Bug #68772 [Com]: calling flush() after fastcgi_finish_request() exits PHP without errors or warn

Edit report at https://bugs.php.net/bug.php?id=68772&edit=1 ID: 68772 Comment by: Pikamander2 at gmail dot com Reported by: rikurr at gmail dot com Summary: calling flush() after fastcgi_finish_request() exits PHP without errors or warn Status: Not a bug Type: Bug Package: Output Control Operating System: Linux PHP Version: 5.4.36 Block user comment: N Private report: N New Comment: A simple fix is to call ignore_user_abort(true) right before or after the fastcgi_finish_request call: ignore_user_abort(true); fastcgi_finish_request(); Previous Comments: ------------------------------------------------------------------------ [2015-01-29 14:11:41] mike@php.net flush() on the closed fcgi output stream triggers an aborted_connection, so you've got to set ignore_user_abort to continue script execution. ------------------------------------------------------------------------ [2015-01-09 01:32:42] rikurr at gmail dot com Description: ------------ At least explicit flushing after calling fastcgi_finish_request() will exit PHP without any errors or warnings. I found this behavior while writing a code that: 1) calls fastcgi_finish_request() and based on parameters either 1.a) continues processing in the background (asynchronous) 1.b) streams the processsing logs to the screen (synchronous) 2) has a generic logging method that both echoes+flushes(streaming) and writes the logs to a file. As a workaround I will have have to check the parameter condition during logging to not to flush if fastcgi_finish_request() was called. Related: http://stackoverflow.com/questions/14191947/php-fpm-fastcgi-finish-request-reliable/27847878#27847878 Test script: --------------- <?php function writestamp($case, $file){ file_put_contents($file, "". $case . ": " . time() . "" . PHP_EOL, FILE_APPEND); } $file = tempnam(sys_get_temp_dir(), 'flushbug_'); echo 'Writing 4 timestamps to: '.$file; // this one gets called writestamp('1', $file); // and this register_shutdown_function('writestamp', '4', $file); // finish the request fastcgi_finish_request(); // as does this writestamp('2', $file); // but this one does NOT - calling flush() after fastcgi_finish_request() exits PHP without errors or warnings flush(); writestamp('3', $file); Expected result: ---------------- PHP should continue processing the script if I flush() output to the client after calling fastcgi_finish_request() and output 4 lines to the temporary file: 1: 1420766961 2: 1420766961 3: 1420766961 4: 1420766961 Actual result: -------------- PHP exits the process without, at least to my knowledge, errors or warnings and only outputs 3 lines to the temporary file: root@afa63474201a:/# cat /tmp/flushbug_XCsRsu 1: 1420766961 2: 1420766961 4: 1420766961 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=68772&edit=1