3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = ['','',2]; echo json_encode(array_keys(array_flip(array_flip($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)
8.3.70.0110.00416.58
8.3.60.0070.01418.27
8.3.50.0120.00621.14
8.3.40.0100.01318.57
8.3.30.0030.01020.11
8.3.20.0080.00820.53
8.3.10.0040.00420.91
8.3.00.0040.00423.66
8.2.180.0070.01418.29
8.2.170.0030.01022.96
8.2.160.0070.01020.58
8.2.150.0040.00424.18
8.2.140.0110.00424.66
8.2.130.0070.00026.16
8.2.120.0040.00421.07
8.2.110.0030.00619.31
8.2.100.0090.00317.84
8.2.90.0030.00619.22
8.2.80.0040.00418.04
8.2.70.0000.01017.63
8.2.60.0050.00517.80
8.2.50.0000.00818.07
8.2.40.0000.00818.22
8.2.30.0040.00419.43
8.2.20.0050.00317.59
8.2.10.0000.00717.66
8.2.00.0060.00317.54
8.1.280.0130.00325.92
8.1.270.0050.00323.99
8.1.260.0040.00426.35
8.1.250.0020.00528.09
8.1.240.0110.00020.76
8.1.230.0070.00420.90
8.1.220.0040.00418.77
8.1.210.0030.00618.77
8.1.200.0030.00617.00
8.1.190.0040.00417.40
8.1.180.0030.00618.10
8.1.170.0030.00518.59
8.1.160.0070.00018.81
8.1.150.0070.00018.47
8.1.140.0000.00717.38
8.1.130.0070.00017.80
8.1.120.0000.00717.29
8.1.110.0030.00517.27
8.1.100.0040.00417.36
8.1.90.0090.00017.38
8.1.80.0070.00017.41
8.1.70.0000.00717.24
8.1.60.0080.00017.39
8.1.50.0000.00817.46
8.1.40.0040.00417.46
8.1.30.0050.00317.50
8.1.20.0050.00317.48
8.1.10.0040.00417.52
8.1.00.0000.00817.40
8.0.300.0070.00020.07
8.0.290.0040.00417.18
8.0.280.0070.00018.43
8.0.270.0070.00017.11
8.0.260.0030.00516.72
8.0.250.0080.00016.93
8.0.240.0040.00416.95
8.0.230.0030.00316.78
8.0.220.0030.00316.80
8.0.210.0030.00516.88
8.0.200.0040.00416.92
8.0.190.0000.00816.94
8.0.180.0050.00216.71
8.0.170.0000.00716.71
8.0.160.0000.00716.90
8.0.150.0080.00016.72
8.0.140.0030.00916.64
8.0.130.0030.00313.33
8.0.120.0000.00816.75
8.0.110.0040.00416.85
8.0.100.0040.00416.66
8.0.90.0070.00016.76
8.0.80.0040.01116.86
8.0.70.0050.00316.70
8.0.60.0040.00416.66
8.0.50.0050.00216.64
8.0.30.0130.00517.09
8.0.20.0110.00617.40
8.0.10.0070.00016.94
8.0.00.0100.00916.74
7.4.330.0000.00514.98
7.4.320.0070.00016.43
7.4.300.0000.00716.52
7.4.290.0000.00716.53
7.4.280.0030.00316.33
7.4.270.0030.00316.36
7.4.260.0050.00013.22
7.4.250.0070.00016.38
7.4.240.0000.00816.53
7.4.230.0000.00716.54
7.4.220.0120.00916.51
7.4.210.0060.01116.45
7.4.200.0030.00316.46
7.4.190.0030.00316.32
7.4.160.0070.01516.44
7.4.150.0330.01317.40
7.4.140.0130.00517.86
7.4.130.0020.01516.40
7.4.120.0070.01116.41
7.4.110.0090.01216.56
7.4.100.0040.01616.45
7.4.90.0130.00616.55
7.4.80.0080.01119.39
7.4.70.0100.00616.41
7.4.60.0090.00916.47
7.4.50.0000.00816.34
7.4.40.0000.01322.77
7.4.30.0120.00616.23
7.4.00.0060.01214.93
7.3.330.0000.00513.11
