Bug #80080 [Fbk->NoF]: stream_get_contents is never completed

Edit report at https://bugs.php.net/bug.php?id=80080&edit=1 ID: 80080 Updated by: php-bugs@lists.php.net Reported by: clark at electrobeat dot dk Summary: stream_get_contents is never completed -Status: Feedback +Status: No Feedback Type: Bug Package: Streams related Operating System: Debian 10 PHP Version: 7.3.22 Assigned To: cmb Private report: N New Comment: No feedback was provided. The bug is being suspended because we assume that you are no longer experiencing the problem. If this is not the case and you are able to provide the information that was requested earlier, please do so and change the status of the bug back to "Re-Opened". Thank you. Previous Comments: ------------------------------------------------------------------------ [2021-10-26 11:11:38] cmb@php.net Does still still happen to you with any of the actively supported PHP versions[1]? If so (which is what I assume), I think you need to make the pipes non-blocking (stream_set_blocking), and implement a proper stream_select(). [1] <https://www.php.net/supported-versions.php> ------------------------------------------------------------------------ [2020-09-09 09:22:42] clark at electrobeat dot dk Description: ------------ Sometimes I experience that stream_get_contents never completes executing In this case a PDF file is processed via poppler's pdftops. The PDF contains some errors though but when running the command directly in a terminal it completes and returns The code only prints "opened" but never reach "ouput done" The PDF can be found here https://docdro.id/fHlIxBS Test script: --------------- $syntax = '/var/bin/poppler-0.79.0/build/utils/pdftops file.pdf file.ps'; $pipes = []; $process = proc_open($syntax, [ 0 => ['pipe', 'r'], // stdin 1 => ['pipe', 'w'], // stdout 2 => ['pipe', 'w'] // stderr ], $pipes); fclose($pipes[0]); echo "opened\n"; $output = stream_get_contents($pipes[1]); echo "output done\n"; $stderr = stream_get_contents($pipes[2]); echo "err done\n"; foreach($pipes as $pipe){ if(is_resource($pipe)){ fclose($pipe); } } $exitcode = proc_close($process); echo "err: $stderr\n"; echo "out: $output\n"; Expected result: ---------------- opened output done err done err: output: Actual result: -------------- opened ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=80080&edit=1