3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a'=>1,'b'=>2,'c'=>3); $b = array('a'=>'aa','b'=>'bb'); var_dump(array_combine( array_map( function($key) use ($b) { return isset($b[$key]) ? $b[$key] : $key; }, array_keys($a) ), array_values($a) ));

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)
8.3.70.0110.01116.50
8.3.60.0070.00716.50
8.3.50.0080.01121.94
8.3.40.0100.01018.80
8.3.30.0100.00719.22
8.3.20.0050.00320.16
8.3.10.0040.00423.53
8.3.00.0000.00819.38
8.2.180.0070.00718.31
8.2.170.0070.00722.96
8.2.160.0100.00320.41
8.2.150.0000.00824.18
8.2.140.0110.00024.66
8.2.130.0070.00026.16
8.2.120.0070.00022.25
8.2.110.0030.00619.45
8.2.100.0080.00317.91
8.2.90.0040.00418.34
8.2.80.0040.00417.97
8.2.70.0000.00818.03
8.2.60.0080.00018.16
8.2.50.0090.00018.10
8.2.40.0040.00420.23
8.2.30.0080.00019.97
8.2.20.0000.00817.74
8.2.10.0040.00418.00
8.2.00.0060.00617.70
8.1.280.0140.00425.92
8.1.270.0040.00423.97
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0060.00620.81
8.1.230.0040.00820.95
8.1.220.0040.00417.74
8.1.210.0080.00018.88
8.1.200.0030.00517.50
8.1.190.0170.00016.88
8.1.180.0080.00018.10
8.1.170.0000.00818.78
8.1.160.0000.00821.97
8.1.150.0000.00818.61
8.1.140.0000.00717.46
8.1.130.0030.00317.80
8.1.120.0040.00417.36
8.1.110.0030.00717.46
8.1.100.0030.00417.41
8.1.90.0000.00717.38
8.1.80.0040.00417.39
8.1.70.0070.00017.43
8.1.60.0060.00317.48
8.1.50.0000.00817.55
8.1.40.0040.00417.53
8.1.30.0040.00417.52
8.1.20.0040.00417.70
8.1.10.0030.00717.48
8.1.00.0040.00417.48
8.0.300.0040.00419.82
8.0.290.0050.00316.75
8.0.280.0000.00718.50
8.0.270.0030.00317.25
8.0.260.0030.00317.21
8.0.250.0000.00716.86
8.0.240.0000.00616.96
8.0.230.0030.00516.95
8.0.220.0000.00716.93
8.0.210.0060.00316.87
8.0.200.0060.00016.83
8.0.190.0060.00316.95
8.0.180.0040.00416.90
8.0.170.0050.00316.99
8.0.160.0040.00416.89
8.0.150.0040.00416.85
8.0.140.0000.00816.79
8.0.130.0000.00513.30
8.0.120.0030.00616.92
8.0.110.0040.00416.83
8.0.100.0030.00516.84
8.0.90.0040.00416.84
8.0.80.0050.01016.96
8.0.70.0000.00716.89
8.0.60.0050.00216.82
8.0.50.0040.00416.91
8.0.30.0060.01217.22
8.0.20.0070.01217.40
8.0.10.0050.00216.88
8.0.00.0080.01216.70
7.4.330.0050.00015.00
7.4.320.0030.00316.53
7.4.300.0000.00716.51
7.4.290.0040.00416.50
7.4.280.0000.00816.51
7.4.270.0000.00716.38
7.4.260.0030.00316.48
7.4.250.0040.00416.38
7.4.240.0020.00616.53
7.4.230.0040.00416.37
7.4.220.0070.01116.47
7.4.210.0030.01216.47
7.4.200.0040.00416.45
7.4.190.0030.00316.47
7.4.160.0100.01016.40
7.4.150.0140.00317.40
7.4.140.0080.01317.86
7.4.130.0090.00816.47
7.4.120.0110.00716.71
7.4.110.0100.00716.57
7.4.100.0070.01116.59
7.4.90.0100.00716.58
7.4.80.0090.00919.39
7.4.70.0030.01216.49
7.4.60.0060.01116.40
7.4.50.0000.00916.49
