3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['0' => 'value']; $keys = array_keys($a); echo gettype($keys[0]);

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)
8.3.60.0110.00418.43
8.3.50.0070.00716.48
8.3.40.0040.01118.59
8.3.30.0070.01018.71
8.3.20.0050.00321.69
8.3.10.0040.00421.85
8.3.00.0080.00019.38
8.2.180.0120.00618.42
8.2.170.0110.00422.96
8.2.160.0070.00722.25
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0040.00419.38
8.2.110.0030.00621.00
8.2.100.0100.00717.91
8.2.90.0030.00517.75
8.2.80.0000.00818.76
8.2.70.0080.00017.59
8.2.60.0080.00017.75
8.2.50.0080.00017.48
8.2.40.0050.00319.24
8.2.30.0040.00419.38
8.2.20.0040.00417.99
8.2.10.0040.00418.10
8.2.00.0050.00217.79
8.1.270.0040.01123.91
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0090.00019.57
8.1.230.0080.00317.83
8.1.220.0000.00917.76
8.1.210.0040.00418.77
8.1.200.0000.00817.34
8.1.190.0050.00517.22
8.1.180.0040.00418.10
8.1.170.0080.00017.62
8.1.160.0000.00818.88
8.1.150.0080.00020.22
8.1.140.0000.00719.64
8.1.130.0070.00018.99
8.1.120.0070.00017.39
8.1.110.0030.00517.44
8.1.100.0000.00717.51
8.1.90.0000.00717.47
8.1.80.0000.00817.34
8.1.70.0030.00317.48
8.1.60.0040.00417.57
8.1.50.0040.00417.50
8.1.40.0050.00217.48
8.1.30.0030.00517.57
8.1.20.0050.00217.63
8.1.10.0030.00517.57
8.1.00.0030.00517.50
8.0.300.0040.00418.77
8.0.290.0080.00016.75
8.0.280.0000.00718.36
8.0.270.0040.00417.29
8.0.260.0000.00617.27
8.0.250.0030.00316.94
8.0.240.0000.00617.04
8.0.230.0000.00716.82
8.0.220.0050.00216.76
8.0.210.0070.00016.76
8.0.200.0040.00416.87
8.0.190.0070.00016.89
8.0.180.0000.00716.83
8.0.170.0020.00516.88
8.0.160.0000.00716.79
8.0.150.0000.00716.90
8.0.140.0000.00716.88
8.0.130.0000.00513.25
8.0.120.0030.00516.87
8.0.110.0040.00416.89
8.0.100.0040.00416.88
8.0.90.0000.00816.94
8.0.80.0060.01016.92
8.0.70.0050.00316.95
8.0.60.0050.00216.82
8.0.50.0030.00316.86
8.0.30.0090.00817.13
8.0.20.0090.01217.40
8.0.10.0050.00316.95
8.0.00.0140.00316.74
7.4.330.0000.00515.55
7.4.320.0030.00316.65
7.4.300.0000.00616.61
7.4.290.0000.00716.51
7.4.280.0000.00716.62
7.4.270.0060.00016.61
7.4.260.0090.00016.63
7.4.250.0040.00416.57
7.4.240.0030.00316.61
7.4.230.0000.00716.68
7.4.220.0060.01216.57
7.4.210.0160.00316.53
7.4.200.0040.00416.53
7.4.160.0100.00716.51
7.4.150.0120.01217.40
7.4.140.0110.01017.86
7.4.130.0100.00816.50
7.4.120.0110.00916.50
7.4.110.0080.00816.62
7.4.100.0140.00316.49
7.4.90.0070.01016.45
7.4.80.0060.00919.39
7.4.70.0060.00916.48
7.4.60.0120.00416.29
7.4.50.0060.00916.42
7.4.40.0070.01016.25
7.4.30.0030.01316.65
7.4.00.0090.00614.94
7.3.330.0000.00513.16
7.3.320.0060.00013.21
7.3.310.0070.00016.19
7.3.300.0040.00416.18
7.3.290.0070.00916.19
7.3.280.0110.00816.21
7.3.270.0070.01117.40
7.3.260.0120.01116.41
7.3.250.0110.00716.32
7.3.240.0060.01516.29
7.3.230.0130.01016.42
7.3.210.0120.00616.47
7.3.200.0060.01516.58
7.3.190.0110.01116.54
