Question

I looked everywhere for an answer, but it seems I cannot get my head around preg_match functionality. I want to preg_match the link below where only the numbers part (the ID) is dynamic.

Link:

http://video.cnbc.com/gallery/?video=3000024508

Here goes what I have come up until now:

preg_match( '/^http://video.cnbc.com/gallery/?video=([0-9_-]/', $content )

But it won’t work.

Answer 1

 preg_match('#^http://video\.cnbc\.com/gallery/\?video=([0-9_-]+)$#', $content);

RegExr Demo

Besides problems that others mentioned (escaping the ? and . and using # instead of /) you are also missing a + from after the number group ([0-9_-]), which means that group can be repeated.

If you need to check if a string includes this kind of link or not, remove ^ and $:

preg_match('#http://video\.cnbc\.com/gallery/\?video=([0-9_-]+)#', $content);