Posts tagged array

PHP array_keys_exist function

sample:

/* test */
$result = array_keys_exist (array('key1', 'key2'), $_GET);

/**
 * result
 * will be true if key1 and key2 are exist in $_GET
 */

Code:

/**
 * Validates the given key(s) if exist in array
 * @author Fatih Piristine <v-fpiris@teknober.com>
 * @param array $needle
 * @param array $haystack
 * @return boolean
 */
function tws_array_keys_exist(array $needles, array $haystack) {
    foreach ($needles as $needle) {
        if (!isset($haystack[$needle])) {
            return false;
        }
    }

    return true;
}

note: you can replace isset with array_key_exists function if you need to check the keys those have null values.