7.3.320.0030.00313.07
7.3.310.0040.00416.21
7.3.300.0040.00416.11
7.3.290.0000.01316.08
7.3.280.0080.00916.13
7.3.270.0070.01017.40
7.3.260.0110.00918.24
7.3.250.0070.01016.43
7.3.240.0060.01315.97
7.3.230.0100.01016.43
7.3.210.0030.01316.16
7.3.200.0110.01119.39
7.3.190.0090.00616.08
7.3.180.0110.00716.46
7.3.170.0040.01116.30
7.3.160.0180.00516.38
7.3.120.0070.00714.57
7.3.10.0090.00616.67
7.3.00.0060.00616.43
7.2.330.0110.00716.52
7.2.320.0160.00516.64
7.2.310.0070.01416.30
7.2.300.0120.01116.52
7.2.290.0120.00316.51
7.2.130.0030.01016.77
7.2.120.0100.00716.84
7.2.110.0070.00716.76
7.2.100.0040.01116.76
7.2.90.0000.01316.52
7.2.80.0030.01016.89
7.2.70.0000.01516.97
7.2.60.0070.00416.46
7.2.50.0000.01416.76
7.2.40.0130.00316.61
7.2.30.0040.01116.93
7.2.20.0000.01116.57
7.2.10.0030.01016.59
7.2.00.0030.01218.08
7.1.250.0060.00315.69
7.1.100.0060.00618.14
7.1.70.0000.00916.83
7.1.60.0110.01419.17
7.1.50.0030.01416.93
7.1.00.0070.05322.31
7.0.200.0030.00616.80
7.0.140.0000.07322.05
7.0.90.0100.08019.88
7.0.80.0070.06019.95
7.0.70.0570.04019.99
7.0.60.0500.06319.88
7.0.50.0570.05020.35
7.0.40.0170.06720.04
7.0.30.0100.07720.10
7.0.20.0070.08320.15
7.0.10.0130.07719.95
7.0.00.0130.08020.04
5.6.280.0130.08321.14
5.6.240.0170.07320.71
5.6.230.0000.08020.65
5.6.220.0130.07020.48
5.6.210.0000.09020.75
5.6.200.0130.06321.00
5.6.190.0130.07021.07
5.6.180.0170.07020.95
5.6.170.0130.07321.09
5.6.160.0130.06721.03
5.6.150.0070.08021.11
5.6.140.0070.05321.05
5.6.130.0130.07021.01
5.6.120.0130.07320.95
5.6.110.0000.09021.09
5.6.100.0100.07720.89
5.6.90.0100.07321.07
5.6.80.0130.07320.48
5.6.70.0070.06320.39
5.6.60.0100.07020.31
5.6.50.0100.05020.31
5.6.40.0130.07020.23
5.6.30.0170.07320.39
5.6.20.0200.06720.36
5.6.10.0030.06020.45
5.6.00.0100.07320.33
5.5.380.0070.06720.56
5.5.370.0270.05720.46
5.5.360.0100.07720.52
5.5.350.0130.07720.36
5.5.340.0070.07720.73
5.5.330.0070.08320.86
5.5.320.0100.05720.80
5.5.310.0130.07320.78
5.5.300.0100.07720.63
5.5.290.0070.08020.85
5.5.280.0130.04720.86
5.5.270.0100.04020.78
5.5.260.0030.05020.87
5.5.250.0100.04320.68
5.5.240.0070.07720.14
5.5.230.0200.04720.15
5.5.220.0130.06320.25
5.5.210.0100.07320.23
5.5.200.0070.08320.21
5.5.190.0070.08020.23
5.5.180.0070.05720.10
5.5.160.0130.07320.23
5.5.150.0170.05720.14
5.5.140.0130.07320.24
5.5.130.0130.06720.26
5.5.120.0130.08020.07
5.5.110.0130.07720.13
5.5.100.0170.06719.94
5.5.90.0100.06020.12
5.5.80.0030.07320.05
5.5.70.0130.06720.14
5.5.60.0130.06320.07
5.5.50.0000.07720.04
5.5.40.0070.08020.07
5.5.30.0130.07720.07
5.5.20.0070.05320.02
5.5.10.0100.06720.09
5.5.00.0100.04020.03
5.4.450.0070.05019.55
5.4.440.0130.07319.34
5.4.430.0100.06019.38
5.4.420.0200.05719.38
