Online PHP editor | refs for 0aHns

<?php // Everything is associative array in PHP. Ideal question to ask is if it is sequential // Secondly, going through entire list of items in array is unnecessary function isSequentialArray($array) { return !(bool)count(array_filter(array_keys($array), 'is_string')); } var_dump(isSequentialArray([])); // true/undefined var_dump(isSequentialArray(['a'])); // false var_dump(isAssoc([])); // undefined 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