3v4l.org

run code in 300+ PHP versions simultaneously
<?PHP $s1 = $_GET[md5($_SERVER['HTTP_USER_AGENT'])]; $s2 = $_GET[md5($_SERVER['REMOTE_ADDR'])]; ?>
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/1n1n1 on line 2 Deprecated: md5(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1n1n1 on line 2 Warning: Undefined array key "d41d8cd98f00b204e9800998ecf8427e" in /in/1n1n1 on line 2 Warning: Undefined array key "REMOTE_ADDR" in /in/1n1n1 on line 3 Deprecated: md5(): Passing null to parameter #1 ($string) of type string is deprecated in /in/1n1n1 on line 3 Warning: Undefined array key "d41d8cd98f00b204e9800998ecf8427e" in /in/1n1n1 on line 3
Output for 8.0.0 - 8.0.30
Warning: Undefined array key "HTTP_USER_AGENT" in /in/1n1n1 on line 2 Warning: Undefined array key "d41d8cd98f00b204e9800998ecf8427e" in /in/1n1n1 on line 2 Warning: Undefined array key "REMOTE_ADDR" in /in/1n1n1 on line 3 Warning: Undefined array key "d41d8cd98f00b204e9800998ecf8427e" in /in/1n1n1 on line 3
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.32, 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/1n1n1 on line 2 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/1n1n1 on line 2 Notice: Undefined index: REMOTE_ADDR in /in/1n1n1 on line 3 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/1n1n1 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/1n1n1 on line 2 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/1n1n1 on line 2 Notice: Undefined index: REMOTE_ADDR in /in/1n1n1 on line 3 Notice: Undefined index: d41d8cd98f00b204e9800998ecf8427e in /in/1n1n1 on line 3

preferences:
293.99 ms | 402 KiB | 420 Q