- escapeshellcmd: documentation ( source)
- escapeshellarg: documentation ( source)
<?php
$domain = 'https://kgopen.baidu.com/user/noinfo?code=2';
$ip = escapeshellcmd($domain);
echo $ip.'\n';
$domain = "'https://kgopen.baidu.com/user/noinfo?code=2'";
$ip = escapeshellarg($domain);
echo $ip;