How to check if a link exists in a text using PHP?

Question

PHP

Good afternoon.
Can you please tell me a way how to check the presence of http / https links in the text?
For example, a person writes a text, inserts a link to a resource somewhere inside. Is there a way to check if a link exists in a text in the format example.com using PHP ?
I want to implement the following mechanism:
A person writes news, inserts links, when sending news, I want to tear out the link, process it using cURL and insert a block with meta data of the page ala Facebook and VK according to the principle of social networks.
How can this be implemented? How can I get the link in the middle of the text and process it somehow?

Answer 1

php.net/manual/en/function.preg-replace-callback.php

Answer 2

$string = '"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, https sunt in culpa qui officia deserunt mollit anim id est laborum."';
if(stristr($string, 'https') === FALSE && stristr($string, 'http') === FALSE) {
    echo '"https" не найдена в строке';
}else{
    echo '"https" найдена в строке';
}