7.4.40.0130.00416.46
7.4.30.0080.00816.55
7.4.00.0100.00715.09
7.3.330.0050.00213.27
7.3.320.0050.00013.24
7.3.310.0040.00416.35
7.3.300.0040.00416.27
7.3.290.0060.01016.28
7.3.280.0070.01216.30
7.3.270.0090.00917.40
7.3.260.0220.02816.42
7.3.250.0100.01216.56
7.3.240.0080.01216.39
7.3.230.0170.00016.39
7.3.210.0090.00916.34
7.3.200.0210.00419.39
7.3.190.0090.01016.36
7.3.180.0000.01516.27
7.3.170.0130.00316.51
7.3.160.0170.00016.40
7.3.120.0040.00815.02
7.3.10.0100.00416.63
7.3.00.0140.00616.22
7.2.330.0040.01316.37
7.2.320.0030.01816.76
7.2.310.0130.00616.54
7.2.300.0110.00616.41
7.2.290.0230.00016.43
7.2.130.0080.00816.78
7.2.120.0080.00816.71
7.2.110.0110.00416.68
7.2.100.0100.00516.56
7.2.90.0120.00516.73
7.2.80.0110.00616.70
7.2.70.0070.00816.43
7.2.60.0050.00716.62
7.2.50.0080.00716.55
7.2.40.0050.01116.96
7.2.30.0100.01016.74
7.2.20.0110.00516.70
7.2.10.0110.01016.64
7.2.00.0120.01116.78
7.1.250.0070.00415.40
7.1.70.0080.00817.24
7.1.60.0090.01619.46
7.1.50.0030.01316.96
7.1.00.0030.07322.31
7.0.200.0160.00314.81
7.0.140.0000.07322.15
7.0.100.0030.05019.94
7.0.90.0200.05319.88
7.0.80.0200.05019.93
7.0.70.0030.04019.89
7.0.60.0030.04020.00
7.0.50.0070.04320.29
7.0.40.0030.04320.05
7.0.30.0100.03720.13
7.0.20.0100.03720.15
7.0.10.0130.03320.04
7.0.00.0130.03320.11
5.6.280.0070.07021.03
5.6.250.0070.04020.63
5.6.240.0030.09020.64
5.6.230.0070.08020.51
5.6.220.0070.03720.71
5.6.210.0030.04020.56
5.6.200.0070.04021.04
5.6.190.0070.04321.11
5.6.180.0100.03721.11
5.6.170.0100.03021.02
5.6.160.0000.04321.11
5.6.150.0130.03321.04
5.6.140.0230.02321.11
5.6.130.0070.03321.04
5.6.120.0030.03720.97
5.6.110.0070.03321.00
5.6.100.0000.04721.07
5.6.90.0070.05321.02
5.6.80.0100.06320.41
5.6.70.0100.07720.30
5.6.60.0070.08020.51
5.6.50.0100.05720.55
5.6.40.0030.05720.38
5.6.30.0070.07320.31
5.6.20.0130.07320.41
5.6.10.0000.08720.40
5.6.00.0000.08320.42
5.5.380.0170.05720.42
5.5.370.0100.04320.42
5.5.360.0000.04720.50
5.5.350.0100.03720.39
5.5.340.0030.04320.93
5.5.330.0000.04320.81
5.5.320.0070.04020.93
5.5.310.0000.05020.73
5.5.300.0000.04720.78
5.5.290.0030.03320.89
5.5.280.0070.04020.88
5.5.270.0070.03020.79
5.5.260.0100.02720.81
5.5.250.0000.03720.70
5.5.240.0100.07320.30
5.5.230.0130.07320.25
5.5.220.0130.07720.15
5.5.210.0130.03720.21
5.5.200.0170.07320.00
5.5.190.0170.06320.11
5.5.180.0070.07720.27
5.5.160.0100.07320.15
5.5.150.0070.07320.21
5.5.140.0070.06720.23
5.5.130.0070.08020.17
5.5.120.0130.06720.08
5.5.110.0030.07320.12
5.5.100.0070.08320.12
5.5.90.0130.07720.01
5.5.80.0130.07320.13
5.5.70.0030.07720.05
5.5.60.0070.04320.03
5.5.50.0170.06720.09
5.5.40.0100.07320.03
5.5.30.0070.06320.03
5.5.20.0130.07020.07
5.5.10.0070.08020.04
5.5.00.0030.07019.97
5.4.450.0030.03319.56
