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<?php // string, null, bool, float, largest specified previous index function isIndexedArray($array) { return !(bool)count(array_filter(array_keys($array), 'is_string')); } assert(isIndexedArray(NULL)); assert(isIndexedArray(['a']));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, null given in /in/7RJNn:5 Stack trace: #0 /in/7RJNn(5): array_keys(NULL) #1 /in/7RJNn(8): isIndexedArray(NULL) #2 {main} thrown in /in/7RJNn on line 5
Process exited with code 255.

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