Online PHP editor | output for 4QM9i

Output for 7.3.33, 7.4.26 - 7.4.27, 7.4.29 - 7.4.33, 8.0.13 - 8.0.14, 8.0.16 - 8.0.23, 8.0.25 - 8.0.30, 8.1.0 - 8.1.5, 8.1.7 - 8.1.11, 8.1.13 - 8.1.19, 8.1.21 - 8.1.27, 8.2.0 - 8.2.2, 8.2.4 - 8.2.17, 8.3.0 - 8.3.4, 8.3.6: array(1) { [0]=> string(10) "/in//4QM9i" }
Output for 8.3.5: array(2) { [0]=> string(10) "/in//4QM9i" [1]=> string(10) "/in//YMqGB" }
Output for 8.2.18: array(2) { [0]=> string(10) "/in//4QM9i" [1]=> string(10) "/in//HZRcJ" }
Output for 8.2.3: array(2) { [0]=> string(10) "/in//4QM9i" [1]=> string(10) "/in//52Url" }
Output for 8.1.28: array(2) { [0]=> string(10) "/in//4QM9i" [1]=> string(10) "/in//fMEpH" }
Output for 8.1.20: array(2) { [0]=> string(10) "/in//4QM9i" [1]=> string(10) "/in//SJPtA" }
Output for 8.1.12: array(2) { [0]=> string(10) "/in//4QM9i" [1]=> string(10) "/in//cqLAp" }
Output for 8.1.6: array(2) { [0]=> string(10) "/in//4QM9i" [1]=> string(10) "/in//hk18X" }
Output for 8.0.24: array(2) { [0]=> string(10) "/in//4QM9i" [1]=> string(10) "/in//W0PmT" }
Output for 8.0.15: array(2) { [0]=> string(10) "/in//4QM9i" [1]=> string(10) "/in//i4eqI" }
Output for 4.3.0 - 4.3.6, 4.3.9 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 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 - 7.2.34, 7.3.0 - 7.3.32, 7.4.0 - 7.4.25, 8.0.0 - 8.0.12: array(0) { }
Output for 7.4.28: array(2) { [0]=> string(10) "/in//4QM9i" [1]=> string(10) "/in//P0HN6" }
Output for 5.1.0: Fatal error: fatal flex scanner internal error--end of buffer missed in /in/4QM9i on line 3 
Process exited with code 255.
Output for 4.3.7 - 4.3.8: bool(false)