Comapring two arrays

[micmac]

Hi,
I have the following two arrays:

$array_1 = array("1","3","4");

$array_2 = array("7");

I need to compare the two arrays to determine whether or not any of the values from $array_1 match that of $array_2. Obviously in this example they don't therfore i would need to echo the value 7 from $array_2.
Any ideas on how to achieve this?

Cheers

[konrad]

array_diff( $array_2, $array_1);