3v4l.org

run code in 300+ PHP versions simultaneously
<?php $login = "\");"; putenv("LOGIN=".$_SERVER['REMOTE_ADDR']); $test = getenv("LOGIN"); echo "LOGIN = " .$test;
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 array key "REMOTE_ADDR" in /in/YDDed on line 3 LOGIN =
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 index: REMOTE_ADDR in /in/YDDed on line 3 LOGIN =
Output for 7.3.32 - 7.3.33
LOGIN =
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: REMOTE_ADDR in /in/YDDed on line 3 LOGIN =

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334.21 ms | 402 KiB | 456 Q