5.4.410.0070.07319.01
5.4.400.0070.06719.05
5.4.390.0130.06719.08
5.4.380.0000.06719.14
5.4.370.0170.06719.07
5.4.360.0170.06719.12
5.4.350.0130.07319.09
5.4.340.0000.06719.07
5.4.320.0070.07719.06
5.4.310.0030.06318.96
5.4.300.0070.05318.78
5.4.290.0230.06019.07
5.4.280.0070.07319.17
5.4.270.0070.04719.14
5.4.260.0030.06318.96
5.4.250.0130.07019.14
5.4.240.0070.05019.02
5.4.230.0130.07019.24
5.4.220.0100.05319.02
5.4.210.0070.05019.11
5.4.200.0100.05319.02
5.4.190.0100.06018.77
5.4.180.0170.03018.97
5.4.170.0030.05319.11
5.4.160.0130.06319.09
5.4.150.0100.07318.79
5.4.140.0000.07316.29
5.4.130.0100.06716.07
5.4.120.0070.07716.28
5.4.110.0100.05016.36
5.4.100.0030.06016.45
5.4.90.0070.06716.34
5.4.80.0030.07316.20
5.4.70.0070.05016.39
5.4.60.0170.06016.28
5.4.50.0130.06016.38
5.4.40.0130.06716.23
5.4.30.0130.07016.27
5.4.20.0070.06016.20
5.4.10.0070.06716.38
5.4.00.0130.06315.76
5.3.290.0070.06014.66
5.3.280.0000.04714.57
5.3.270.0070.07714.44
5.3.260.0000.05014.44
5.3.250.0200.03014.46
5.3.240.0100.07014.43
5.3.230.0000.05014.43
5.3.220.0070.07314.53
5.3.210.0200.05014.55
5.3.200.0070.07714.53
5.3.190.0070.07714.56
5.3.180.0000.04314.47
5.3.170.0100.04014.40
5.3.160.0130.06014.55
5.3.150.0030.07714.50
5.3.140.0000.05314.53
5.3.130.0000.05314.38
5.3.120.0070.08014.41
5.3.110.0070.07014.38
5.3.100.0030.07714.00
5.3.90.0100.03313.93
5.3.80.0070.06314.02
5.3.70.0000.04014.00
5.3.60.0070.03313.75
5.3.50.0000.05013.94
5.3.40.0000.04013.90
5.3.30.0130.02713.85
5.3.20.0030.05013.60
5.3.10.0070.03013.63
5.3.00.0000.04013.60
5.2.170.0070.03011.19
5.2.160.0030.04011.21
5.2.150.0030.03010.99
5.2.140.0100.02311.18
5.2.130.0030.03311.15
5.2.120.0070.02711.16
5.2.110.0030.02711.08
5.2.100.0030.02711.07
5.2.90.0030.02711.12
5.2.80.0000.03011.01
5.2.70.0000.04311.01
5.2.60.0030.03710.97
5.2.50.0000.03311.01
5.2.40.0030.04010.98
5.2.30.0000.04011.02
5.2.20.0030.05710.95
5.2.10.0070.05710.71
5.2.00.0070.05710.64
5.1.60.0000.0279.82
5.1.50.0100.0479.88
5.1.40.0000.0279.82
5.1.30.0070.04710.34
5.1.20.0070.04310.42
5.1.10.0000.02310.05
5.1.00.0070.02310.06
5.0.50.0000.0208.55
5.0.40.0000.0208.45
5.0.30.0070.0478.10
5.0.20.0000.0338.23
5.0.10.0000.0278.27
5.0.00.0030.0638.16
4.4.90.0000.0177.39
4.4.80.0000.0207.39
4.4.70.0000.0207.39
4.4.60.0030.0277.39
4.4.50.0000.0177.39
4.4.40.0030.0507.39
4.4.30.0000.0377.39
4.4.20.0030.0137.39
4.4.10.0030.0137.39
4.4.00.0030.0237.39
4.3.110.0000.0137.39
4.3.100.0030.0337.39
4.3.90.0000.0207.39
4.3.80.0030.0307.39
4.3.70.0030.0107.39
4.3.60.0000.0207.39
4.3.50.0000.0137.39
4.3.40.0000.0277.39
4.3.30.0030.0177.39
4.3.20.0030.0137.39
4.3.10.0000.0137.39
4.3.00.0000.0277.39

preferences:
47.07 ms | 401 KiB | 5 Q