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<?php function apply($a, $f) { foreach ($a as $k => $v) { $f($k, $v); } } $f = function ($v, $k) { var_dump($k, $v); }; $g = function ($v) { var_dump($v); }; $h = 'strlen'; $a = ['a' => 'foo', 'b' => 'noodle', 'c' => 'derp']; apply($a, $f); apply($a, $g); apply($a, $h);
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
string(3) "foo" string(1) "a" string(6) "noodle" string(1) "b" string(4) "derp" string(1) "c" string(1) "a" string(1) "b" string(1) "c" Fatal error: Uncaught ArgumentCountError: strlen() expects exactly 1 argument, 2 given in /in/Ye37u:6 Stack trace: #0 /in/Ye37u(6): strlen('a', 'foo') #1 /in/Ye37u(21): apply(Array, 'strlen') #2 {main} thrown in /in/Ye37u on line 6
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
string(3) "foo" string(1) "a" string(6) "noodle" string(1) "b" string(4) "derp" string(1) "c" string(1) "a" string(1) "b" string(1) "c" Warning: strlen() expects exactly 1 parameter, 2 given in /in/Ye37u on line 6 Warning: strlen() expects exactly 1 parameter, 2 given in /in/Ye37u on line 6 Warning: strlen() expects exactly 1 parameter, 2 given in /in/Ye37u on line 6
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/Ye37u on line 18
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/Ye37u on line 10
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/Ye37u on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Ye37u on line 10
Process exited with code 255.
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