#25304 [Opn->Csd]: Implicit flush output in CLI falsely documented

ID: 25304 Updated by: nlopess@php.net Reported By: eru@php.net -Status: Open +Status: Closed Bug Type: Documentation problem Operating System: Linux RH 8.0 PHP Version: 4CVS-2003-08-28 (stable) New Comment: This was a PHP problem. It was already solved (at least in PHP 5). Closing... Previous Comments: ------------------------------------------------------------------------ [2003-11-02 09:29:59] betz@php.net php -r 'var_dump(ini_get("implicit_flush")); echo "test\n"; while (1);' doesn't output anything, even as implicit_flush is set to 1 in php-cli.ini. It seems only -n switch solves the problem, providing a php.ini with cli specific settings doesn't solve the flush prob. Is this the desired behaviour? (testing with 4.3.2, RH8) ------------------------------------------------------------------------ [2003-09-08 18:50:02] eru@php.net Ok, then this is an error in the documentation. The quoted paragraph should get removed alltogether, as it is plain wrong. ------------------------------------------------------------------------ [2003-09-08 15:48:00] iliaa@php.net 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 To avoid this problem use php-cli.ini with settings specific to CLI. ------------------------------------------------------------------------ [2003-08-28 15:49:48] eru@php.net Description: ------------ From http://de.php.net/manual/en/features.commandline.php: "It is desired that any output coming from print(), echo() and friends is immediately written to the output and not cached in any buffer. You still can use output buffering if you want to defer or manipulate standard output." Right, that's exactly what you expect, when using CLI, but this only works as long, as you don't have a php.ini, where output_buffering is enabled. The unfortunate thing is only, you can't change it in your script, because it's not PHP_INI_USER. The only way out, is either creating a php.ini for CLI only, which hardly every installation has, by declaring -n in your commandline, which isn't desirable either, when you rely on certain settings in php.ini or by passing a -d output_buffering=0 on the commandline, but I wasn't able to achieve this in a #!/usr/local/bin/php line at the top of the script. So, what we have here in my opinion is a contradictory situation, because implicit_flush = 1 is overruled by outbut_buffering = 4096. Reproduce code: --------------- <?php var_dump(ini_get("implicit_flush")); sleep(2); ?> Expected result: ---------------- string(1) "1" <2 seconds of waiting> Actual result: -------------- <2 seconds of waiting> string(1) "1" ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=25304&edit=1