3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = array( 'a' => 1, 'b' => '1', 'c' => 1, 1 => 2, '1' => '2', ); function change_keys($array, $callback) { return array_combine(array_map($callback, array_combine(array_keys($array), array_keys($array))), $array); } var_dump(change_keys($foo, function($v) { return '#' . $v; }));

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)
8.3.60.0100.00716.75
8.3.50.0110.00722.82
8.3.40.0070.00718.71
8.3.30.0130.00319.01
8.3.20.0050.00220.20
8.3.10.0040.00423.61
8.3.00.0060.00319.13
8.2.180.0150.00416.75
8.2.170.0090.00618.79
8.2.160.0140.00022.96
8.2.150.0040.00424.18
8.2.140.0040.01124.66
8.2.130.0070.00026.16
8.2.120.0040.00419.76
8.2.110.0090.00020.54
8.2.100.0070.00417.91
8.2.90.0030.00519.22
8.2.80.0000.00817.97
8.2.70.0060.00317.62
8.2.60.0060.00317.68
8.2.50.0070.00318.07
8.2.40.0070.00018.22
8.2.30.0040.00418.11
8.2.20.0040.00417.67
8.2.10.0000.00718.13
8.2.00.0000.00717.81
8.1.280.0120.00925.92
8.1.270.0100.00622.01
8.1.260.0000.00726.35
8.1.250.0000.00728.09
8.1.240.0040.00822.53
8.1.230.0000.01021.04
8.1.220.0030.00618.77
8.1.210.0040.00418.89
8.1.200.0000.00817.35
8.1.190.0080.00017.36
8.1.180.0030.00618.10
8.1.170.0040.00418.50
8.1.160.0000.00821.93
8.1.150.0000.00818.96
8.1.140.0070.00017.46
8.1.130.0070.00017.90
8.1.120.0000.00817.37
8.1.110.0000.00917.33
8.1.100.0040.00417.50
8.1.90.0030.00417.37
8.1.80.0000.00717.37
8.1.70.0030.00317.48
8.1.60.0000.00817.59
8.1.50.0030.00517.43
8.1.40.0040.00417.45
8.1.30.0040.00417.62
8.1.20.0040.00417.62
8.1.10.0030.00617.54
8.1.00.0040.00417.37
8.0.300.0040.00420.04
8.0.290.0040.00416.63
8.0.280.0040.00418.33
8.0.270.0000.00717.28
8.0.260.0060.00017.22
8.0.250.0000.00716.87
8.0.240.0040.00416.98
8.0.230.0030.00316.82
8.0.220.0030.00316.91
8.0.210.0000.00816.91
8.0.200.0040.00416.86
8.0.190.0070.00016.81
8.0.180.0040.00716.93
8.0.170.0030.00616.92
8.0.160.0030.00316.79
8.0.150.0030.00316.83
8.0.140.0000.00716.88
8.0.130.0000.00813.30
8.0.120.0040.00416.84
8.0.110.0000.00816.74
8.0.100.0030.00516.88
8.0.90.0020.00516.88
8.0.80.0120.00316.85
8.0.70.0000.00816.85
8.0.60.0030.00516.80
8.0.50.0080.00017.02
8.0.30.0150.00717.35
8.0.20.0010.01717.40
8.0.10.0000.00816.98
8.0.00.0070.01116.71
7.4.330.0030.00315.01
7.4.320.0060.00016.51
7.4.300.0030.00316.43
7.4.290.0070.00016.60
7.4.280.0000.00716.36
7.4.270.0000.00716.60
7.4.260.0000.00716.48
7.4.250.0070.00016.57
7.4.240.0040.00416.49
