3v4l.org

run code in 300+ PHP versions simultaneously
<?php $firstKey = array_keys($array)[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)
8.3.40.0120.00318.79
8.3.30.0090.01218.76
8.3.20.0070.01121.96
8.3.10.0060.00323.53
8.3.00.0040.00419.97
8.2.170.0040.01122.96
8.2.160.0130.00720.39
8.2.150.0060.01324.18
8.2.140.0040.00424.66
8.2.130.0090.00020.91
8.2.120.0050.00326.35
8.2.110.0030.00620.29
8.2.100.0080.00317.80
8.2.90.0040.00419.17
8.2.80.0000.00817.97
8.2.70.0090.00317.50
8.2.60.0040.00417.80
8.2.50.0080.00018.07
8.2.40.0070.00320.47
8.2.30.0070.00020.55
8.2.20.0070.00017.68
8.2.10.0000.00817.99
8.2.00.0040.00417.98
8.1.270.0100.01020.21
8.1.260.0180.00028.09
8.1.250.0040.00428.09
8.1.240.0000.00822.14
8.1.230.0040.00717.65
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0060.00317.13
8.1.190.0090.00017.10
8.1.180.0000.00818.10
8.1.170.0060.00318.59
8.1.160.0000.00720.70
8.1.150.0040.00418.69
8.1.140.0040.00419.46
8.1.130.0000.00717.55
8.1.120.0000.00717.23
8.1.110.0040.00417.34
8.1.100.0040.00417.36
8.1.90.0000.00717.26
8.1.80.0000.00717.30
8.1.70.0040.00417.27
8.1.60.0070.00017.33
8.1.50.0040.00417.50
8.1.40.0040.00417.43
8.1.30.0050.00317.57
8.1.20.0030.00617.44
8.1.10.0040.00417.43
8.1.00.0040.00417.37
8.0.300.0060.00318.77
8.0.290.0000.00716.63
8.0.280.0000.00718.43
8.0.270.0030.00317.13
8.0.260.0000.00617.18
8.0.250.0030.00316.95
8.0.240.0000.00716.96
8.0.230.0060.00317.01
8.0.220.0030.00316.88
8.0.210.0000.00716.86
8.0.200.0060.00016.78
8.0.190.0030.00516.83
8.0.180.0000.00716.93
8.0.170.0050.00216.93
8.0.160.0000.00816.96
8.0.150.0000.01016.84
8.0.140.0050.00316.86
8.0.130.0050.00013.30
8.0.120.0000.00816.83
8.0.110.0040.00416.96
8.0.100.0050.00216.94
8.0.90.0070.00016.86
8.0.80.0070.00716.84
8.0.70.0000.00716.91
8.0.60.0050.00316.87
8.0.50.0070.00016.71
8.0.30.0100.00916.89
8.0.20.0100.00817.40
8.0.10.0000.00716.96
8.0.00.0120.00616.63
7.4.330.0000.00516.77
7.4.320.0000.00716.46
7.4.300.0000.00616.44
7.4.290.0030.00316.57
7.4.280.0040.00416.32
7.4.270.0000.00816.58
7.4.260.0000.00716.35
7.4.250.0040.00416.54
7.4.240.0060.00216.56
7.4.230.0050.00216.61
7.4.220.0060.01216.55
7.4.210.0040.01216.47
7.4.200.0030.00316.55
7.4.160.0100.00716.38
7.4.150.0120.00617.40
7.4.140.0150.00517.86
7.4.130.0120.00816.47
7.4.120.0130.00716.44
7.4.110.0150.00416.44
7.4.100.0090.00816.33
7.4.90.0030.01316.50
7.4.80.0070.01519.39
7.4.70.0130.00316.51
7.4.60.0120.00416.57
7.4.50.0030.01216.48
7.4.40.0110.00516.53
7.4.30.0080.01616.42
7.4.00.0060.00314.82
7.3.330.0000.00512.98
7.3.320.0000.00613.10
7.3.310.0030.00316.32
7.3.300.0030.00316.35
7.3.290.0060.00816.26
7.3.280.0070.00916.27
7.3.270.0130.00417.40
7.3.260.0060.01316.41
7.3.250.0100.01116.36
7.3.240.0080.00916.39
7.3.230.0090.00916.39
7.3.210.0120.00616.36
7.3.200.0090.01216.20
7.3.190.0070.01016.52
7.3.180.0120.00416.31
7.3.170.0060.01016.41
7.3.160.0080.00916.29
7.3.10.0110.00316.77
7.3.00.0030.01116.65
7.2.330.0080.00816.15
7.2.320.0110.01416.61
7.2.310.0080.00816.55
7.2.300.0110.00716.29
7.2.290.0090.00916.56
7.2.130.0030.01016.62
7.2.120.0070.00316.88
7.2.110.0040.01116.88
7.2.100.0030.00916.80
7.2.90.0120.00016.86
7.2.80.0090.00316.80
7.2.70.0030.00717.09
7.2.60.0030.01016.61
7.2.50.0040.00716.82
7.2.40.0100.00316.79
7.2.30.0060.00916.87
7.2.20.0070.00316.66
7.2.10.0030.01016.75
7.2.00.0080.00718.20
7.1.250.0120.00315.92
7.1.200.0030.00615.56
7.1.100.0130.00318.02
7.1.70.0000.01017.28
7.1.60.0100.01319.13
7.1.50.0100.00716.69
7.1.00.0000.07722.35
7.0.200.0050.00516.50
7.0.60.0100.08020.01
7.0.50.0030.03717.80
7.0.40.0100.05020.10
7.0.30.0430.07720.09
7.0.20.0330.07720.00
7.0.10.0100.08020.09
7.0.00.0100.07320.00
5.6.280.0000.03320.97
5.6.210.0130.07320.63
5.6.200.0070.08718.13
5.6.190.0100.04720.61
5.6.180.0170.05020.41
5.6.170.0400.07320.45
5.6.160.0130.08020.41
5.6.150.0130.07018.18
5.6.140.0070.05018.18
5.6.130.0070.04318.21
5.6.120.0130.06720.96
5.6.110.0070.08321.00
5.6.100.0130.07721.12
5.6.90.0070.08320.98
5.6.80.0130.07720.50
5.5.350.0200.07720.43
5.5.340.0070.08017.88
5.5.330.0000.04720.19
5.5.320.0270.03720.24
5.5.310.0230.03720.20
5.5.300.0030.07317.88
5.5.290.0070.05017.91
5.5.280.0100.07720.76
5.5.270.0070.08320.86
5.5.260.0100.07320.85
5.5.250.0070.05320.70
5.5.240.0170.07720.23

preferences:
45.94 ms | 400 KiB | 5 Q