3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = ['a' => 1, 'b' => 2]; var_dump(key($array));

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)
8.5.10.0140.00416.43
8.5.00.0120.01119.79
8.4.150.0030.00014.05
8.4.140.0110.00917.35
8.4.130.0130.00817.60
8.4.120.0060.01320.21
8.4.110.0120.00822.46
8.4.100.0150.00617.61
8.4.90.0090.01118.44
8.4.80.0110.00917.68
8.4.70.0170.00517.57
8.4.60.0140.00718.34
8.4.50.0120.00917.72
8.4.40.0150.00419.23
8.4.30.0090.00919.49
8.4.20.0030.00620.38
8.4.10.0040.00419.50
8.3.280.0120.00918.16
8.3.270.0120.00716.47
8.3.260.0080.01116.57
8.3.250.0130.00418.87
8.3.240.0110.00818.71
8.3.230.0120.00816.29
8.3.220.0100.00817.11
8.3.210.0070.00816.43
8.3.200.0030.00616.54
8.3.190.0090.01017.18
8.3.180.0090.00617.20
8.3.170.0090.00016.41
8.3.160.0060.01216.56
8.3.150.0060.01218.81
8.3.140.0120.00616.39
8.3.130.0050.00318.39
8.3.120.0060.01220.61
8.3.110.0130.00318.07
8.3.100.0160.00316.66
8.3.90.0110.00426.77
8.3.80.0060.00316.50
8.3.70.0090.00616.50
8.3.60.0080.00818.18
8.3.50.0110.00618.19
8.3.40.0140.00418.57
8.3.30.0140.00018.55
8.3.20.0080.00018.85
8.3.10.0050.00321.54
8.3.00.0050.00320.84
8.2.290.0120.00620.50
8.2.280.0050.00322.56
8.2.270.0120.00616.50
8.2.260.0190.00018.71
8.2.250.0160.00016.66
8.2.240.0080.00019.14
8.2.230.0100.00720.94
8.2.220.0000.00824.06
8.2.210.0150.00326.77
8.2.200.0030.00616.63
8.2.190.0070.01018.20
8.2.180.0090.00616.38
8.2.170.0030.01422.96
8.2.160.0100.00722.30
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0030.00619.49
8.2.110.0090.00020.24
8.2.100.0070.00417.84
8.2.90.0040.00418.09
8.2.80.0090.00018.22
8.2.70.0060.00317.50
8.2.60.0050.00318.03
8.2.50.0090.00018.10
8.2.40.0000.00822.28
8.2.30.0000.00719.05
8.2.20.0040.00417.98
8.2.10.0040.00717.86
8.2.00.0040.00417.94
8.1.330.0110.00722.11
8.1.320.0090.00716.18
8.1.310.0100.00716.72
8.1.300.0050.00317.99
8.1.290.0000.00830.84
8.1.280.0060.00925.92
8.1.270.0000.00822.20
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0060.00323.96
8.1.230.0110.00020.68
8.1.220.0000.00817.74
8.1.210.0060.00319.07
8.1.200.0040.00417.35
8.1.190.0050.00317.43
8.1.180.0000.00818.10
8.1.170.0070.00018.46
8.1.160.0040.00418.88
8.1.150.0040.00418.73
8.1.140.0000.00722.12
8.1.130.0030.00320.19
8.1.120.0070.00417.41
8.1.110.0040.00717.26
8.1.100.0000.00717.28
8.1.90.0040.00417.30
8.1.80.0030.00317.38
8.1.70.0030.00517.29
8.1.60.0030.00617.48
8.1.50.0040.00417.38
8.1.40.0030.00517.47
8.1.30.0000.00817.60
8.1.20.0000.00717.47
8.1.10.0040.00417.33
8.1.00.0030.00517.38
8.0.300.0000.01019.95
8.0.290.0070.00016.63
8.0.280.0050.00318.28
8.0.270.0050.00317.10
8.0.260.0080.00018.41
8.0.250.0030.00316.87
8.0.240.0000.00716.92
8.0.230.0070.00016.87
8.0.220.0070.00016.75
8.0.210.0040.00416.75
8.0.200.0000.00616.77
8.0.190.0040.00416.94
8.0.180.0050.00316.77
8.0.170.0000.00816.84
8.0.160.0090.00016.84
