3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump($_SERVER; /* setlocale(LC_ALL, 'ru_RU.CP1251'); mb_internal_encoding('UTF-8'); $crc32 = crc32(mb_strtolower(str_replace('ё', 'е', 'Алёна'))); setlocale(LC_ALL, null); var_dump($crc32);*/

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)
7.0.00.0130.08320.05
5.6.160.0100.08020.61
5.6.150.0070.04318.20
5.6.140.0000.04318.23
5.6.130.0030.07018.14
5.6.120.0070.05321.11
5.6.110.0130.08021.11
5.6.100.0100.03321.00
5.6.90.0000.04320.94
5.6.80.0130.06320.37
5.5.300.0070.06017.95
5.5.290.0100.07717.98
5.5.280.0070.05320.84
5.5.270.0030.07720.79
5.5.260.0000.09020.95
5.5.250.0130.07720.58
5.5.240.0200.04720.27

preferences:
140.81 ms | 1394 KiB | 7 Q