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<?php function bind($cb) { $bound_args = func_get_args(); array_shift($bound_args); $bound_exec = function () use ($bound_args, $cb) { $args = $bound_args + func_get_args(); var_dump($args); call_user_func_array($cb, $args); }; return $bound_exec; } $fn = bind(function ($a, $b) { return $a . $b; }, 'hello '); echo $fn('world');
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { [0]=> string(6) "hello " } Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed in /in/CUU6u on line 9 and exactly 2 expected in /in/CUU6u:13 Stack trace: #0 /in/CUU6u(9): {closure}('hello ') #1 /in/CUU6u(14): {closure}('world') #2 {main} thrown in /in/CUU6u on line 13
Process exited with code 255.
Output for 7.0.0 - 7.0.33
array(1) { [0]=> string(6) "hello " } Warning: Missing argument 2 for {closure}(), called in /in/CUU6u on line 9 and defined in /in/CUU6u on line 13 Notice: Undefined variable: b in /in/CUU6u on line 13
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
array(1) { [0]=> string(6) "hello " } Warning: Missing argument 2 for {closure}() in /in/CUU6u on line 13 Notice: Undefined variable: b in /in/CUU6u on line 13
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/CUU6u on line 6
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/CUU6u on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/CUU6u on line 6
Process exited with code 255.
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