PHP Regex: Pattern to match "url()"

Question

This Regex:

$pattern = '/url\(([^)]+)\)/';

matches everything between url( ... ) in CSS files. The problem: If there are quotes, like this: url('...'), they occur in the returned phrase as well.

How to return a phrase without quotes, if there are any?

The same story over and over again. Someone asks "how to parse <some structured language> with regexes". Someone comments "regexes are not the tool, use a parser". Someone answers with a half-baked regex that kinda works for a particular case. Many thanks, answer accepted, end of story. — georg
– georg, Commented Oct 28, 2014 at 10:58

vks · Accepted Answer · 2014-10-28 10:50:27Z

1

url\(['"]?([^)]+?)['"]?\)

This should do it for you.Make ' or " optional.

See demo.

http://regex101.com/r/sU3fA2/27

edited Oct 28, 2014 at 10:50

answered Oct 28, 2014 at 10:41

vks

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12 Comments

Liglo App Over a year ago

It's OK, it is our own project so we take care about such things. The answer is absolutely perfect for my needs. Will accept it as soon as SO allows me to :)

vks Over a year ago

@BarthZalewski you can refer to demo as well.Now it handles all the cases.

vks Over a year ago

@AvinashRaj now it takes care of your concern too :)

Liglo App Over a year ago

I think exactly like vks. If it matches misspelled URI-s, it's even better. It's not a bug, it's a feature.

HamZa Over a year ago

Oh, I forgot something. You might need to use str_replace() after all. demo. Here's a regex that works and detects even broken quotes.

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