清除用户提交的URL'；s

Posted 2021-02-24

Useful when using user-submitted URLs

# Fix the URL:
$url = preg_replace('/((http://)?(www.)?([wd-]*?.)(w{2,4})/?)/i', 'http://www.$4$5', $d[0]);
 
From: 
 google.com 
 www.google.com 
 google.com/ 
 http://google.com 
 http://www.google.com 
 http://www.google.com/ 
 
To:
 http://www.google.com 
 http://www.google.com 
 http://www.google.com 
 http://www.google.com 
 http://www.google.com 
 http://www.google.com