3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i = 0; $i < 100; $i++) { test($i); } function test($x) { echo '#'.$x; }
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, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
#0#1#2#3#4#5#6#7#8#9#10#11#12#13#14#15#16#17#18#19#20#21#22#23#24#25#26#27#28#29#30#31#32#33#34#35#36#37#38#39#40#41#42#43#44#45#46#47#48#49#50#51#52#53#54#55#56#57#58#59#60#61#62#63#64#65#66#67#68#69#70#71#72#73#74#75#76#77#78#79#80#81#82#83#84#85#86#87#88#89#90#91#92#93#94#95#96#97#98#99

preferences:
223.68 ms | 406 KiB | 323 Q