Bug #68075 [Opn->Nab]: Functions defined in closures may not be called before definition

Edit report at https://bugs.php.net/bug.php?id=68075&edit=1 ID: 68075 Updated by: requinix@php.net Reported by: fieryprophet at yahoo dot com Summary: Functions defined in closures may not be called before definition -Status: Open +Status: Not a bug Type: Bug Package: Scripting Engine problem Operating System: All PHP Version: Irrelevant Block user comment: N Private report: N New Comment: > PHP allows calls to functions that have not yet been defined as long as they > are defined at some point in the script. That's only part of the rule. The rest is "...and are not defined conditionally." http://php.net/manual/en/functions.user-defined.php Anything conditional does not (and cannot) get that kind of special "look ahead" treatment and will be evaluated like any other statement; same thing happens in a closure, regular function, if, switch, etc. Previous Comments: ------------------------------------------------------------------------ [2014-09-22 17:26:48] fieryprophet at yahoo dot com Description: ------------ PHP allows calls to functions that have not yet been defined as long as they are defined at some point in the script. However, this behavior is not consistent when applied to Closures, as function calls within a closure will fail if they are not defined before they are made even if the function definition is contained within the same closure. If the function in question is defined outside of a closure but after the closure is created, the script will also proceed as expected. Test script: --------------- test(); function test(){ echo "Test works\r\n"; } //output: Test works $closure = function(){ closure_test(); function closure_test(){ echo "Closure test works\r\n"; } }; $closure(); //expected output: Closure test works //actual output: Fatal error: Call to undefined function closure_test() Expected result: ---------------- Test works Closure test works Actual result: -------------- Test works Fatal error: Call to undefined function closure_test() ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=68075&edit=1