php域名匹配正则表达式代码
- function matchdomain($q){
- preg_match('/(([a-z0-9](w|-){0,61}?[a-z0-9]|[a-z0-9]).){1,}(aero|arpa|asia|biz|cat|com|coop|co|edu|gov|info|int|jobs|mil|mobi|museum|name|net|org|pro|tel|travel|[a-z][a-z])(.[a-z][a-z]){0,1}/', $q, $matches);
- return $matches[0];
- }
- //实例应用,代码如下:
- $com = 'www.phpfensi.com';
- echo matchdomain($com);
- //www.phpfensi.com
- $cn = 'afdsafs';
- echo matchdomain($cn);
- //notice: undefined offset: 0 因为没有不是域名所以正则不到域名所以出错了。