extract email addresses

<?php

function extract_emails_from($string){
  preg_match_all("/[\._a-zA-Z0-9-]+@[\._a-zA-Z0-9-]+/i", $string, $matches);
  return $matches[0];
}

$text = "blah blah blah [email protected] blah blah blah [email protected]";

$emails = extract_emails_from($text);

print(implode("\n", $emails));

?>

Context: http://forum.textdrive.com/viewtopic.php?pid=46783