Question

I am not good at with regular expressions, I need some help.

I have a link link this below:

http://www.mydomain.com/1/1/5/1/some-name-123-115194_7_9.jpg

What should be the regex to get with php like below:

http://www.mydomain.com/1/1/5/1/115194_7_9.jpg

This is what I have tried so far:

preg_match_all('/(\d+)(\w+)/', $str,$matches); 

Answer 1

Use preg_replace:

$url = "http://www.mydomain.com/1/1/5/1/some-name-123-115194_7_9.jpg";

echo preg_replace('#(.+/).+-(.+)#','$1$2',$url)

>>> http://www.mydomain.com/1/1/5/1/115194_7_9.jpg

Rexplanation:

(.+/)   # Match everything upto the last / and capture
.+-     # Match upto the last -
(.+)    # Match and capture everything else 
        # Replace with 
$1$2    # The first and second capture groups