3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['a'=>1,'b'=>2,'c'=>3]; $b = ['a'=>'aa','b'=>'bb']; var_dump(array_combine( array_map( function($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)
8.3.40.0150.00618.99
8.3.30.0070.00719.02
8.3.20.0070.00020.29
8.3.10.0040.00423.83
8.3.00.0050.00319.25
8.2.170.0090.00622.96
8.2.160.0120.00320.38
8.2.150.0080.00024.18
8.2.140.0070.00324.66
8.2.130.0080.00026.16
8.2.120.0080.00022.34
8.2.110.0070.00322.24
8.2.100.0070.00417.78
8.2.90.0080.00019.34
8.2.80.0000.00817.97
8.2.70.0000.00917.50
8.2.60.0070.00018.05
8.2.50.0030.00818.07
8.2.40.0040.00420.03
8.2.30.0060.00319.79
8.2.20.0030.00517.63
8.2.10.0000.00818.04
8.2.00.0110.00017.73
8.1.270.0060.00323.91
8.1.260.0000.00726.35
8.1.250.0070.00028.09
8.1.240.0030.00624.00
8.1.230.0070.00419.03
8.1.220.0030.00517.74
8.1.210.0000.00918.77
8.1.200.0000.00917.35
8.1.190.0050.00317.25
8.1.180.0060.00318.10
8.1.170.0030.00518.52
8.1.160.0040.00422.07
8.1.150.0000.00718.65
8.1.140.0030.00517.46
8.1.130.0080.00017.85
8.1.120.0020.00517.43
8.1.110.0030.00517.46
8.1.100.0000.00717.42
8.1.90.0040.00417.50
8.1.80.0000.00717.47
8.1.70.0030.00317.47
8.1.60.0000.00817.56
8.1.50.0050.00317.55
8.1.40.0040.00417.54
8.1.30.0040.00417.46
8.1.20.0060.00317.49
8.1.10.0000.00817.49
8.1.00.0040.00417.48
8.0.300.0000.00820.73
8.0.290.0040.00417.18
8.0.280.0030.00318.41
8.0.270.0000.00817.27
8.0.260.0030.00317.21
8.0.250.0030.00316.95
8.0.240.0000.00716.80
8.0.230.0000.00816.95
8.0.220.0000.00716.90
8.0.210.0030.00316.93
8.0.200.0040.00416.95
8.0.190.0070.00016.96
8.0.180.0040.00416.91
8.0.170.0050.00216.91
8.0.160.0000.00816.95
8.0.150.0070.00016.88
8.0.140.0030.00616.79
8.0.130.0030.00313.32
8.0.120.0040.00416.81
8.0.110.0080.00016.88
8.0.100.0030.00316.70
8.0.90.0040.00416.71
8.0.80.0030.01916.89
8.0.70.0000.00716.89
8.0.60.0000.00816.84
8.0.50.0040.00416.75
8.0.30.0060.01317.02
8.0.20.0090.01117.40
8.0.10.0030.00516.98
8.0.00.0170.00416.78
7.4.330.0000.00515.00
7.4.320.0060.00016.50
7.4.300.0030.00316.52
7.4.290.0030.00316.61
7.4.280.0040.00416.42
7.4.270.0000.00716.37
7.4.260.0000.00716.39
7.4.250.0050.00316.50
7.4.240.0020.00516.55
7.4.230.0070.00016.54
7.4.220.0060.01216.63
7.4.210.0070.00716.63
7.4.200.0000.00716.54
7.4.190.0000.00716.48
7.4.160.0100.00716.51
7.4.150.0210.00017.40
7.4.140.0110.01117.86
7.4.130.0060.01116.63
7.4.120.0100.01016.54
7.4.110.0030.01316.56
7.4.100.0070.01116.52
7.4.90.0120.00616.39
7.4.80.0000.01719.39
7.4.70.0130.00316.60
7.4.60.0040.01216.48
7.4.50.0000.00816.36
7.4.40.0110.00616.52
7.4.30.0070.01016.71
7.4.00.0020.01514.72
7.3.330.0000.00613.27
7.3.320.0020.00213.25
7.3.310.0000.00716.27
7.3.300.0040.00416.14
7.3.290.0100.01016.32
7.3.280.0140.00516.29
7.3.270.0120.00617.40
7.3.260.0170.00016.47
7.3.250.0100.01116.57
7.3.240.0030.01416.34
7.3.230.0100.00716.56
7.3.210.0140.00416.61
7.3.200.0070.01419.39
7.3.190.0090.00916.56
7.3.180.0030.01316.33
7.3.170.0130.00616.36
7.3.160.0040.01116.52
7.3.120.0060.00914.77
7.3.110.0070.01114.63
7.3.100.0030.00914.70
7.3.90.0050.00514.92
7.3.80.0030.01214.93
7.3.70.0100.00314.72
7.3.60.0060.01114.80
7.3.50.0070.00714.71
7.3.40.0000.01314.81
7.3.30.0000.01314.66
7.3.20.0070.01016.67
7.3.10.0110.00016.59
7.3.00.0030.01216.79
