3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => 'one', 'b' => 'two'); var_dump(array_keys($a)); var_dump(array_keys($a, null));

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)
8.3.60.0110.00418.30
8.3.50.0120.00622.05
8.3.40.0100.00718.45
8.3.30.0120.00318.62
8.3.20.0000.00818.52
8.3.10.0080.00020.83
8.3.00.0040.00419.43
8.2.180.0080.01218.29
8.2.170.0070.00722.96
8.2.160.0100.00320.53
8.2.150.0070.00024.18
8.2.140.0000.00924.66
8.2.130.0040.00426.16
8.2.120.0050.00221.00
8.2.110.0070.00420.49
8.2.100.0060.00617.59
8.2.90.0040.00418.97
8.2.80.0050.00317.97
8.2.70.0060.00317.50
8.2.60.0030.00517.80
8.2.50.0060.00318.07
8.2.40.0080.00018.16
8.2.30.0070.00019.38
8.2.20.0070.00017.46
8.2.10.0000.00717.50
8.2.00.0030.00617.60
8.1.280.0120.00325.92
8.1.270.0000.00723.99
8.1.260.0080.00026.35
8.1.250.0000.00828.09
8.1.240.0050.00522.46
8.1.230.0110.00020.90
8.1.220.0050.00318.77
8.1.210.0000.00818.85
8.1.200.0090.00017.10
8.1.190.0080.00017.41
8.1.180.0040.00418.10
8.1.170.0030.00618.51
8.1.160.0040.00418.91
8.1.150.0040.00418.57
8.1.140.0040.00417.29
8.1.130.0030.00317.81
8.1.120.0050.00217.38
8.1.110.0040.00417.38
8.1.100.0080.00017.38
8.1.90.0030.00417.37
8.1.80.0000.00717.40
8.1.70.0030.00317.36
8.1.60.0030.00617.41
8.1.50.0000.00717.40
8.1.40.0080.00017.47
8.1.30.0040.00417.55
8.1.20.0000.00817.41
8.1.10.0000.00717.34
8.1.00.0080.00017.26
8.0.300.0040.00419.81
8.0.290.0040.00417.04
8.0.280.0070.00018.36
8.0.270.0000.00717.18
8.0.260.0060.00316.73
8.0.250.0050.00316.92
8.0.240.0080.00016.79
8.0.230.0040.00416.91
8.0.220.0000.00816.71
8.0.210.0030.00316.74
8.0.200.0030.00316.82
8.0.190.0000.00816.86
8.0.180.0040.00416.82
8.0.170.0040.00416.71
8.0.160.0030.00316.71
8.0.150.0080.00016.75
8.0.140.0040.00416.86
8.0.130.0050.00013.24
8.0.120.0040.00416.67
8.0.110.0050.00316.69
8.0.100.0070.00016.88
8.0.90.0050.00216.81
8.0.80.0100.01316.86
8.0.70.0050.00216.71
8.0.60.0000.00816.64
8.0.50.0070.00016.71
8.0.30.0100.00816.90
8.0.20.0140.00917.40
8.0.10.0040.00417.03
8.0.00.0040.01316.54
7.4.330.0000.00415.09
7.4.320.0000.00616.39
7.4.300.0030.00316.43
7.4.290.0050.00216.56
7.4.280.0030.00316.53
7.4.270.0030.00316.43
7.4.260.0070.00013.13
7.4.250.0040.00416.49
7.4.240.0000.00716.58
7.4.230.0000.00716.28
7.4.220.0120.00616.36
7.4.210.0110.00616.43
7.4.200.0000.00716.42
7.4.190.0000.00716.39
7.4.160.0120.00616.36
7.4.150.0040.01417.40
7.4.140.0090.00817.86
7.4.130.0040.01416.44
7.4.120.0020.01516.48
7.4.110.0150.00616.30
7.4.100.0060.01016.45
7.4.90.0090.00916.43
7.4.80.0070.01019.39
7.4.70.0030.01316.27
7.4.60.0100.00616.45
