Question

I need a regex that matches multiple things.

What im trying to do, is send a mail if the url doesnt contain certain words.
(.xml, .jpg, .ico)

My try, that didnt work:

if (!preg_match("/(\.xml)|(\.jpg)|(\.ico)/", $url))
mail("[e-mail]", "the url doesnt contain .xml, .jpg or .ico", $url);

Answer 1

You’re almost there. Enclose the three extension types in one () group separated by | and keep the . outside of it. Also, I’ve added a $ to the end to indicate that the file extension occurs as the last thing in the string so something like example.xml.com doesn’t accidentally match.

if (!preg_match("/\.(xml|jpg|ico)$/", $url)) {

}