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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$s = "www.baidu.com";
$c = parse_url($s);
$h = $c["host"];
//$p = $c['port'];
$b = filter_var($h, FILTER_VALIDATE_IP);
var_dump($h);
//var_dump($p);
var_dump($b);