- /**
- * is_external_link 检测字符串是否包含外链
- * @param string $text 文字
- * @param string $host 域名
- * @return boolean false 有外链 true 无外链
- * http://blog.qita.in
- function all_external_link($text = '', $host = '') {
- if (empty($host)) $host = $_SERVER['HTTP_HOST'];
- $reg = '/http(?:s?):\\/\\/((?:[A-za-z0-9-]+\\.)+[A-za-z]{2,4})/';
- preg_match_all($reg, $text, $data);
- $math = $data[1];
- foreach ($math as $value) {
- if($value != $host) return false;
- }
- return true;
- }
- //该片段来自于http://www.codesnippet.cn/detail/250720134820.html
来源: http://www.codesnippet.cn/detail/250720134820.html