7.4.230.0040.00316.51
7.4.220.0090.00916.64
7.4.210.0090.00616.56
7.4.200.0070.00016.37
7.4.160.0150.00016.45
7.4.150.0060.01217.40
7.4.140.0150.00817.86
7.4.130.0080.01016.59
7.4.120.0090.00816.54
7.4.110.0070.01016.55
7.4.100.0100.00716.43
7.4.90.0090.00816.54
7.4.80.0090.01319.39
7.4.70.0070.01116.46
7.4.60.0130.01016.47
7.4.50.0030.00616.66
7.4.40.0130.00316.62
7.4.30.0090.00916.54
7.4.00.0090.00314.83
7.3.330.0000.00613.17
7.3.320.0050.00013.28
7.3.310.0000.00816.36
7.3.300.0040.00416.17
7.3.290.0040.01116.20
7.3.280.0080.00716.28
7.3.270.0100.01317.40
7.3.260.0100.00616.43
7.3.240.0040.01216.29
7.3.230.0070.01016.63
7.3.210.0070.01016.46
7.3.200.0030.01419.39
7.3.190.0120.01216.48
7.3.180.0040.01516.58
7.3.170.0120.00616.52
7.3.160.0120.00616.45
7.3.10.0040.01116.44
7.3.00.0040.00416.31
7.2.330.0180.00516.34
7.2.320.0080.01216.68
7.2.310.0130.01016.32
7.2.300.0170.00616.68
7.2.290.0100.00416.47
7.2.130.0070.00316.35
7.2.120.0070.00716.83
7.2.110.0060.00616.92
7.2.100.0060.00616.70
7.2.90.0060.00616.90
7.2.80.0030.00916.48
7.2.70.0100.00316.67
7.2.60.0050.00716.76
7.2.50.0030.00916.55
7.2.40.0070.00716.43
7.2.30.0030.01016.86
7.2.20.0000.01616.70
7.2.10.0030.01016.48
7.2.00.0120.00016.57
7.1.250.0030.00715.40
7.1.200.0080.00415.92
7.1.70.0030.00617.16
7.1.60.0040.01119.40
7.1.50.0040.01816.89
7.1.00.0030.07722.31
7.0.200.0040.00416.57
7.0.140.0000.07722.04
7.0.60.0030.07720.00
7.0.50.0070.08017.97
7.0.40.0170.06319.96
7.0.30.0230.04020.24
7.0.20.0230.08320.23
7.0.10.0130.07720.24
7.0.00.0170.04720.09
5.6.280.0000.07720.91
5.6.210.0070.08320.55
5.6.200.0100.07718.18
5.6.190.0130.08020.48
5.6.180.0270.05720.57
5.6.170.0270.07720.73
5.6.160.0030.06020.50
5.6.150.0030.05318.15
5.6.140.0000.07718.19
5.6.130.0100.08018.29
5.6.120.0070.04021.04
5.6.110.0170.07320.89
5.6.100.0000.08321.03
5.6.90.0070.05020.89
5.6.80.0100.05720.43
5.5.350.0230.07720.30
5.5.340.0070.05718.05
5.5.330.0030.04720.30
5.5.320.0200.04320.51
5.5.310.0370.07320.38
5.5.300.0070.05317.92
5.5.290.0070.08017.95
5.5.280.0070.08020.88
5.5.270.0300.05320.96
5.5.260.0200.07020.96
5.5.250.0000.09020.71
5.5.240.0070.03020.16
5.4.450.0830.06719.43
5.4.440.0570.06319.64
5.4.430.0830.04319.39
5.4.420.0530.07319.28
5.4.410.0070.05318.69
5.4.400.0270.05718.73
5.4.390.0830.04718.73
5.4.380.0100.05318.59
5.4.370.0070.05018.73
5.4.360.0130.04718.67
5.4.350.0080.08712.02
5.4.340.0050.04512.02
5.4.320.0070.03412.51
5.4.310.0080.03512.51
