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<?PHP $s1 = $_GET[md5($_SERVER['HTTP_USER_AGENT'])]; $s2 = $_GET[md5($_SERVER['REMOTE_ADDR'])]; if ($s1!= $s2) { if (md5($s1)===hash('md5',$s2)) { if (hash('sha512',$s1,true)!==hash('sha512',$s2,true)) echo 'Flag'; } } ?>
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined array key "HTTP_USER_AGENT" in /in/4UMZW on line 2 Deprecated: md5(): Passing null to parameter #1 ($string) of type string is deprecated in /in/4UMZW on line 2 Warning: Undefined array key "d41d8cd98f00b204e9800998ecf8427e" in /in/4UMZW on line 2 Warning: Undefined array key "REMOTE_ADDR" in /in/4UMZW on line 3 Deprecated: md5(): Passing null to parameter #1 ($string) of type string is deprecated in /in/4UMZW on line 3 Warning: Undefined array key "d41d8cd98f00b204e9800998ecf8427e" in /in/4UMZW on line 3
Output for 8.0.0 - 8.0.30
Warning: Undefined array key "HTTP_USER_AGENT" in /in/4UMZW on line 2 Warning: Undefined array key "d41d8cd98f00b204e9800998ecf8427e" in /in/4UMZW on line 2 Warning: Undefined array key "REMOTE_ADDR" in /in/4UMZW on line 3 Warning: Undefined array key "d41d8cd98f00b204e9800998ecf8427e" in /in/4UMZW on line 3
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined index: HTTP_USER_AGENT in /in/4UMZW on line 2 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/4UMZW on line 2 Notice: Undefined index: REMOTE_ADDR in /in/4UMZW on line 3 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/4UMZW on line 3
Output for 7.3.32 - 7.3.33
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Notice: Undefined index: HTTP_USER_AGENT in /in/4UMZW on line 2 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/4UMZW on line 2 Notice: Undefined index: REMOTE_ADDR in /in/4UMZW on line 3 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/4UMZW on line 3

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228.78 ms | 402 KiB | 310 Q