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<?php class hello { function world($value) { return $value * 2; } } $test = [1, 2, 3]; $result = array_map('hello::world', $test); var_dump($result);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, non-static method hello::world() cannot be called statically in /in/CJBEh:9 Stack trace: #0 /in/CJBEh(9): array_map('hello::world', Array) #1 {main} thrown in /in/CJBEh on line 9
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, non-static method hello::world() cannot be called statically in /in/CJBEh:9 Stack trace: #0 /in/CJBEh(9): array_map('hello::world', Array) #1 {main} thrown in /in/CJBEh on line 9
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, non-static method hello::world() cannot be called statically in /in/CJBEh:9 Stack trace: #0 /in/CJBEh(9): array_map('hello::world', Array) #1 {main} thrown in /in/CJBEh on line 9
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: array_map() expects parameter 1 to be a valid callback, non-static method hello::world() should not be called statically in /in/CJBEh on line 9 array(3) { [0]=> int(2) [1]=> int(4) [2]=> int(6) }
Output for 7.3.32 - 7.3.33
array(3) { [0]=> int(2) [1]=> int(4) [2]=> int(6) }
Output for 5.6.38
Strict Standards: array_map() expects parameter 1 to be a valid callback, non-static method hello::world() should not be called statically in /in/CJBEh on line 9 array(3) { [0]=> int(2) [1]=> int(4) [2]=> int(6) }

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