3v4l.org

run code in 300+ PHP versions simultaneously
<?php $map = new WeakMap(); $object = new stdClass(); $map[$object] = null; var_dump(gettype($map[$object])); var_dump(isset($map[$object]));

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)
8.3.110.0030.00620.94
8.3.100.0040.00424.06
8.3.90.0110.00726.77
8.3.80.0030.00617.97
8.3.70.0140.00318.55
8.3.60.0070.01018.43
8.3.50.0060.01516.65
8.3.40.0070.00719.93
8.3.30.0180.00420.90
8.3.20.0060.00623.57
8.3.10.0070.00523.81
8.3.00.0070.00724.56
8.2.230.0040.00822.58
8.2.220.0100.00337.54
8.2.210.0130.00726.77
8.2.200.0040.00718.54
8.2.190.0120.00618.29
8.2.180.0150.00416.63
8.2.170.0070.01118.88
8.2.160.0120.00722.96
8.2.150.0110.00324.31
8.2.140.0100.00223.81
8.2.130.0080.00524.56
8.2.120.0040.00821.97
8.2.110.0150.00322.01
8.2.100.0060.00920.37
8.2.90.0060.00620.47
8.2.80.0090.00321.46
8.2.70.0060.00720.29
8.2.60.0060.00520.11
8.2.50.0160.00319.72
8.2.40.0120.00619.72
8.2.30.0130.00419.72
8.2.20.0140.00219.72
8.2.10.0110.00519.72
8.2.00.0130.00319.72
8.1.290.0000.00930.84
8.1.280.0000.01425.92
8.1.270.0100.00223.81
8.1.260.0060.00524.66
8.1.250.0060.00625.53
8.1.240.0020.01022.69
8.1.230.0060.00722.54
8.1.220.0060.00620.44
8.1.210.0060.00620.87
8.1.200.0030.00820.11
8.1.190.0070.00520.16
8.1.180.0160.00119.72
8.1.170.0120.00519.72
8.1.160.0090.00819.72
8.1.150.0100.00719.72
8.1.140.0060.01019.72
8.1.130.0090.00919.72
8.1.120.0110.00719.72
8.1.110.0060.01219.72
8.1.100.0100.00819.72
8.1.90.0130.00319.72
8.1.80.0120.00519.72
8.1.70.0110.00519.72
8.1.60.0130.00519.72
8.1.50.0130.00519.72
8.1.40.0120.00619.72
8.1.30.0090.00819.72
8.1.20.0130.00519.72
8.1.10.0060.01019.72
8.1.00.0140.00219.72
8.0.300.0070.00721.41
8.0.290.0130.00219.77
8.0.280.0130.00819.72
8.0.270.0090.00919.72
8.0.260.0130.00619.72
8.0.250.0130.00619.72
8.0.240.0150.00619.72
8.0.230.0110.00819.72
8.0.220.0160.00419.72
8.0.210.0130.00619.72
8.0.200.0150.00619.72
8.0.190.0180.00219.72
8.0.180.0120.00719.72
8.0.170.0160.00419.72
8.0.160.0130.00419.72
8.0.150.0130.00519.72
8.0.140.0150.00519.72
8.0.130.0140.00519.72
8.0.120.0150.00719.72
8.0.110.0170.00319.72
8.0.100.0110.00919.72
8.0.90.0160.00419.72
8.0.80.0150.00519.72
8.0.70.0130.00319.72
8.0.60.0160.00319.72
8.0.50.0120.00719.72
8.0.30.0120.00319.72
8.0.20.0130.00519.72
8.0.10.0160.00219.72

preferences:
27.32 ms | 403 KiB | 5 Q