Req #63538 [Opn->Asn]: "Call to undefined function" should be catchable

Edit report at https://bugs.php.net/bug.php?id=63538&edit=1 ID: 63538 Updated by: yohgaki@php.net Reported by: indeyets@php.net Summary: "Call to undefined function" should be catchable -Status: Open +Status: Assigned Type: Feature/Change Request Package: Scripting Engine problem Operating System: any PHP Version: 5.5.0alpha1 -Assigned To: +Assigned To: yohgaki Block user comment: N Private report: N New Comment: Old PHPs were able to catch E_ERROR. I always think E_ERROR should be able to catch by user defined error handler. The reason why E_ERROR made uncatchable is there were many users that shot their own foot by not terminating execution. However, user should be able to own foot by catching E_ERROR. I think PHP should give chance user to display 500 page. Previous Comments: ------------------------------------------------------------------------ [2013-04-30 11:28:07] jevon at jevon dot org In particular, this would allow developers to handle undefined functions in batch scripts and the like. Since one can catch undefined classes (through an autoloader), undefined class methods (through __call() and __callStatic()) and undefined variables (through set_error_handler()), why shouldn't we be able to catch undefined functions? ------------------------------------------------------------------------ [2012-11-29 10:37:38] indeyets@php.net bensor987 that's a separate issue. autoloader is a specific solution, while ability to handle such error is more generic ------------------------------------------------------------------------ [2012-11-29 10:15:05] bensor987 at neuf dot fr I think it is better to add a function autoloader, instead of just catching this error. ------------------------------------------------------------------------ [2012-11-23 19:37:12] lubosdz at hotmail dot com What about function_exists() ? set_error_handler(function($errno , $errstr){ if (!function_exists('there_is_no_me')) { function there_is_no_me(){ echo "Here am I!\n"; } } }); lubosdz ------------------------------------------------------------------------ [2012-11-16 10:13:02] indeyets@php.net Description: ------------ At the moment, call to undefined function results as "Fatal error". On the other hand, it can be easily handled programmatically either by including required file or just defining function dynamically. Test script: --------------- <?php set_error_handler(function($errno , $errstr){ if (strpos($errstr, 'Call to undefined function there_is_no_me()') === 0) { function there_is_no_me() { echo "Here am I!\n"; } } }); there_is_no_me(); Expected result: ---------------- Here am I! Actual result: -------------- Fatal error: Call to undefined function there_is_no_me() ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=63538&edit=1