$SERVER_NAME = $_SERVER['SERVER_NAME'];
preg_match('/(.*\.)?\w+\.\w+$/', $SERVER_NAME, $matches);
if (!empty($matches[1])) {
$domain_url = trim($matches[1], '.');
} else {
$domain_url = '';
}
php 获取连接地址前缀
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转载自my.oschina.net/u/3766911/blog/1624411
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