array_merge recursive

gistfile1.aw

<?php
$a = array(
	'asdf' => array(
		'qqqq' => 'pppp',
		'wwww' => 'oooo',
		'eeee' => 'iiii'
	),
	'default' => 'yes'
);

$b = array(
	'asdf' => array(
		'qqqq' => 'a',
	),
	'default' => 'overwriten'
);


print_r(array_merge($a, $b));
print_r(array_merge_recursive($a, $b));

function merge($arr1, $arr2 = null) {
	$args = func_get_args();

	$r = (array)current($args);
	while (($arg = next($args)) !== false) {
		foreach ((array)$arg as $key => $val)	 {
			if (!empty($r[$key]) && is_array($r[$key]) && is_array($val)) {
				$r[$key] = merge($r[$key], $val);
			} elseif (is_int($key)) {
				$r[] = $val;
			} else {
				$r[$key] = $val;
			}
		}
	}
	return $r;
}

print_r(merge($a, $b));