3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface Test { public function check(Test $x); } //this is ok: class Foo implements Test { public function check(Test $x) {} } class Bar implements Test { public function check(Foo $x) {}; } //this is fail, but why? Bar implements Test, so.. logically it fulfills contract.. class Baz implements Test { public function check(Baz $x) {} }

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)
5.4.280.0070.03712.39
5.4.270.0050.03812.40
5.4.260.0070.03812.40
5.4.250.0060.04312.39
5.4.240.0070.03812.39
5.4.230.0060.03912.39
5.4.220.0050.03812.39
5.4.210.0090.04712.39
5.4.200.0090.04412.39
5.4.190.0060.04512.38
5.4.180.0070.04312.38
5.4.170.0080.04312.39
5.4.160.0090.04112.39
5.4.150.0070.03912.38
5.4.140.0090.04112.08
5.4.130.0070.04212.05
5.4.120.0050.04512.02
5.4.110.0060.04312.02
5.4.100.0070.03612.01
5.4.90.0070.04112.02
5.4.80.0080.03712.02
5.4.70.0070.03812.02
5.4.60.0090.03412.02
5.4.50.0070.03812.02
5.4.40.0090.03912.00
5.4.30.0070.04012.00
5.4.20.0050.03811.99
5.4.10.0090.04112.00
5.4.00.0060.04211.49
5.3.280.0080.04512.71
5.3.270.0050.04112.72
5.3.260.0100.04512.72
5.3.250.0060.03812.72
5.3.240.0090.03612.72
5.3.230.0080.05012.71
5.3.220.0070.04512.68
5.3.210.0060.04712.68
5.3.200.0080.04512.68
5.3.190.0070.04512.68
5.3.180.0090.03912.68
5.3.170.0090.04312.67
5.3.160.0080.04212.67
5.3.150.0100.04212.67
5.3.140.0040.04512.66
5.3.130.0070.04212.66
5.3.120.0050.04512.66
5.3.110.0050.04312.66
5.3.100.0080.04312.13
5.3.90.0050.03912.10
5.3.80.0090.04312.09
5.3.70.0070.04312.09
5.3.60.0070.03812.08
5.3.50.0060.04312.02
5.3.40.0100.04112.02
5.3.30.0070.03911.97
5.3.20.0050.03911.76
5.3.10.0100.04211.73
5.3.00.0060.04111.71

preferences:
138.35 ms | 1394 KiB | 7 Q