[PHP] Check For Associative Array

is-array-associative.php

<?php
/**
 * Helper function that checks an array for string keys aka an associative array.
 *
 * @author Davey Jacobson <daveyjake21 [at] geemail [dot] com>
 *
 * @param array $array Array to check.
 *
 * @return bool True if associative. False if not.
 */
function is_array_associative( array $array ) {
    return count( array_filter( array_keys( $array ), 'is_string' ) ) > 0;
}