3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array ( 0 => 'nested array', 1 => 'nested array', 2 => 'nested array', 3 => 'nested array', 4 => 'nested array', 5 => 'nested array', ); var_dump(key(array_diff(array_keys(array_values($arr)), array_keys($arr))));

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)
8.3.60.0130.00718.18
8.3.50.0110.00721.21
8.3.40.0070.01418.71
8.3.30.0080.00818.84
8.3.20.0070.00720.17
8.3.10.0080.00022.04
8.3.00.0080.00022.40
8.2.180.0110.00716.75
8.2.170.0090.00922.96
8.2.160.0100.00320.39
8.2.150.0090.00624.18
8.2.140.0150.00724.66
8.2.130.0030.01426.16
8.2.120.0180.00419.50
8.2.110.0060.00321.98
8.2.100.0040.00819.32
8.2.90.0000.00719.09
8.2.80.0080.00019.23
8.2.70.0030.00617.63
8.2.60.0070.00017.91
8.2.50.0000.00818.07
8.2.40.0030.00518.22
8.2.30.0020.00518.05
8.2.20.0040.00417.59
8.2.10.0040.00417.68
8.2.00.0070.00317.66
8.1.280.0110.00325.92
8.1.270.0140.00420.32
8.1.260.0040.00426.35
8.1.250.0000.01328.09
8.1.240.0070.00323.84
8.1.230.0070.00419.10
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00617.34
8.1.190.0080.00017.38
8.1.180.0040.00420.20
8.1.170.0000.01118.51
8.1.160.0030.00322.04
8.1.150.0050.00218.53
8.1.140.0000.00717.29
8.1.130.0070.00017.74
8.1.120.0000.00717.34
8.1.110.0040.00417.36
8.1.100.0050.00317.38
8.1.90.0040.00417.35
8.1.80.0070.00017.29
8.1.70.0030.00317.35
8.1.60.0000.00817.52
8.1.50.0080.00017.37
8.1.40.0080.00017.43
8.1.30.0000.00717.49
8.1.20.0040.00417.54
8.1.10.0000.00717.38
8.1.00.0060.00617.39
8.0.300.0070.00018.77
8.0.290.0000.00717.15
8.0.280.0080.00018.37
8.0.270.0000.00717.23
8.0.260.0030.00316.81
8.0.250.0000.00716.78
8.0.240.0040.00416.87
8.0.230.0040.00416.71
8.0.220.0000.00616.82
8.0.210.0030.00316.82
8.0.200.0070.00016.82
8.0.190.0000.00716.84
8.0.180.0040.00416.90
8.0.170.0040.00416.82
8.0.160.0030.00316.75
8.0.150.0000.00716.89
8.0.140.0000.00816.77
8.0.130.0050.00013.29
8.0.120.0060.00316.80
8.0.110.0040.00416.85
8.0.100.0030.00316.88
8.0.90.0040.00416.72
8.0.80.0080.00616.78
8.0.70.0040.00416.91
8.0.60.0040.00416.77
8.0.50.0000.00816.81
8.0.30.0090.01316.81
8.0.20.0100.00917.40
8.0.10.0070.00016.90
8.0.00.0070.01216.58
7.4.330.0050.00015.00
7.4.320.0060.00016.41
7.4.300.0060.00016.35
7.4.290.0080.00016.50
7.4.280.0030.00316.44
7.4.270.0030.00316.49
7.4.260.0110.00016.43
7.4.250.0040.00416.48
7.4.240.0020.00516.50
7.4.230.0070.00016.27
7.4.220.0160.01016.47
7.4.210.0060.00916.44
7.4.200.0040.00416.55
7.4.190.0030.00316.61
7.4.160.0140.00716.57
7.4.150.0040.01417.40
7.4.140.0060.01117.86
7.4.130.0120.00716.45
7.4.120.0040.01416.31
7.4.110.0100.00616.36
7.4.100.0070.01016.34
7.4.90.0110.00716.57
7.4.80.0070.01019.39
7.4.70.0070.01116.43
7.4.60.0030.01316.52
7.4.50.0030.00616.59
7.4.40.0150.00022.77
7.4.30.0050.01116.34
7.4.00.0030.00714.94
7.3.330.0000.00513.04
7.3.320.0050.00013.04
7.3.310.0030.00316.22
7.3.300.0000.00716.13
7.3.290.0080.00816.15
7.3.280.0100.00716.10
7.3.270.0100.00717.40
7.3.260.0060.01216.08
7.3.250.0090.01116.26
7.3.240.0140.01016.54
7.3.230.0120.00616.39
7.3.210.0100.00616.25
7.3.200.0130.00319.39
7.3.190.0140.00316.13
7.3.180.0060.01216.10
7.3.170.0090.00916.27
7.3.160.0120.00616.47
7.3.120.0030.01014.59
7.2.330.0090.00916.22
7.2.320.0140.00416.41
7.2.310.0130.00916.26
7.2.300.0060.01616.26
7.2.290.0080.00816.46
7.2.60.0090.00316.75
7.1.200.0080.00815.53
7.1.70.0040.00417.06
7.1.60.0120.00919.50
7.1.50.0070.01016.85
7.1.00.0000.06022.32
7.0.200.0060.00316.70
7.0.140.0000.07722.00
7.0.60.0130.06719.91
