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<?php $file_extensions = "fdsa fdsa , ,f,f,f"; var_dump(array_map('trim', $file_extensions));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: array_map(): Argument #2 ($array) must be of type array, string given in /in/UUpQf:3 Stack trace: #0 /in/UUpQf(3): array_map('trim', 'fdsa fdsa , ,f,...') #1 {main} thrown in /in/UUpQf on line 3
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_map(): Expected parameter 2 to be an array, string given in /in/UUpQf on line 3 NULL
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33
Warning: array_map(): Argument #2 should be an array in /in/UUpQf on line 3 NULL
Output for 4.3.0 - 4.3.1
Warning: array_map() [http://www.php.net/function.array-map]: Argument #2 should be an array in /in/UUpQf on line 3 NULL

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246.52 ms | 402 KiB | 342 Q