3v4l.org

run code in 300+ PHP versions simultaneously
<?php $keys = ['a','b','c','d','e','f','g','h','i','alias']; $private = ['a','b','c','d']; $aliases = [ 'alias' => 'real', 'foo' => 'bar' ]; $aliases = array_flip($aliases); print_r(array_intersect_key($aliases, array_flip($private)));

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)
8.3.60.0100.00716.38
8.3.50.0120.00521.92
8.3.40.0140.00018.51
8.3.30.0120.00319.00
8.3.20.0000.00820.33
8.3.10.0040.00421.95
8.3.00.0030.00519.38
8.2.180.0120.00318.13
8.2.170.0090.00922.96
8.2.160.0080.00620.28
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0090.00019.38
8.2.110.0060.00319.32
8.2.100.0110.00017.63
8.2.90.0030.00518.92
8.2.80.0000.00817.97
8.2.70.0080.00017.50
8.2.60.0060.00317.80
8.2.50.0030.00618.07
8.2.40.0030.00519.88
8.2.30.0040.00417.98
8.2.20.0000.00817.56
8.2.10.0040.00418.11
8.2.00.0000.00717.68
8.1.280.0070.01425.92
8.1.270.0000.00818.77
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0060.00322.14
8.1.230.0070.00419.44
8.1.220.0030.00617.74
8.1.210.0030.00518.77
8.1.200.0070.00317.22
8.1.190.0060.00317.13
8.1.180.0060.00318.10
8.1.170.0040.00419.02
8.1.160.0040.00421.82
8.1.150.0070.00018.88
8.1.140.0030.00517.31
8.1.130.0050.00317.87
8.1.120.0040.00417.46
8.1.110.0040.00417.42
8.1.100.0050.00317.24
8.1.90.0000.00817.28
8.1.80.0040.00417.38
8.1.70.0030.00317.30
8.1.60.0080.00017.55
8.1.50.0000.00717.41
8.1.40.0030.00617.40
8.1.30.0040.00417.54
8.1.20.0000.00817.54
8.1.10.0070.00017.50
8.1.00.0000.00717.29
8.0.300.0040.00418.77
8.0.290.0040.00416.58
8.0.280.0040.00418.28
8.0.270.0070.00017.09
8.0.260.0000.00617.06
8.0.250.0070.00016.80
8.0.240.0000.00616.84
8.0.230.0000.00716.77
8.0.220.0000.00716.81
8.0.210.0000.00716.67
8.0.200.0000.00616.88
8.0.190.0050.00316.76
8.0.180.0000.00716.79
8.0.170.0030.00516.80
8.0.160.0000.00916.84
8.0.150.0030.00316.81
8.0.140.0040.00316.67
8.0.130.0000.00513.21
8.0.120.0040.00416.82
8.0.110.0000.00816.71
8.0.100.0040.00416.77
8.0.90.0080.00016.74
8.0.80.0070.01416.80
8.0.70.0030.00516.94
8.0.60.0000.00716.83
8.0.50.0050.00316.88
8.0.30.0130.00816.92
8.0.20.0120.00717.40
8.0.10.0070.00016.83
8.0.00.0100.00716.73
7.4.330.0000.00515.03
7.4.320.0030.00316.56
7.4.300.0070.00016.34
7.4.290.0030.00316.42
7.4.280.0000.00816.55
7.4.270.0000.00616.48
7.4.260.0000.00816.51
7.4.250.0000.00716.54
7.4.240.0040.00316.42
7.4.230.0030.00316.61
7.4.220.0070.01916.39
7.4.210.0130.00716.65
7.4.200.0000.00716.43
7.4.150.0130.00517.40
7.4.140.0110.01117.86
7.4.130.0070.01216.43
7.4.120.0080.00916.46
7.4.110.0130.00916.59
7.4.100.0070.01016.49
7.4.90.0100.00716.37
7.4.80.0060.01519.39
7.4.70.0030.01216.47
7.4.60.0060.01016.38
7.4.50.0000.00416.27
7.4.40.0100.00716.16
7.4.30.0160.00616.37
7.4.00.0070.01114.63
7.3.330.0000.00612.90
7.3.320.0100.00312.91
7.3.310.0000.00716.21
7.3.300.0030.00316.16
7.3.290.0030.01316.15
7.3.280.0090.00516.17
7.3.270.0280.00717.40
7.3.260.0080.00816.11
7.3.250.0090.00816.21
7.3.240.0060.01116.17
7.3.230.0070.01616.39
7.3.210.0100.01316.07
7.3.200.0130.00919.39
7.3.190.0120.01216.11
7.3.180.0120.00816.27
7.3.170.0080.01516.27
7.3.160.0070.01016.19
7.2.330.0170.00016.59
7.2.320.0070.01016.55
7.2.310.0130.00316.49
7.2.300.0070.01016.24
7.2.290.0070.01516.41
7.2.60.0070.00716.59
7.2.00.0040.00819.35
7.1.200.0080.00015.66
7.1.100.0050.00518.14
7.1.70.0040.00417.19
7.1.60.0110.01419.50
7.1.50.0100.01316.63
7.1.00.0000.08022.57
7.0.200.0200.00316.60
7.0.140.0030.07322.01
7.0.60.0070.08319.93
7.0.50.0130.06717.84