7.0.50.0100.07317.80
7.0.40.0000.05020.22
7.0.30.0130.08719.97
7.0.20.0200.05020.09
7.0.10.0170.04720.13
7.0.00.0030.09020.16
5.6.280.0030.07321.09
5.6.210.0000.09020.71
5.6.200.0030.08018.16
5.6.190.0070.05020.41
5.6.180.4230.03720.49
5.6.170.0270.07020.42
5.6.160.0170.06720.49
5.6.150.0070.07318.08
5.6.140.0070.03718.21
5.6.130.0070.04718.15
5.6.120.0130.06320.98
5.6.110.0070.05720.99
5.6.100.0000.05021.04
5.6.90.0070.08720.97
5.6.80.0100.05720.38
5.6.70.0300.04720.36
5.5.350.0370.06720.42
5.5.340.0000.08018.02
5.5.330.0070.04020.21
5.5.320.0270.07320.17
5.5.310.0230.04020.16
5.5.300.0130.07717.88
5.5.290.0130.07718.02
5.5.280.0000.04320.86
5.5.270.0100.05320.64
5.5.260.0130.08020.96
5.5.250.0270.07020.61
5.5.240.0130.07320.15
5.4.450.0800.06019.41
5.4.440.0730.06019.56
5.4.430.0800.06719.62
5.4.420.0930.05719.10
5.4.410.0830.05719.13
5.4.400.1270.04718.74
5.4.390.1130.07318.57
5.4.380.0200.07018.58
5.4.370.0130.05318.49
5.4.360.0170.05018.76
5.4.350.0110.04911.97
5.4.340.0050.04911.97
5.4.320.0070.03612.46
5.4.310.0080.04712.45
5.4.300.0090.04012.46
5.4.290.0090.04412.45
5.4.280.0050.03812.35
5.4.270.0090.05812.35
5.4.260.0050.04012.35
5.4.250.0070.05018.89
5.4.240.0100.05018.82
5.4.230.0100.04718.83
5.4.220.0030.05718.77
5.4.210.0070.05018.89
5.4.200.0100.04718.99
5.4.190.0000.05718.76
5.4.180.0130.05018.73
5.4.170.0200.05718.86
5.4.160.0070.05018.87
5.4.150.0130.05718.86
5.4.140.0070.05316.27
5.4.130.0130.04016.29
5.4.120.0070.05016.21
5.4.110.0100.05016.26
5.4.100.0030.05716.48
5.4.90.0100.04716.21
5.4.80.0000.06016.34
5.4.70.0130.04016.41
5.4.60.0070.04716.33
5.4.50.0170.04316.39
5.4.40.0070.05716.38
5.4.30.0070.05016.39
5.4.20.0170.04016.26
5.4.10.0030.06016.19
5.4.00.0070.05015.73
5.3.290.0030.04212.80
5.3.280.0170.04014.61
5.3.270.0000.05714.46
5.3.260.0030.05714.38
5.3.250.0070.05014.52
5.3.240.0100.05314.45
5.3.230.0100.04714.45
5.3.220.0070.06014.58
5.3.210.0170.06014.57
5.3.200.0030.06014.45
5.3.190.0070.06014.57
5.3.180.0070.05014.57
5.3.170.0130.05014.33
5.3.160.0070.05314.40
5.3.150.0030.06714.33
5.3.140.0030.05014.57
5.3.130.0070.05714.24
5.3.120.0070.06014.46
5.3.110.0100.05314.55
5.3.100.0070.05314.05
5.3.90.0100.06713.79
5.3.80.0130.04714.17
5.3.70.0000.07714.06
5.3.60.0070.05313.88
5.3.50.0100.05014.04
5.3.40.0100.04713.96
5.3.30.0100.04713.92
5.3.20.0000.05713.68
5.3.10.0100.05313.65
5.3.00.0000.05713.79
5.2.170.0030.04711.16
5.2.160.0000.04311.05
5.2.150.0070.05711.25
5.2.140.0070.04011.14
5.2.130.0070.05711.03
5.2.120.0130.04311.25
5.2.110.0100.03310.98
5.2.100.0030.05010.93
5.2.90.0130.03310.86
5.2.80.0000.05010.92
5.2.70.0070.04311.01
5.2.60.0100.04010.98
5.2.50.0030.04311.17
5.2.40.0170.04310.93
5.2.30.0000.06710.86
5.2.20.0130.04710.71
5.2.10.0030.04011.03
5.2.00.0070.04010.79
5.1.60.0100.0309.90
5.1.50.0170.0279.95
5.1.40.0070.0379.96
5.1.30.0070.03710.40
5.1.20.0000.04310.52
5.1.10.0030.03710.15
5.1.00.0070.03310.02
5.0.50.0000.0438.37
5.0.40.0100.0238.32
5.0.30.0030.0608.28
5.0.20.0000.0408.23
5.0.10.0100.0278.32
5.0.00.0100.0378.07
4.4.90.0030.0276.45
4.4.80.0100.0176.45
4.4.70.0030.0276.45
4.4.60.0030.0236.45
4.4.50.0000.0276.45
4.4.40.0000.0436.45
4.4.30.0100.0236.45
4.4.20.0070.0276.45
4.4.10.0030.0206.45
4.4.00.0100.0276.45
4.3.110.0070.0276.45
4.3.100.0000.0236.45
4.3.90.0000.0236.45
4.3.80.0100.0306.45
4.3.70.0030.0206.45
4.3.60.0030.0206.45
4.3.50.0100.0136.45
4.3.40.0000.0476.45
4.3.30.0000.0236.45
4.3.20.0000.0236.45
4.3.10.0070.0176.45
4.3.00.0370.0276.91

preferences:
47.05 ms | 401 KiB | 5 Q