php preg_match css source code

Question

I have the following code:

$date = 
  "<style>
    background-image:url(\"/hamza.png\");
    background-image:url(/hamza.png);
    background-image:url('/hamza.png');
  </style>";

I want to usepreg_match to check if the url start with a slash.

This is what I have tried:

if (preg_match('url\(("|\'|)(?:\/)\1\)', $data) {
    echo 'yes';
} else {
    echo 'no';
}

It always gives me "no". I would like to know what this code is for : (https?:\s*)?//.*?\1)

Avinash Raj · Accepted Answer · 2015-07-18 17:22:11Z

1

You forget to use delimiters and also you need to match the chars which exists inside the brackets.

if(preg_match('~url\((["\']?)/[^)]*\1\)~', $data){

DEMO

Update:

preg_replace('~(background-image:url\(["\']?)(?=\/)~', '\1website.com', $data);

DEMO

edited Jul 18, 2015 at 17:22

answered Jul 18, 2015 at 15:09

Avinash Raj

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11 Comments

I will be the best Over a year ago

it replaces urls that start with two slashes not one

Avinash Raj Over a year ago

are you trying to match or replace? pls provide expected output.

I will be the best Over a year ago

I'm trying to to preg_replace using preg_match as a condition

Avinash Raj Over a year ago

just post the expected output you would get after preg_replace.

I will be the best Over a year ago

I want to replace background-image and add my url if the background-image:url('/hamza.png'); start with one slash of course

|

Ganesan Karuppasamy · Accepted Answer · 2015-07-18 16:44:07Z

0

U can try this code

if (preg_match_all('/url\(\s*[\'"]?([^\'")]+)[\'"]?\s*\)/i', $date, $matches)) {
  echo 'yes';
} else {
  echo 'no';
}

edited Jul 18, 2015 at 16:44

answered Jul 18, 2015 at 15:38

Ganesan Karuppasamy

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