3v4l.org

run code in 300+ PHP versions simultaneously
<?php <?php $mem1 = memory_get_usage(); $a = 'Hello, this is just test message'; echo "Memory (non-real): ". (memory_get_usage() - $mem1)."\n"; echo "Strlen: ". strlen($a)."\n"; echo "Strlen * 8bits: ". (strlen($a) * 8),"\n";

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)
7.0.20.0270.04720.24
7.0.10.0030.07320.19
7.0.00.0070.09020.30
5.6.170.0330.06720.41
5.6.160.0070.08720.46
5.6.150.0070.04318.16
5.6.140.0130.07018.12
5.6.130.0070.05318.12
5.6.120.0070.05021.11
5.6.110.0070.06021.13
5.6.100.0000.04321.10
5.6.90.0030.09020.88
5.6.80.0100.07720.40
5.5.310.0200.06020.34
5.5.300.0070.03717.95
5.5.290.0170.07017.99
5.5.280.0070.07020.68
5.5.270.0130.03320.86
5.5.260.0030.04320.84
5.5.250.0100.08020.68
5.5.240.0070.07020.28

preferences:
146.6 ms | 1394 KiB | 7 Q