array function or string function to compare?

[yoki]

Ok Say I have two arrays:

array1('Bill, Gates, Microsoft, Seattle, USA');
array2('Microsoft,Seattle, USA', 'Microsoft, Washington, USA');

I need to match a portion of array 1 which is: Microsoft,Seattle,USA with array2.

Is there a function that can compare this and return true if a portion of array 1 is in array 2? In this case we find 'Microsoft,Seattle,USA' in array 1 and array 2.

[makingphpwork]

Something like this..

<?php
$array1 ='Bill, Gates,Microsoft,Seattle';
$explode1 = explode(',', $array1);
$array2 ='Microsoft,Seattle,USA,Microsoft,Washington,USA';
$explode2 = explode(',', $array2);

foreach($explode1 as $element1) {
  if (in_array($element1, $explode2)) {
       $got=TRUE;

 }
}

?>

[Roger_Ramjet]

array intersect() does tis for you. There are several other array comparison functions that can perform complex comparisons including keys, recursion through call-backs and more.