7.0.40.0030.04720.26
7.0.30.0200.06720.13
7.0.20.0170.08720.30
7.0.10.0330.08020.12
7.0.00.0130.07720.12
5.6.280.0030.07321.02
5.6.210.0200.06720.76
5.6.200.0070.04018.17
5.6.190.0130.08320.57
5.6.180.0300.07720.53
5.6.170.0370.06320.52
5.6.160.0030.04720.50
5.6.150.0170.07318.19
5.6.140.0100.03718.07
5.6.130.0070.08318.11
5.6.120.0130.05721.11
5.6.110.0130.05320.89
5.6.100.0100.08021.00
5.6.90.0030.05320.97
5.6.80.0130.07320.41
5.6.70.0170.04320.43
5.5.350.0170.03720.37
5.5.340.0030.08718.07
5.5.330.0070.08020.21
5.5.320.0030.05720.15
5.5.310.0170.04320.23
5.5.300.0030.05717.98
5.5.290.0070.08318.02
5.5.280.0030.08720.88
5.5.270.0100.03720.77
5.5.260.0070.04320.72
5.5.250.0070.07320.70
5.5.240.0000.04020.24
5.4.450.3830.04019.38
5.4.440.3630.04019.24
5.4.430.3200.03019.45
5.4.420.3030.04719.24
5.4.410.3630.04319.00
5.4.400.3330.04019.11
5.4.390.3500.03018.79
5.4.380.3770.04019.08
5.4.370.3530.03719.13
5.4.360.3370.04019.21
5.4.350.3570.03718.79
5.4.340.3630.04018.88
5.4.320.3930.05019.09
5.4.310.3870.03318.92
5.4.300.3430.03318.88
5.4.290.3830.03319.05
5.4.280.3830.03019.08
5.4.270.3430.03719.21
5.4.260.3670.03719.13
5.4.250.3600.04018.78
5.4.240.3830.03319.17
5.4.230.3430.03718.89
5.4.220.3770.03719.17
5.4.210.4300.03319.08
5.4.200.3530.02719.08
5.4.190.4030.04319.09
5.4.180.4430.03318.81
5.4.170.4400.04319.15
5.4.160.4030.04319.07
5.4.150.3900.04319.06
5.4.140.3470.03316.38
5.4.130.3770.04016.22
5.4.120.3600.03716.43
5.4.110.3570.04016.46
5.4.100.3970.03316.45
5.4.90.3700.03016.43
5.4.80.3970.02016.48
5.4.70.3970.03716.37
5.4.60.3600.04016.28
5.4.50.3670.03316.36
5.4.40.3970.02716.32
5.4.30.2970.04016.34
5.4.20.3730.03016.44
5.4.10.3570.03316.27
5.4.00.3730.03715.99
5.3.290.3370.04314.54
5.3.280.3530.03714.46
5.3.270.4000.03314.58
5.3.260.3930.03714.43
5.3.250.3600.04314.56
5.3.240.3230.04014.56
5.3.230.3730.03314.43
5.3.220.3730.03714.43
5.3.210.3670.03714.42
5.3.200.3800.05014.43
5.3.190.3400.04014.66
5.3.180.3670.03714.50
5.3.170.3200.04014.51
5.3.160.3470.03714.62
5.3.150.3430.03714.44
5.3.140.3770.04014.51
5.3.130.3800.03314.42
5.3.120.3730.04314.39
5.3.110.3400.04014.39
5.3.100.3200.03313.99
5.3.90.3700.04014.00
5.3.80.3830.03313.97
5.3.70.3730.03714.00
5.3.60.3600.03713.89
5.3.50.3530.03313.89
5.3.40.3530.04013.74
5.3.30.0030.07313.75
5.3.20.0030.05713.78
5.3.10.3670.03713.64
5.3.00.3630.03713.49
5.2.170.3070.02311.00
5.2.160.2700.03711.20
5.2.150.2830.02711.16
5.2.140.0000.03711.23
5.2.130.0970.03311.15
5.2.120.3030.03011.15
5.2.110.3770.03011.01
5.2.100.2830.02710.96
5.2.90.2530.02711.12
5.2.80.3270.02311.11
5.2.70.3100.03010.93
5.2.60.4500.02011.00
5.2.50.3470.03310.86
5.2.40.2500.02710.85
5.2.30.2600.02310.81
5.2.20.2430.02710.89
5.2.10.2430.02310.82
5.2.00.2370.02010.61
5.1.60.2370.0209.96
5.1.50.2270.0279.87
5.1.40.2330.0279.90
5.1.30.2430.02010.38
5.1.20.2100.02710.35
5.1.10.2330.02310.05
5.1.00.0000.02710.14
5.0.50.0000.0208.73
5.0.40.0000.0238.73
5.0.30.0000.0308.73
5.0.20.0000.0208.73
5.0.10.1100.0238.73
5.0.00.1170.0308.73
4.4.90.1470.0178.73
4.4.80.1500.0178.73
4.4.70.1100.0178.73
4.4.60.1330.0208.73
4.4.50.1200.0108.73
4.4.40.1330.0308.73
4.4.30.1170.0108.73
4.4.20.1170.0138.73
4.4.10.0030.0208.73
4.4.00.0000.0238.73
4.3.110.0000.0208.73
4.3.100.0030.0138.73
4.3.90.0600.0138.73
4.3.80.1130.0238.73
4.3.70.1100.0178.73
4.3.60.1130.0138.73
4.3.50.1130.0178.73
4.3.40.1200.0238.73
4.3.30.0570.0178.73
4.3.20.0530.0178.73
4.3.10.0570.0138.73
4.3.00.0600.0108.73

preferences:
40.76 ms | 401 KiB | 5 Q