3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo php_uname(); echo PHP_OS; echo $_SERVER['SERVER_ADDR'];
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Linux php_shell 4.8.6-1-ARCH #1 SMP PREEMPT Mon Oct 31 18:51:30 CET 2016 x86_64Linux Warning: Undefined array key "SERVER_ADDR" in /in/76j4G on line 4
Output for 5.6.28, 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Linux php_shell 4.8.6-1-ARCH #1 SMP PREEMPT Mon Oct 31 18:51:30 CET 2016 x86_64Linux Notice: Undefined index: SERVER_ADDR in /in/76j4G on line 4
Output for 7.3.32 - 7.3.33
Linux php_shell 4.8.6-1-ARCH #1 SMP PREEMPT Mon Oct 31 18:51:30 CET 2016 x86_64Linux
Output for 5.5.25 - 5.5.32, 5.5.34, 5.6.8 - 5.6.18, 5.6.20 - 5.6.21, 7.0.0 - 7.0.3, 7.0.5 - 7.0.6
Linux php_shell 4.4.5-1-ARCH #1 SMP PREEMPT Thu Mar 10 07:38:19 CET 2016 x86_64Linux Notice: Undefined index: SERVER_ADDR in /in/76j4G on line 4
Output for 5.5.33, 5.6.19, 7.0.4
Linux php_shell 4.4.1-2-ARCH #1 SMP PREEMPT Wed Feb 3 13:12:33 UTC 2016 x86_64Linux Notice: Undefined index: SERVER_ADDR in /in/76j4G on line 4
Output for 5.5.24, 5.5.35
Linux php_shell 4.5.4-1-ARCH #1 SMP PREEMPT Wed May 11 22:21:28 CEST 2016 x86_64Linux Notice: Undefined index: SERVER_ADDR in /in/76j4G on line 4

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