PHP if string contains URL isolate it

Question

In PHP, I need to be able to figure out if a string contains a URL. If there is a URL, I need to isolate it as another separate string.

For example: \"SESAC showin t

Answer 1

$test = "SESAC showin the Love! http://twitpic.com/1uk7fi";
$myURL= strstr ($test, "http");
echo $myURL; // prints http://twitpic.com/1uk7fi