3v4l.org

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<?php $domain = 'https://kgopen.baidu.com/user/noinfo?code=2'; //$ip = escapeshellcmd($domain); echo $ip.'\n'; $domain = "`ls`"; $ip = escapeshellarg($domain); echo $domain;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined variable $ip in /in/FLuI8 on line 4 \n`ls`
Output for 7.0.0 - 7.0.25, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: ip in /in/FLuI8 on line 4 \n`ls`
Output for 7.3.32 - 7.3.33
\n`ls`

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