<?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
preferences:
56.72 ms | 402 KiB | 5 Q