "<b>".date("r")."</b><pre>$s</pre>\n"; } pclose($fp); ?> Expected result: ---------------- Tue, 29 Jul 2003 14:27:51 +0400 Tue, 29 Jul 2003 14:27:60 +0400 1 2 3 4 5 6 7 8 9 Actual result: -------------- Tue, 29 Jul 2003 14:26:01 +0400 Tue, 29 Jul 2003 14:26:01 +0400 1 Tue, 29 Jul 2003 14:26:02 +0400 2 Tue, 29 Jul 2003 14:26:03 +0400 3 Tue, 29 Jul 2003 14:26:04 +0400 4 Tue, 29 Jul 2003 14:26:05 +0400 5 Tue, 29 Jul 2003 14:26:06 +0400 6 Tue, 29 Jul 2003 14:26:07 +0400 7 Tue, 29 Jul 2003 14:26:08 +0400 8 Tue, 29 Jul 2003 14:26:09 +0400 9 Tue, 29 Jul 2003 14:26:10 +0400 -- Edit bug report at http://bugs.php.net/?id=24851&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=24851&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=24851&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=24851&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=24851&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=24851&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=24851&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=24851&r=support Expected behavior: http://bugs.php.net/fix.php?id=24851&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=24851&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=24851&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=24851&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=24851&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=24851&r=dst IIS Stability: http://bugs.php.net/fix.php?id=24851&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=24851&r=gnused