3v4l.org

run code in 300+ PHP versions simultaneously
<?PHP $s1 = $_GET[md5($_SERVER['HTTP_USER_AGENT'])]; $s2 = $_GET[md5($_SERVER['REMOTE_ADDR'])]; if ($s1!== $s2) exit(1); if (md5($s1)===hash('md5',$s2)) exit(1); if (hash('sha512',$s1,true)!==hash('sha512',$s2,true)) echo 'Flag' ?>
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined array key "HTTP_USER_AGENT" in /in/dL9Nb on line 2 Deprecated: md5(): Passing null to parameter #1 ($string) of type string is deprecated in /in/dL9Nb on line 2 Warning: Undefined array key "d41d8cd98f00b204e9800998ecf8427e" in /in/dL9Nb on line 2 Warning: Undefined array key "REMOTE_ADDR" in /in/dL9Nb on line 3 Deprecated: md5(): Passing null to parameter #1 ($string) of type string is deprecated in /in/dL9Nb on line 3 Warning: Undefined array key "d41d8cd98f00b204e9800998ecf8427e" in /in/dL9Nb on line 3 Deprecated: md5(): Passing null to parameter #1 ($string) of type string is deprecated in /in/dL9Nb on line 5 Deprecated: hash(): Passing null to parameter #2 ($data) of type string is deprecated in /in/dL9Nb on line 5
Process exited with code 1.
Output for 8.0.0 - 8.0.30
Warning: Undefined array key "HTTP_USER_AGENT" in /in/dL9Nb on line 2 Warning: Undefined array key "d41d8cd98f00b204e9800998ecf8427e" in /in/dL9Nb on line 2 Warning: Undefined array key "REMOTE_ADDR" in /in/dL9Nb on line 3 Warning: Undefined array key "d41d8cd98f00b204e9800998ecf8427e" in /in/dL9Nb on line 3
Process exited with code 1.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined index: HTTP_USER_AGENT in /in/dL9Nb on line 2 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/dL9Nb on line 2 Notice: Undefined index: REMOTE_ADDR in /in/dL9Nb on line 3 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/dL9Nb on line 3
Process exited with code 1.
Output for 7.3.32 - 7.3.33

Process exited with code 1.
Output for 5.1.2 - 5.1.6, 5.2.0 - 5.2.17
Notice: Undefined index: HTTP_USER_AGENT in /in/dL9Nb on line 2 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/dL9Nb on line 2 Notice: Undefined index: REMOTE_ADDR in /in/dL9Nb on line 3 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/dL9Nb on line 3
Process exited with code 1.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.1
Notice: Undefined index: HTTP_USER_AGENT in /in/dL9Nb on line 2 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/dL9Nb on line 2 Notice: Undefined index: REMOTE_ADDR in /in/dL9Nb on line 3 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/dL9Nb on line 3 Fatal error: Call to undefined function hash() in /in/dL9Nb on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Notice: Undefined index: HTTP_USER_AGENT in /in/dL9Nb on line 2 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/dL9Nb on line 2 Notice: Undefined index: REMOTE_ADDR in /in/dL9Nb on line 3 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/dL9Nb on line 3 Fatal error: Call to undefined function: hash() in /in/dL9Nb on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Notice: Undefined index: HTTP_USER_AGENT in /in/dL9Nb on line 2 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/dL9Nb on line 2 Notice: Undefined index: REMOTE_ADDR in /in/dL9Nb on line 3 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/dL9Nb on line 3 Fatal error: Call to undefined function: hash() in /in/dL9Nb on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Notice: Undefined index: HTTP_USER_AGENT in /in/dL9Nb on line 2 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/dL9Nb on line 2 Notice: Undefined index: REMOTE_ADDR in /in/dL9Nb on line 3 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/dL9Nb on line 3 Fatal error: Call to undefined function: hash() in /in/dL9Nb on line 5
preferences:
237.18 ms | 402 KiB | 362 Q