php-regexHow to use PHP regex to match a URL in a href attribute?

To match a URL in a href attribute using PHP regex, you can use the following code:

$pattern = '/href="(.*?)"/';
$string = '<a href="http://example.com">Link</a>';

preg_match($pattern, $string, $matches);

The output of the code will be:

Array
(
    [0] => href="http://example.com"
    [1] => http://example.com
)

Code explanation

$pattern: This is the regular expression used to match the URL in the href attribute.
$string: This is the string containing the HTML element with the href attribute.
preg_match(): This is the PHP function used to match the regular expression against the string.