3v4l.org

run code in 300+ PHP versions simultaneously
<?php $domain = 'https://kgopen.baidu.com/user/noinfo?code=2'; $ip = escapeshellcmd($domain); echo $ip.'\n'; $domain = "`ls`"; $ip = escapeshellarg($domain); echo $ip;

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58.58 ms | 402 KiB | 5 Q