3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $zero = 0; // global scope $f1 = function() use ($zero) { $one = 1; // third-level closure scope of f4 $f2 = function() use ($zero, $one) { // $two = 2; // second-level closure scope of f4 // $f3 = function() use ($zero, $one, $two) { // $three = 3; // first-level closure scope of f4 // $f4 = function() use ($zero, $one, $two, $three) { // $four = 4; // local scope of f4 // echo $zero + $one + $two + $three + $four; // } // } }; }; $f4();
based on Qg1n9
Output for 7.0.0 - 7.1.0
Notice: Undefined variable: f4 in /in/t6Oc8 on line 16 Fatal error: Uncaught Error: Function name must be a string in /in/t6Oc8:16 Stack trace: #0 {main} thrown in /in/t6Oc8 on line 16
Process exited with code 255.
Output for 5.3.0 - 5.6.28, hhvm-3.12.0
Notice: Undefined variable: f4 in /in/t6Oc8 on line 16 Fatal error: Function name must be a string in /in/t6Oc8 on line 16
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/t6Oc8 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/t6Oc8 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/t6Oc8 on line 3
Process exited with code 255.