7.3.180.0130.00316.21
7.3.170.0100.00616.30
7.3.160.0060.01116.26
7.3.120.0090.00914.91
7.3.110.0070.01014.94
7.3.100.0030.01214.91
7.3.90.0070.00314.84
7.3.80.0090.00014.65
7.3.70.0040.00714.90
7.3.60.0080.00014.91
7.3.50.0080.00414.70
7.3.40.0120.00314.79
7.3.30.0100.00314.78
7.3.20.0140.00016.69
7.3.10.0050.00516.50
7.3.00.0060.00616.57
7.2.330.0150.00316.54
7.2.320.0070.01516.58
7.2.310.0030.01216.57
7.2.300.0120.01216.61
7.2.290.0090.00916.38
7.2.250.0000.01514.96
7.2.240.0130.00714.72
7.2.230.0120.00415.07
7.2.220.0070.01115.07
7.2.210.0070.00714.78
7.2.200.0030.01014.94
7.2.190.0030.00615.18
7.2.180.0040.01215.05
7.2.170.0070.00715.00
7.2.60.0060.00916.94
7.2.50.0110.00416.94
7.1.330.0090.00615.52
7.1.320.0040.01215.45
7.1.310.0040.00815.64
7.1.300.0030.00615.71
7.1.290.0030.00915.44
7.1.280.0080.00415.67
7.1.270.0030.01115.67
7.1.260.0000.00815.59
7.1.200.0070.00315.85
7.1.70.0000.00717.11
7.1.60.0000.01117.27
7.1.50.0080.00316.95
7.1.40.0050.00516.84
7.1.30.0060.01316.84
7.1.20.0030.01016.84
7.1.10.0000.00816.84
7.1.00.0030.01016.84
7.0.200.0000.01016.84
7.0.190.0000.00816.86
7.0.180.0060.00316.84
7.0.170.0030.00516.84
7.0.160.0030.00716.84
7.0.150.0040.00416.84
7.0.140.0000.01116.84
7.0.130.0050.00216.84
7.0.120.0000.00816.84
7.0.110.0000.01116.84
7.0.100.0020.00516.84
7.0.90.0030.00716.84
7.0.80.0040.00416.84
7.0.70.0050.00316.84
7.0.60.0040.00416.84
7.0.50.0000.00916.84
7.0.40.0040.00416.84
7.0.30.0050.00516.84
7.0.20.0060.00616.84
7.0.10.0050.00516.84
7.0.00.0000.00816.84
5.6.300.0030.04520.89
5.6.290.0000.06420.66
5.6.280.0100.03820.88
5.6.270.0070.03721.05
5.6.260.0040.04220.87
5.6.250.0000.05120.99
5.6.240.0070.04420.83
5.6.230.0030.05120.91
5.6.220.0060.04220.81
5.6.210.0170.04221.07
5.6.200.0000.05420.81
5.6.190.0030.04720.98
5.6.180.0030.04320.95
5.6.170.0140.04420.92
5.6.160.0070.03721.04
5.6.150.0070.04320.85
5.6.140.0030.04421.01
5.6.130.0070.03820.84
5.6.120.0030.05721.02
5.6.110.0030.04120.84
5.6.100.0030.04120.80
5.6.90.0100.03320.79
5.6.80.0060.03620.20
5.6.70.0060.03420.18
5.6.60.0270.04120.23
5.6.50.0000.04520.21
5.6.40.0070.04620.16
5.6.30.0000.05420.17
5.6.20.0000.04520.34
5.6.10.0030.03920.27
5.6.00.0070.04020.15
5.5.380.0060.03917.55
5.5.370.0100.05317.50
5.5.360.0000.05117.59
5.5.350.0060.04517.55
5.5.340.0000.04318.00
5.5.330.0070.04618.03
5.5.320.0070.04018.00
5.5.310.0070.04617.96
5.5.300.0000.04217.97
5.5.290.0090.03417.98
5.5.280.0060.04518.06
5.5.270.0030.04217.96
5.5.260.0060.04117.96
5.5.250.0000.04317.71
5.5.240.0060.03517.34
5.5.230.0030.03917.24
5.5.220.0070.03917.21
5.5.210.0030.03817.12
5.5.200.0040.03917.33
5.5.190.0100.03617.46
5.5.180.0060.03817.34
5.5.160.0000.04117.29
5.5.150.0060.03517.18
5.5.140.0070.03717.46
5.5.130.0030.03617.29
5.5.120.0030.04317.34
5.5.110.0030.03917.18
5.5.100.0000.03917.33
5.5.90.0000.03917.14
5.5.80.0130.04317.11
5.5.70.0070.03317.18
5.5.60.0030.03717.26
5.5.50.0030.03517.21
