PHP filters and replaces link URL addresses in submission information_PHP tutorial

PHP filters and replaces the link URL address in the submission message

There is a flood of information on the Internet. A large number of SEO black links often contain spam links in some comment posts. Use this method to filter out external link URLs

$string = preg_replace('/b(https?|ftp|file)://[-A-Z0-9+&@#/%?=~_|$!:,.;]*[A -Z0-9+&@#/%=~_|$]/i', '', $string);

http://www.bkjia.com/PHPjc/363946.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/363946.htmlTechArticlePHP filters and replaces the link URL address in the submitted information. There is a flood of online information, and a large number of SEO black links are used in some comments. Posts often contain spam links. Use this method to filter out external links...