7.4.50.0060.00316.51
7.4.40.0120.00322.77
7.4.30.0030.01316.36
7.4.00.0000.01315.00
7.3.330.0000.00512.93
7.3.320.0030.00312.97
7.3.310.0000.00615.97
7.3.300.0050.00216.14
7.3.290.0050.00916.13
7.3.280.0090.00716.09
7.3.270.0140.00417.40
7.3.260.0100.00918.24
7.3.250.0120.00616.16
7.3.240.0170.00416.41
7.3.230.0090.00916.39
7.3.210.0090.00616.31
7.3.200.0080.01419.39
7.3.190.0100.00716.29
7.3.180.0030.01216.02
7.3.170.0040.01116.27
7.3.160.0100.01316.10
7.3.120.0090.00614.79
7.2.330.0070.01116.36
7.2.320.0090.01216.60
7.2.310.0100.01016.17
7.2.300.0090.00916.51
7.2.290.0060.01116.52
7.2.60.0030.01016.82
7.2.00.0040.00819.39
7.1.200.0080.00315.61
7.1.100.0000.01718.05
7.1.70.0000.00816.81
7.1.60.0060.00617.09
7.1.50.0060.01616.81
7.1.00.0130.06722.48
7.0.200.0060.00316.72
7.0.140.0130.06021.96
7.0.80.0570.08319.87
7.0.70.0530.07319.97
7.0.60.0630.08019.88
7.0.50.0230.05720.30
7.0.40.0030.07020.10
7.0.30.0030.05020.14
7.0.20.0030.04720.18
7.0.10.0200.07020.11
7.0.00.0100.06719.95
5.6.280.0000.07721.02
5.6.230.0000.07020.50
5.6.220.0100.06020.66
5.6.210.0230.07320.64
5.6.200.0070.05321.13
5.6.190.0100.08321.16
5.6.180.0030.05020.93
5.6.170.0130.06321.07
5.6.160.0100.08320.93
5.6.150.0130.03721.08
5.6.140.0070.05721.02
5.6.130.0100.04021.12
5.6.120.0100.04021.04
5.6.110.0030.08321.12
5.6.100.0130.06320.97
5.6.90.0130.07720.99
5.6.80.0030.04320.39
5.6.70.0070.03720.46
5.6.60.0070.07720.47
5.6.50.0100.07720.29
5.6.40.0000.04320.43
5.6.30.0030.03320.40
5.6.20.0070.07720.51
5.6.10.0230.05320.41
5.6.00.0100.06320.43
5.5.370.0200.07720.34
5.5.360.0100.06320.40
5.5.350.0030.04720.36
5.5.340.0070.07320.89
5.5.330.0030.06320.76
5.5.320.0130.08020.92
5.5.310.0000.05320.75
5.5.300.0030.04020.86
5.5.290.0100.07020.75
5.5.280.0030.08720.85
5.5.270.0070.07720.90
5.5.260.0070.08720.75
5.5.250.0070.08320.63
5.5.240.0100.04020.11
5.5.230.0100.03320.23
5.5.220.0130.07320.14
5.5.210.0100.07720.29
5.5.200.0070.05320.25
5.5.190.0030.03320.14
5.5.180.0030.03320.18
5.5.160.0130.03320.24
5.5.150.0070.05720.14
5.5.140.0030.04020.14
5.5.130.0070.06320.11
5.5.120.0070.03720.16
5.5.110.0070.05320.25
5.5.100.0130.02320.16
5.5.90.0100.03020.09
5.5.80.0070.04719.96
5.5.70.0100.07720.03
5.5.60.0100.08020.07
5.5.50.0100.07020.09
5.5.40.0030.04020.14
5.5.30.0030.04720.10
5.5.20.0070.04020.09
5.5.10.0070.05320.03
5.5.00.0100.05320.03
5.4.450.0070.06319.27
5.4.440.0100.05019.55
5.4.430.0070.03719.36
5.4.420.0130.05719.24
5.4.410.0070.03019.31
5.4.400.0070.03718.95
5.4.390.0000.04719.04
5.4.380.0030.04018.96
5.4.370.0100.06319.23
5.4.360.0130.03319.05