5.5.40.0100.03817.23
5.5.30.0070.03317.32
5.5.20.0100.03017.18
5.5.10.0000.04817.17
5.5.00.0030.04016.91
5.4.450.0030.04519.16
5.4.440.0000.04319.30
5.4.430.0100.04919.39
5.4.420.0230.03719.30
5.4.410.0000.04319.30
5.4.400.0000.06318.95
5.4.390.0030.04219.15
5.4.380.0030.04118.88
5.4.370.0070.03719.07
5.4.360.0170.04419.05
5.4.350.0000.04718.98
5.4.340.0030.04618.83
5.4.320.0000.05019.02
5.4.310.0060.03818.86
5.4.300.0030.04119.07
5.4.290.0000.04019.02
5.4.280.0070.05118.97
5.4.270.0100.04019.04
5.4.260.0070.03719.10
5.4.250.0060.03519.14
5.4.240.0000.04418.98
5.4.230.0000.04319.06
5.4.220.0130.03119.00
5.4.210.0130.04619.13
5.4.200.0040.04018.88
5.4.190.0030.03619.06
5.4.180.0100.03118.84
5.4.170.0060.03518.98
5.4.160.0060.03519.05
5.4.150.0030.04819.13
5.4.140.0000.04416.84
5.4.130.0030.03416.84
5.4.120.0000.04016.84
5.4.110.0000.04016.84
5.4.100.0000.03916.84
5.4.90.0000.04116.84
5.4.80.0030.03816.84
5.4.70.0070.03116.84
5.4.60.0030.03716.84
5.4.50.0030.03416.84
5.4.40.0000.04116.84
5.4.30.0070.03916.84
5.4.20.0000.03816.84
5.4.10.0030.08616.84
5.4.00.0100.04816.84
5.3.290.0030.04316.84
5.3.280.0070.03616.84
5.3.270.0030.04216.84
5.3.260.0000.04116.84
5.3.250.0000.04016.84
5.3.240.0070.03116.84
5.3.230.0030.03516.84
5.3.220.0160.03916.84
5.3.210.0030.04116.84
5.3.200.0070.03916.84
5.3.190.0000.04216.84
5.3.180.0000.03816.84
5.3.170.0030.03716.84
5.3.160.0000.04816.84
5.3.150.0000.03816.84
5.3.140.0030.03516.84
5.3.130.0030.03916.84
5.3.120.0030.07916.84
5.3.110.0000.04216.84
5.3.100.0000.04016.84
5.3.90.0030.03516.84
5.3.80.0100.02916.84
5.3.70.0090.03216.84
5.3.60.0000.04116.84
5.3.50.0000.03916.84
5.3.40.0100.04616.84
5.3.30.0000.03816.84
5.3.20.0000.04116.84
5.3.10.0000.03716.84
5.3.00.0030.03316.84
5.2.170.0030.02816.84
5.2.160.0030.02816.84
5.2.150.0000.03216.84
5.2.140.0030.03216.84
5.2.130.0070.02416.84
5.2.120.0000.03616.84
5.2.110.0070.04316.84
5.2.100.0030.03716.84
5.2.90.0000.03816.84
5.2.80.0030.04516.84
5.2.70.0030.02716.84
5.2.60.0030.03416.84
5.2.50.0030.02816.84
5.2.40.0030.03016.84
5.2.30.0060.02516.84
5.2.20.0030.02816.84
5.2.10.0000.03316.84
5.2.00.0030.03016.84
5.1.60.0030.02616.84
5.1.50.0000.02716.84
5.1.40.0000.02616.84
5.1.30.0000.02916.84
5.1.20.0030.02916.84
5.1.10.0030.02816.84
5.1.00.0030.05216.84
5.0.50.0030.03116.84
5.0.40.0030.02016.84
5.0.30.0000.03516.84
5.0.20.0030.01716.84
5.0.10.0000.03816.84
5.0.00.0000.03216.84
4.4.90.0030.02216.84
4.4.80.0030.01416.84
4.4.70.0170.00716.84
4.4.60.0100.01316.84
4.4.50.0000.01616.84
4.4.40.0040.02216.84
4.4.30.0000.01716.84
4.4.20.0070.02416.84
4.4.10.0000.02216.84
4.4.00.0000.03516.84
4.3.110.0040.01416.84
4.3.100.0030.01616.84
4.3.90.0030.03616.84
4.3.80.0000.02616.84
4.3.70.0000.01616.84
4.3.60.0030.01216.84
4.3.50.0000.01716.84
4.3.40.0000.02516.84
4.3.30.0000.01816.84
4.3.20.0000.01716.84
4.3.10.0000.01916.84
4.3.00.0000.01616.84

preferences:
64.84 ms | 400 KiB | 5 Q