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<?php function test($array) { try { return isDictionary($array); } catch (Exception $e) { echo $e->getMessage(); return 'error'; } } function isDictionary($array) { return !(bool)count(array_filter(array_keys($array), 'is_string')); } $arr = null; var_dump(test($arr));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, null given in /in/hWHq8:17 Stack trace: #0 /in/hWHq8(17): array_keys(NULL) #1 /in/hWHq8(7): isDictionary(NULL) #2 /in/hWHq8(23): test(NULL) #3 {main} thrown in /in/hWHq8 on line 17
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, null given in /in/hWHq8:17 Stack trace: #0 /in/hWHq8(17): array_keys(NULL) #1 /in/hWHq8(7): isDictionary(NULL) #2 /in/hWHq8(23): test(NULL) #3 {main} thrown in /in/hWHq8 on line 17
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_keys() expects parameter 1 to be array, null given in /in/hWHq8 on line 17 Warning: array_filter() expects parameter 1 to be array, null given in /in/hWHq8 on line 17 Warning: count(): Parameter must be an array or an object that implements Countable in /in/hWHq8 on line 17 bool(true)
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Warning: array_keys() expects parameter 1 to be array, null given in /in/hWHq8 on line 17 Warning: array_filter() expects parameter 1 to be array, null given in /in/hWHq8 on line 17 bool(true)
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