php preg_replace relative to absolute in url css

Question

I am trying to find a regex to convert relative url in css code 'url()'. So far this is what I have:

$domain = "http://example.com/";
$html = "url(1.css), url(' 1.css'), url( \"1.css\")";

$rep['/url(\s*)\((\s*)"(\s*)(?!https?:\/\/)(?!data:)(?!#)/i'] = 'url("'.$domain;
$rep["/url(\s*)\((\s*)'(\s*)(?!https?:\/\/)(?!data:)(?!#)/i"] = "url('".$domain;

$html = preg_replace(
    array_keys($rep),
    array_values($rep),
    $html
);
echo $html;

Current Output:

url(1.css), url('http://example.com/1.css'), url("http://example.com/1.css")

Desired Output:

url(http://example.com/1.css), url('http://example.com/1.css'), url("http://example.com/1.css")

you can save only one entry in replace array $rep['/url(\s*)\((\s*)["\']?(\s*)(?!https?:\/\/)(?!data:)(?!#)/i'] = 'url("'.$domain; — splash58
– splash58, Commented Apr 17, 2017 at 11:13
@spash58, this will give url("example.com/1.css), url("example.com/1.css'), url("example.com/1.css"). Notice that " appear in all cases. — Shan Lim
– Shan Lim, Commented Apr 17, 2017 at 11:21

Sahil Gulati · Accepted Answer · 2017-04-17 11:56:49Z

1

Are you expecting this? Hope it will work fine.

Try this code snippet here

Regex: /url[\s]*\([\s]*(?!'|\")(?!https?:\/\/)(?!data:)(?!#)

Here this regex will match url ( and after that there will be no " or '.

<?php
ini_set('display_errors', 1);
$domain = "http://example.com/";
$html = "url(1.css), url(' 1.css'), url( \"1.css\")";
$rep['/url[\s]*\([\s]*"[\s]*(?!https?:\/\/)(?!data:)(?!#)/i'] = 'url("'.$domain;
$rep["/url[\s]*\([\s]*'[\s]*(?!https?:\/\/)(?!data:)(?!#)/i"] = "url('".$domain;
$rep["/url[\s]*\([\s]*(?!'|\")(?!https?:\/\/)(?!data:)(?!#)/i"] = "url(".$domain;

$html = preg_replace(
    array_keys($rep),
    array_values($rep),
    $html
);
echo $html;

edited Apr 17, 2017 at 11:56

answered Apr 17, 2017 at 11:51

Sahil Gulati

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