3v4l.org

run code in 300+ PHP versions simultaneously
<?php $OOO000000 = urldecode('%66%67%36%73%62%65%68%70%72%61%34%63%6f%5f%74%6e%64'); echo $GLOBALS[OOO0000O0]; ?>
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
Fatal error: Uncaught Error: Undefined constant "OOO0000O0" in /in/4g6G3:1 Stack trace: #0 {main} thrown in /in/4g6G3 on line 1
Process exited with code 255.
Output for 7.2.6 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Warning: Use of undefined constant OOO0000O0 - assumed 'OOO0000O0' (this will throw an Error in a future version of PHP) in /in/4g6G3 on line 1 Notice: Undefined index: OOO0000O0 in /in/4g6G3 on line 1
Output for 7.3.32 - 7.3.33
Warning: Use of undefined constant OOO0000O0 - assumed 'OOO0000O0' (this will throw an Error in a future version of PHP) in /in/4g6G3 on line 1
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33
Notice: Use of undefined constant OOO0000O0 - assumed 'OOO0000O0' in /in/4g6G3 on line 1 Notice: Undefined index: OOO0000O0 in /in/4g6G3 on line 1
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: Use of undefined constant OOO0000O0 - assumed 'OOO0000O0' in /in/4g6G3 on line 1 Notice: Undefined index: OOO0000O0 in /in/4g6G3 on line 1

preferences:
283.27 ms | 402 KiB | 380 Q