3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump($a = memory_get_usage()); class Foo{ function test(){ static $foo = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"; return $foo; } } var_dump(memory_get_usage() - $a); $a = memory_get_usage(); $v1 = (new Foo)->test(); var_dump(memory_get_usage() - $a); $a = memory_get_usage(); $v2 = (new Foo)->test(); var_dump(memory_get_usage() - $a); $a = memory_get_usage(); $v3 = (new Foo)->test(); var_dump(memory_get_usage() - $a); $a = memory_get_usage(); $v4 = (new Foo)->test(); var_dump(memory_get_usage() - $a); $a = memory_get_usage(); $v5 = (new Foo)->test(); var_dump(memory_get_usage() - $a); $a = memory_get_usage();

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)
7.2.00.0060.01019.42
7.1.70.0060.00617.13
7.1.60.0040.00717.23
7.1.50.0000.01116.79
7.1.00.0100.07022.41
7.0.200.0080.00414.60
7.0.120.0230.06020.27
7.0.110.0400.05320.46
7.0.100.0430.05020.28
7.0.90.0400.05320.41
7.0.80.0430.06320.28
7.0.70.0330.05020.41
7.0.60.0300.05320.20
7.0.50.0300.05320.34
7.0.40.0330.06020.27
7.0.30.0430.04720.34
7.0.20.0230.05720.20
7.0.10.0270.05320.28
7.0.00.0300.05320.34
5.6.260.0070.05720.85
5.6.250.0170.06020.86
5.6.240.0170.05721.11
5.6.230.0100.05721.01
5.6.220.0070.05720.74
5.6.210.0130.05020.96
5.6.200.0100.06021.03
5.6.190.0130.05321.01
5.6.180.0100.05720.87
5.6.170.0000.06321.04
5.6.160.0100.05320.80
5.6.150.0100.06720.82
5.6.140.0170.05320.84
5.6.130.0300.06020.81
5.6.120.0170.05021.04
5.6.110.0170.05321.03
5.6.100.0170.05321.02
5.6.90.0070.05720.85
5.6.80.0070.06020.43
5.6.70.0130.05320.36
5.6.60.0070.05720.29
5.6.50.0070.05320.42
5.6.40.0100.05020.21
5.6.30.0100.05320.30
5.6.20.0070.05720.17
5.6.10.0200.04320.41
5.6.00.0100.05720.38

preferences:
42.15 ms | 665 KiB | 5 Q