Bug #78495 [Opn->Csd]: Allow any functions in ob_start user's callback

Edit report at https://bugs.php.net/bug.php?id=78495&edit=1 ID: 78495 Updated by: girgias@php.net Reported by: michael dot vorisek at email dot cz Summary: Allow any functions in ob_start user's callback -Status: Open +Status: Closed Type: Bug Package: Output Control Operating System: Any PHP Version: 7.3.9 -Assigned To: +Assigned To: girgias Block user comment: N Private report: N New Comment: Thank you for your bug report. This issue has already been fixed in the latest released version of PHP, which you can download at http://www.php.net/downloads.php Previous Comments: ------------------------------------------------------------------------ [2024-01-07 11:43:33] haszika80 at gmail dot com This has been fixed and produces OP's expected result. ------------------------------------------------------------------------ [2019-12-17 18:26:45] archon810 at gmail dot com Possibly related: https://bugs.php.net/bug.php?id=78565. ------------------------------------------------------------------------ [2019-09-05 12:34:35] michael dot vorisek at email dot cz Description: ------------ Currently the ob_start user's callback is executed in some special context and (at least) these functions behave not as expected: - ob_end_clean - exit The "ob_end_clean" is not supported as "Cannot use output buffering in output buffering display handlers". But the "exit" should be fully supported as there is no other way to interrupt the code execution and get shutdown handlers executed. Obviously the shutdown handlers should be able to output some data or manipulate with the output buffering. The desired execution flow be the following: standard code... -- ob handler called ---- stop ob handler execution if an exception is thrown or exit is called -- exit the ob handler context and - if an exception was thrown handle the exception as uncaught in global context and - exit the main execution, i.e. start processing shutdown handlers as if normal exit was called (if no exit was called yet) Test script: --------------- <?php // capture any unexpected output and exit execution ob_start(function($buffer) { ob_end_clean(); echo 'unexpected output: ' . $buffer . "\n"; exit; }, 1); // do some work on shutdown register_shutdown_function(function() { echo 'shutting down'; }); echo 'test_1'; echo 'test_2'; Expected result: ---------------- Fatal error: ob_end_clean(): Cannot use output buffering in output buffering display handlers in C:\Users\mvorisek\Desktop\x.php on line 5 shutting down Actual result: -------------- unexpected output: test_1 shutting down ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=78495&edit=1