#24851 [Opn->Bgs]: fread on popen slow pipe return only part of content

ID: 24851 Updated by: wez@php.net Reported By: artem at osp dot ru -Status: Open +Status: Bogus Bug Type: Filesystem function related Operating System: Linux 2.2.25 PHP Version: 4.3.2 New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php From: http://uk.php.net/fread Note: When reading from network streams or pipes, such as those returned when reading remote files or from popen() and proc_open(), reading will stop after a packet is available. This means that you should collect the data together in chunks as shown in the example below. Previous Comments: ------------------------------------------------------------------------ [2003-07-29 05:40:07] artem at osp dot ru 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 this bug report at http://bugs.php.net/?id=24851&edit=1