Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

Troubleshooting
Research
Professional Opinions
Ask a Question
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

troubleshooting Question

regular expression help, validate url and extension

Avatar of HeadAcheMike
HeadAcheMike asked on
PHP
3 Comments1 Solution1614 ViewsLast Modified:
hi,

i have an expression that validates URLs but i need it modified so that it only allows certain file extenstions, or if you have another fresh example that will do fine

i need an expression that will only allow a url with a file name with one of the following extensions, jpg, jpeg, gif, png

for example

http://domain.com/picture.jpg - valid
http://domain.com/picture.php - invalid

http://domain.co.uk/folder/picture.jpg - valid
http://domain.co.uk/folder/ - invalid

etc etc

here is the function i currently have:

function valiurl($url) {
 if (eregi("^((ht|f)tp://)((([a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3}))|(([0-9]{1,3}\.){3}([0-9]{1,3})))((/|\?)[a-z0-9~#%&'_\+=:\?\.-]*)*)$", $url)) {
  return true;
 }
 else {
  return false;
 }
}

any help will be much appreciated, thank you
ASKER CERTIFIED SOLUTION
Avatar of Marcus Bointon
Marcus BointonFlag of France image

Our community of experts have been thoroughly vetted for their expertise and industry experience.

Commented:
This problem has been solved!
Unlock 1 Answer and 3 Comments.
See Answers