5.4.350.0030.03319.03
5.4.340.0000.03718.98
5.4.320.0030.07019.03
5.4.310.0070.07719.22
5.4.300.0100.03719.07
5.4.290.0070.07018.78
5.4.280.0030.08319.02
5.4.270.0070.07319.09
5.4.260.0070.07019.22
5.4.250.0070.03019.05
5.4.240.0030.04718.80
5.4.230.0030.05319.14
5.4.220.0000.04318.80
5.4.210.0070.06318.93
5.4.200.0000.04018.80
5.4.190.0070.03318.95
5.4.180.0070.07319.03
5.4.170.0100.03019.14
5.4.160.0030.06019.04
5.4.150.0030.04319.05
5.4.140.0030.05016.38
5.4.130.0030.06016.32
5.4.120.0030.03716.46
5.4.110.0130.07016.26
5.4.100.0100.07016.44
5.4.90.0030.07016.22
5.4.80.0000.04016.36
5.4.70.0100.03716.36
5.4.60.0070.04016.18
5.4.50.0000.04716.19
5.4.40.0000.03316.51
5.4.30.0030.06716.23
5.4.20.0130.03016.28
5.4.10.0030.04316.30
5.4.00.0100.06015.82
5.3.290.0030.06014.53
5.3.280.0030.04714.57
5.3.270.0000.05014.59
5.3.260.0100.03314.62
5.3.250.0030.03714.56
5.3.240.0030.04014.45
5.3.230.0000.04014.46
5.3.220.0070.07014.55
5.3.210.0030.06014.55
5.3.200.0100.07314.54
5.3.190.0070.04714.55
5.3.180.0030.06314.52
5.3.170.0000.06714.47
5.3.160.0000.04014.42
5.3.150.0070.03314.49
5.3.140.0100.07014.37
5.3.130.0000.04314.50
5.3.120.0000.06014.48
5.3.110.0000.04014.40
5.3.100.0070.06313.89
5.3.90.0030.04013.95
5.3.80.0000.04313.87
5.3.70.0030.03713.88
5.3.60.0070.04013.86
5.3.50.0030.03713.91
5.3.40.0100.06713.94
5.3.30.0000.05313.76
5.3.20.0030.03013.68
5.3.10.0030.03013.65
5.3.00.0030.03013.59
5.2.170.0070.02711.77
5.2.160.0000.03011.77
5.2.150.0030.06711.77
5.2.140.0070.03711.77
5.2.130.0030.02311.77
5.2.120.0070.04711.77
5.2.110.0070.05311.77
5.2.100.0070.02311.77
5.2.90.0070.05711.77
5.2.80.0030.06311.77
5.2.70.0030.06711.77
5.2.60.0000.03311.77
5.2.50.0030.02711.77
5.2.40.0030.03011.77
5.2.30.0000.03011.77
5.2.20.0030.04011.77
5.2.10.0030.02311.77
5.2.00.0070.02711.77
5.1.60.0000.02711.77
5.1.50.0030.02011.77
5.1.40.0030.02011.77
5.1.30.0030.06011.77
5.1.20.0000.06011.77
5.1.10.0070.03011.77
5.1.00.0130.03311.77
5.0.50.0030.03311.77
5.0.40.0030.02711.77
5.0.30.0030.06311.77
5.0.20.0000.03711.77
5.0.10.0030.02311.77
5.0.00.0030.06311.77
4.4.90.0000.02711.77
4.4.80.0000.02711.77
4.4.70.0070.00711.77
4.4.60.0030.03311.77
4.4.50.0000.02711.77
4.4.40.0030.02011.77
4.4.30.0000.02011.77
4.4.20.0000.04311.77
4.4.10.0000.04011.77
4.4.00.0000.04711.77
4.3.110.0000.03311.77
4.3.100.0000.02011.77
4.3.90.0030.01311.77
4.3.80.0000.02711.77
4.3.70.0000.03711.77
4.3.60.0030.03311.77
4.3.50.0000.03011.77
4.3.40.0000.03011.77
4.3.30.0000.04011.77
4.3.20.0030.02011.77
4.3.10.0000.03011.77
4.3.00.0030.02011.77

preferences:
46.94 ms | 400 KiB | 5 Q