5.4.300.0060.03412.50
5.4.290.0060.04512.51
5.4.280.0070.03312.40
5.4.270.0070.04112.40
5.4.260.0090.04512.40
5.4.250.0050.03712.40
5.4.240.0070.03412.40
5.4.230.0070.04112.39
5.4.220.0020.04312.40
5.4.210.0060.03512.39
5.4.200.0090.03812.39
5.4.190.0070.03412.39
5.4.180.0050.04412.39
5.4.170.0040.03812.40
5.4.160.0050.03612.39
5.4.150.0060.03612.39
5.4.140.0090.03412.07
5.4.130.0050.03612.06
5.4.120.0060.03412.02
5.4.110.0050.03612.02
5.4.100.0050.03512.02
5.4.90.0090.04012.01
5.4.80.0030.04212.02
5.4.70.0090.03512.01
5.4.60.0060.03812.01
5.4.50.0070.03212.01
5.4.40.0090.03912.00
5.4.30.0050.03612.00
5.4.20.0070.03612.00
5.4.10.0060.03312.00
5.4.00.0030.03911.49
5.3.290.0100.04212.80
5.3.280.0090.03412.71
5.3.270.0060.03812.73
5.3.260.0100.04112.72
5.3.250.0050.03912.72
5.3.240.0050.04712.72
5.3.230.0100.03812.70
5.3.220.0090.03512.68
5.3.210.0080.03712.68
5.3.200.0050.03712.68
5.3.190.0070.04212.68
5.3.180.0080.03812.68
5.3.170.0090.03612.66
5.3.160.0070.03812.67
5.3.150.0090.04212.67
5.3.140.0110.03712.66
5.3.130.0110.03412.66
5.3.120.0130.04012.66
5.3.110.0060.03812.66
5.3.100.0040.03912.12
5.3.90.0050.03712.11
5.3.80.0060.03512.10
5.3.70.0070.03412.09
5.3.60.0050.03612.07
5.3.50.0080.03412.03
5.3.40.0080.03312.03
5.3.30.0030.03711.98
5.3.20.0100.03311.77
5.3.10.0070.03611.73
5.3.00.0040.03911.72
5.2.170.0030.0319.22
5.2.160.0040.0309.23
5.2.150.0100.0299.22
5.2.140.0050.0309.22
5.2.130.0060.0279.18
5.2.120.0050.0319.18
5.2.110.0100.0249.18
5.2.100.0080.0289.18
5.2.90.0040.0329.18
5.2.80.0060.0309.18
5.2.70.0080.0339.18
5.2.60.0050.0319.13
5.2.50.0050.0349.10
5.2.40.0060.0299.07
5.2.30.0050.0389.05
5.2.20.0060.0349.05
5.2.10.0060.0308.95
5.2.00.0030.0308.81
5.1.60.0030.0258.09
5.1.50.0020.0268.09
5.1.40.0060.0268.07
5.1.30.0060.0248.42
5.1.20.0060.0248.44
5.1.10.0040.0268.16
5.1.00.0050.0258.17
5.0.50.0030.0216.64
5.0.40.0030.0206.51
5.0.30.0030.0326.31
5.0.20.0050.0186.28
5.0.10.0030.0206.26
5.0.00.0050.0286.25
4.4.90.0030.0184.78
4.4.80.0030.0204.75
4.4.70.0030.0144.75
4.4.60.0030.0144.75
4.4.50.0030.0204.77
4.4.40.0030.0254.71
4.4.30.0010.0174.76
4.4.20.0010.0174.84
4.4.10.0040.0144.85
4.4.00.0010.0264.76
4.3.110.0040.0144.67
4.3.100.0030.0144.67
4.3.90.0030.0144.64
4.3.80.0060.0214.58
4.3.70.0020.0154.63
4.3.60.0050.0124.63
4.3.50.0020.0164.62
4.3.40.0030.0234.54
4.3.30.0020.0163.30
4.3.20.0020.0163.28
4.3.10.0020.0153.24
4.3.00.0130.0277.21

preferences:
42.34 ms | 401 KiB | 5 Q