parse_url()解析url

var_dump(parse_url($url));

array(7) {
["scheme"]=>
string(4) "http"
["host"]=>
string(8) "hostname"
["user"]=>
string(8) "username"
["pass"]=>
string(8) "password"
["path"]=>
string(5) "/path"
["query"]=>
string(9) "arg=value"
["fragment"]=>
string(6) "anchor"
}

print_r(parse_url($url));

Array
(
[scheme] => http
[host] => hostname
[user] => username
[pass] => password
[path] => /path
[query] => arg=value
[fragment] => anchor
)