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<?php $func = function($param, $block) { echo $block($param); }; $another_func = function() { $block = function($param) { echo $param; }; $func("Hello", $block); }; $another_func(); ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined variable $func in /in/kvuU4 on line 15 Fatal error: Uncaught Error: Value of type null is not callable in /in/kvuU4:15 Stack trace: #0 /in/kvuU4(18): {closure}() #1 {main} thrown in /in/kvuU4 on line 15
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: func in /in/kvuU4 on line 15 Fatal error: Uncaught Error: Function name must be a string in /in/kvuU4:15 Stack trace: #0 /in/kvuU4(18): {closure}() #1 {main} thrown in /in/kvuU4 on line 15
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 7.4.26
Fatal error: Uncaught Error: Function name must be a string in /in/kvuU4:15 Stack trace: #0 /in/kvuU4(18): {closure}() #1 {main} thrown in /in/kvuU4 on line 15
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Notice: Undefined variable: func in /in/kvuU4 on line 15 Fatal error: Function name must be a string in /in/kvuU4 on line 15
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/kvuU4 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/kvuU4 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/kvuU4 on line 3
Process exited with code 255.
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253.4 ms | 401 KiB | 385 Q