8.0.150.0040.00416.74
8.0.140.0070.00016.73
8.0.130.0030.00313.30
8.0.120.0050.00316.73
8.0.110.0040.00416.80
8.0.100.0040.00416.81
8.0.90.0040.00416.84
8.0.80.0120.00416.78
8.0.70.0050.00316.64
8.0.60.0000.00716.92
8.0.50.0040.00416.71
8.0.30.0050.01117.02
8.0.20.0120.00617.40
8.0.10.0000.00716.98
8.0.00.0110.00616.54
7.4.330.0000.00515.55
7.4.320.0030.00316.53
7.4.300.0000.00716.49
7.4.290.0000.00816.52
7.4.280.0060.00516.43
7.4.270.0060.00316.43
7.4.260.0030.00316.49
7.4.250.0070.00016.48
7.4.240.0070.00016.48
7.4.230.0070.00016.33
7.4.220.0040.00416.63
7.4.210.0090.00516.59
7.4.200.0030.00316.53
7.4.160.0110.00716.31
7.4.140.0110.00617.86
7.4.130.0100.00716.32
7.4.120.0110.00616.47
7.4.110.0090.00916.47
7.4.100.0060.01316.41
7.4.90.0090.00816.34
7.4.80.0090.00619.39
7.4.70.0000.01716.49
7.4.60.0100.00716.30
7.4.50.0040.00716.37
7.4.40.0120.00916.39
7.4.00.0070.01214.82
7.3.330.0050.00012.98
7.3.320.0060.00012.96
7.3.310.0040.00416.18
7.3.300.0000.00716.18
7.3.290.0000.00716.11
7.3.280.0160.00316.06
7.3.260.0080.01116.22
7.3.240.0080.01116.21
7.3.230.0060.01016.52
7.3.210.0090.00816.39
7.3.200.0120.00416.19
7.3.190.0120.01216.24
7.3.180.0180.00016.33
7.3.170.0120.00916.20
7.3.160.0070.01016.42
7.3.120.0040.01114.81
7.3.110.0040.01514.73
7.3.100.0120.00314.67
7.3.90.0030.01214.61
7.3.80.0090.00614.60
7.3.70.0040.01114.52
7.3.60.0030.00614.64
7.3.50.0000.00914.62
7.3.40.0070.00714.63
7.3.30.0070.00414.46
7.3.20.0030.01116.40
7.3.10.0090.00616.53
7.3.00.0070.00716.71
7.2.330.0090.00916.41
7.2.320.0000.01716.55
7.2.310.0170.00016.20
7.2.300.0080.00816.09
7.2.290.0090.00916.56
7.2.250.0100.01015.01
7.2.240.0060.01314.49
7.2.230.0000.01114.86
7.2.220.0090.00614.57
7.2.210.0140.00314.66
7.2.200.0000.01214.52
7.2.190.0060.00914.73
7.2.180.0110.00014.98
7.2.170.0030.00814.78
7.2.120.1010.00313.91
7.2.110.0830.00314.08
7.2.100.1290.00914.54
7.2.90.0770.01814.46
7.2.80.1270.01214.48
7.2.70.0910.00014.93
7.2.60.1180.00914.84
7.2.50.1580.00914.71
7.2.40.1030.00714.66
7.2.30.1960.01014.90
7.2.20.1780.00615.08
7.2.10.0830.00614.63
7.2.00.0660.00714.59
7.1.330.0070.00715.78
7.1.320.0060.00315.54
7.1.310.0060.00615.30
7.1.300.0070.00715.76
7.1.290.0120.00015.47
7.1.280.0040.00415.76
7.1.270.0000.01215.45
7.1.260.0000.01115.51
7.1.240.0700.00713.93
7.1.230.1250.00713.77
7.1.220.1360.00313.66
7.1.210.1090.00013.86
7.1.200.1310.00713.92
7.1.190.1100.00713.68
7.1.180.0720.01113.75
7.1.170.1020.00013.61
7.1.160.1960.00713.81
7.1.150.1700.01313.93
7.1.140.1080.00413.79
7.1.130.1170.00713.89
7.1.120.0900.01313.64
7.1.110.1090.00613.80
7.1.100.1760.00713.70
7.1.90.0730.00313.61
7.1.80.0750.00713.86
7.1.70.1670.00013.68
7.1.60.0920.00713.86
7.1.50.1740.00313.80
7.1.40.0730.01013.73
7.1.30.2060.01013.68
7.1.20.1010.01313.79
7.1.10.1120.00713.92
7.1.00.1090.00313.71
5.6.380.0160.00313.84

preferences:
174.57 ms | 403 KiB | 5 Q