Fast search

Looking for suggestions on the most compute-efficient way to search variable-length strings (~200 characters) for the occurrence of one of about 100 possible needles. In other words: $needles = array ( 1 => "Hello Jim" , 2 => "Yellow Banana" , 3 => "Red Car", ... etc .... (100 elements) $haystack = "Once upon a time there was a programming language that everyone loved. Its name was PHP, and the people that worked with it also liked Yellow Bananas. One day..."; Now perhaps I'm blind, but I can't see an obvious string or array function that simply allows you to use an array as a needle while searching a string haystack. What I'm really looking for is something like the reverse of in_array. The obvious thing would be to loop through the needles and run substr_count on the haystack... But is there a faster way? ...Rene