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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')); } $a3 = array_fill(1, 6, 0) + array(0); print_r($a3); var_dump(isIndexedArray('a')); // false var_dump(isSequentialArray([])); // true/undefined var_dump(isSequentialArray(['a'])); // true var_dump(isSequentialArray(['a' => 1])); // false var_dump(isSequentialArray(array(0 => 'a', 1 => 'b'))); // true var_dump(isSequentialArray(array(0 => 'a', 5 => 'b'))); // true var_dump(isSequentialArray(array('a', 'b', 'c'))); // false var_dump(isSequentialArray(array("0" => 'a', "1" => 'b', "2" => 'c'))); // false var_dump(isSequentialArray(array("1" => 'a', "0" => 'b', "2" => 'c'))); // true var_dump(isSequentialArray(array("a" => 'a', "b" => 'b', "c" => 'c'))); // true
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [1] => 0 [2] => 0 [3] => 0 [4] => 0 [5] => 0 [6] => 0 [0] => 0 ) Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, string given in /in/jEhUg:5 Stack trace: #0 /in/jEhUg(5): array_keys('a') #1 /in/jEhUg(11): isIndexedArray('a') #2 {main} thrown in /in/jEhUg on line 5
Process exited with code 255.

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