Array Functions

array_change_key_case array_chunk array_column array_combine array_count_values array_diff array_diff_assoc array_diff_key array_diff_uassoc array_diff_ukey array_fill array_fill_keys array_filter array_flip array_intersect array_intersect_assoc array_intersect_key array_intersect_uassoc array_intersect_ukey array_is_list array_key_exists array_key_first array_key_last array_keys array_map array_merge array_merge_recursive array_multisort array_pad array_pop array_product array_push array_rand array_reduce array_replace array_replace_recursive array_reverse array_search array_shift array_slice array_splice array_sum array_udiff array_udiff_assoc array_udiff_uassoc array_uintersect array_uintersect_assoc array_uintersect_uassoc array_unique array_unshift array_values array_walk array_walk_recursive arsort asort compact count current end extract in_array key key_exists krsort ksort natcasesort natsort next pos prev range reset rsort shuffle sizeof sort uasort uksort usort

key_exists

reactphp/socket

Supported Versions: PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8

Alias array_key_exists