$re = '/./';
$str = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. In tempor sed elit at luctus. Phasellus a commodo nisi.
<a href="https://mydomain.com/link1/" target="_blank">Link 1</a>
In hac habitasse platea dictumst. Etiam laoreet rhoncus rhoncus. Sed hendrerit nisl posuere maximus aliquam.
<a href = "https://mydomain.com/link2/">Link 2</a>
Quisque eleifend arcu quis lacinia efficitur. Nam lobortis nibh purus, sodales ultricies lacus luctus eget.
<a href =\'https://mydomain.com/link3/\' title=\'link title\'>Link 3</a>';
preg_match($re, $str, $matches, PREG_OFFSET_CAPTURE, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php