5.4.440.0000.04319.42
5.4.430.0070.03019.35
5.4.420.0030.03319.41
5.4.410.0070.03719.05
5.4.400.0100.06019.21
5.4.390.0030.05719.23
5.4.380.0100.07719.05
5.4.370.0030.08719.04
5.4.360.0130.04319.21
5.4.350.0000.05018.88
5.4.340.0030.06719.04
5.4.320.0030.08018.90
5.4.310.0100.07319.21
5.4.300.0070.07719.09
5.4.290.0000.04719.12
5.4.280.0070.08019.12
5.4.270.0070.07019.03
5.4.260.0100.07718.88
5.4.250.0100.07019.11
5.4.240.0070.06719.15
5.4.230.0130.03318.87
5.4.220.0070.07018.87
5.4.210.0100.04019.04
5.4.200.0070.07019.17
5.4.190.0100.06719.22
5.4.180.0030.07018.86
5.4.170.0070.05719.02
5.4.160.0070.04718.93
5.4.150.0100.07318.82
5.4.140.0130.04016.45
5.4.130.0100.06716.36
5.4.120.0030.06316.36
5.4.110.0070.06316.34
5.4.100.0030.07016.34
5.4.90.0070.07716.46
5.4.80.0100.07316.45
5.4.70.0070.06016.38
5.4.60.0100.06016.24
5.4.50.0030.07016.48
5.4.40.0000.07716.53
5.4.30.0070.07716.44
5.4.20.0070.07716.44
5.4.10.0130.06016.45
5.4.00.0000.07715.84
5.3.290.0200.05714.68
5.3.280.0100.06714.66
5.3.270.0100.07714.73
5.3.260.0100.04314.66
5.3.250.0030.04714.58
5.3.240.0030.04714.67
5.3.230.0070.07314.56
5.3.220.0100.06714.61
5.3.210.0030.07014.70
5.3.200.0130.04014.48
5.3.190.0170.06714.63
5.3.180.0070.07314.63
5.3.170.0070.06014.61
5.3.160.0100.05714.49
5.3.150.0000.04314.49
5.3.140.0100.07314.63
5.3.130.0070.06714.65
5.3.120.0030.07014.49
5.3.110.0070.07314.53
5.3.100.0070.07313.96
5.3.90.0070.04014.12
5.3.80.0030.07714.01
5.3.70.0030.04014.01
5.3.60.0000.06313.89
5.3.50.0000.08013.94
5.3.40.0030.07013.98
5.3.30.0070.07313.92
5.3.20.0130.03313.78
5.3.10.0130.04713.68
5.3.00.0100.06713.57
5.2.170.0000.05311.09
5.2.160.0030.06311.18
5.2.150.0030.06311.18
5.2.140.0030.06010.97
5.2.130.0030.07011.09
5.2.120.0030.03710.89
5.2.110.0000.03711.13
5.2.100.0100.05711.16
5.2.90.0030.05311.09
5.2.80.0070.06011.14
5.2.70.0030.06010.91
5.2.60.0070.06310.93
5.2.50.0030.04310.83
5.2.40.0000.05011.04
5.2.30.0100.06010.95
5.2.20.0070.02710.96
5.2.10.0070.05010.71
5.2.00.0070.06010.72
5.1.60.0070.02310.02
5.1.50.0030.03710.01
5.1.40.0100.02310.03
5.1.30.0030.04310.41
5.1.20.0030.04710.35
5.1.10.0070.03710.05
5.1.00.0000.0339.90
5.0.50.0000.0308.58
5.0.40.0030.0438.47
5.0.30.0000.0338.15
5.0.20.0130.0308.26
5.0.10.0000.0408.20
5.0.00.0030.0678.15
4.4.90.0030.0378.15
4.4.80.0000.0338.15
4.4.70.0000.0238.15
4.4.60.0000.0338.15
4.4.50.0000.0278.15
4.4.40.0030.0538.15
4.4.30.0030.0338.15
4.4.20.0000.0308.15
4.4.10.0030.0178.15
4.4.00.0030.0278.15
4.3.110.0030.0238.15
4.3.100.0000.0378.15
4.3.90.0000.0238.15
4.3.80.0000.0338.15
4.3.70.0030.0238.15
4.3.60.0030.0338.15
4.3.50.0000.0308.15
4.3.40.0000.0278.15
4.3.30.0030.0278.15
4.3.20.0000.0378.15
4.3.10.0000.0178.15
4.3.00.0000.0208.15

preferences:
48.87 ms | 401 KiB | 5 Q