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<?php $a = ['a', 'b', 'c']; $quoted = array_map($a, function($e) { return "'".$e."'";}); echo implode(",", $quoted);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, array callback must have exactly two members in /in/P1vH2:3 Stack trace: #0 /in/P1vH2(3): array_map(Array, Object(Closure)) #1 {main} thrown in /in/P1vH2 on line 3
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, array callback must have exactly two members in /in/P1vH2:3 Stack trace: #0 /in/P1vH2(3): array_map(Array, Object(Closure)) #1 {main} thrown in /in/P1vH2 on line 3
Process exited with code 255.
Output for 8.1.0 - 8.1.28
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, array must have exactly two members in /in/P1vH2:3 Stack trace: #0 /in/P1vH2(3): array_map(Array, Object(Closure)) #1 {main} thrown in /in/P1vH2 on line 3
Process exited with code 255.
Output for 8.0.0 - 8.0.30
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback, array must have exactly two members in /in/P1vH2:3 Stack trace: #0 /in/P1vH2(3): array_map(Array, Object(Closure)) #1 {main} thrown in /in/P1vH2 on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_map() expects parameter 1 to be a valid callback, array must have exactly two members in /in/P1vH2 on line 3 Warning: implode(): Invalid arguments passed in /in/P1vH2 on line 4
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/P1vH2 on line 2
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 '[' in /in/P1vH2 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/P1vH2 on line 2
Process exited with code 255.

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