3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s=''; $s++; var_dump($s); var_dump(str_increment($s)); var_dump(str_increment('')); var_dump(str_decrement(''));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.4.130.0090.01219.55
8.4.120.0090.00220.46
8.4.110.0070.00317.90
8.4.100.0060.00417.97
8.4.90.0050.00517.81
8.3.260.0120.00816.75
8.3.250.0130.00617.12
8.3.240.0040.00416.87
8.3.230.0030.00516.85
8.3.180.0070.00216.66
8.3.50.0060.00316.79
8.2.290.0040.00416.96

preferences:
28.2 ms | 403 KiB | 5 Q