7.2.330.0310.01816.55
7.2.320.0110.00716.74
7.2.310.0120.00916.73
7.2.300.0080.00916.52
7.2.290.0060.01616.53
7.2.250.0070.01115.22
7.2.240.0120.00615.23
7.2.230.0100.00614.77
7.2.220.0090.00614.96
7.2.210.0100.00314.80
7.2.200.0030.01014.89
7.2.190.0140.00014.99
7.2.180.0080.00314.93
7.2.170.0100.00315.17
7.2.60.0060.01117.01
7.2.00.0090.00319.45
7.1.330.0070.00715.66
7.1.320.0100.00315.75
7.1.310.0150.00015.97
7.1.300.0140.00415.66
7.1.290.0090.00315.76
7.1.280.0030.01315.64
7.1.270.0060.00616.00
7.1.260.0070.00716.00
7.1.200.0110.00515.74
7.1.100.0030.00917.95
7.1.70.0000.00917.26
7.1.60.0090.01619.46
7.1.50.0090.01517.02
7.1.00.0030.07322.40
7.0.200.0220.00614.82
7.0.140.0070.07022.09
7.0.100.0070.06019.91
7.0.90.0100.08020.02
7.0.80.0070.07019.95
7.0.70.0200.06720.14
7.0.60.0070.05019.94
7.0.50.0070.04720.15
7.0.40.0100.08020.19
7.0.30.0100.06020.05
7.0.20.0130.06720.13
7.0.10.0070.07020.02
7.0.00.0030.05320.08
5.6.280.0000.07720.93
5.6.250.0070.05020.78
5.6.240.0100.07720.67
5.6.230.0170.07020.50
5.6.220.0070.09020.59
5.6.210.0030.06320.48
5.6.200.0100.07321.14
5.6.190.0000.07321.04
5.6.180.0130.08021.00
5.6.170.0070.08321.04
5.6.160.0030.05021.00
5.6.150.0130.07321.01
5.6.140.0070.08020.98
5.6.130.0100.07320.95
5.6.120.0070.08321.17
5.6.110.0170.07721.07
5.6.100.0100.07321.07
5.6.90.0100.03720.94
5.6.80.0170.05020.45
5.6.70.0000.04320.32
5.6.60.0070.08020.42
5.6.50.0030.04020.49
5.6.40.0070.05720.30
5.6.30.0070.07720.31
5.6.20.0000.05720.36
5.6.10.0030.04720.31
5.6.00.0070.07320.36
5.5.380.0070.08320.40
5.5.370.0100.07020.39
5.5.360.0070.08020.49
5.5.350.0070.08020.34
5.5.340.0070.07720.86
5.5.330.0170.07320.65
5.5.320.0000.09020.85
5.5.310.0000.08020.87
5.5.300.0030.05320.92
5.5.290.0070.05720.84
5.5.280.0070.07720.80
5.5.270.0100.09320.79
5.5.260.0100.09320.79
5.5.250.0030.05020.73
5.5.240.0070.06320.22
5.5.230.0070.07320.21
5.5.220.0100.06020.29
5.5.210.0130.06320.27
5.5.200.0100.07320.23
5.5.190.0070.05020.16
5.5.180.0130.07720.28
5.5.160.0030.04719.96
5.5.150.0070.06320.11
5.5.140.0100.04020.14
5.5.130.0030.05020.08
5.5.120.0030.07720.10
5.5.110.0070.06320.13
5.5.100.0030.07320.13
5.5.90.0000.04319.95
5.5.80.0130.03720.01
5.5.70.0070.08019.94
5.5.60.0000.06319.94
5.5.50.0130.03719.96
5.5.40.0100.06720.15
5.5.30.0170.04020.05
5.5.20.0100.06020.00
5.5.10.0030.07019.95
5.5.00.0030.04319.93
5.4.450.0070.08319.46
5.4.440.0000.08719.54
5.4.430.0070.06719.53
5.4.420.0100.09719.41
5.4.410.0170.07319.38
5.4.400.0030.04718.86
5.4.390.0070.08019.18
5.4.380.0070.05018.85
5.4.370.0070.06319.22
5.4.360.0100.05719.13
5.4.350.0100.07019.12
5.4.340.0030.05018.88
5.4.320.0130.06719.18
5.4.310.0100.08018.91
5.4.300.0000.05319.09
5.4.290.0100.07719.25
5.4.280.0130.06319.09
5.4.270.0200.06319.20
5.4.260.0070.04319.04
5.4.250.0030.06319.16
5.4.240.0100.07319.04
5.4.230.0130.06719.04
5.4.220.0070.04018.87
5.4.210.0030.06718.90
5.4.200.0100.06319.17
5.4.190.0070.04018.89
5.4.180.0030.05018.86
5.4.170.0030.06319.16
5.4.160.0030.05318.93
5.4.150.0070.08319.21
5.4.140.0030.05716.51
5.4.130.0030.04716.32
5.4.120.0030.05316.33
5.4.110.0030.08016.39
5.4.100.0000.07016.43
5.4.90.0070.05016.43
5.4.80.0170.05316.47
5.4.70.0070.04316.48
5.4.60.0100.06016.45
5.4.50.0100.03316.45
5.4.40.0070.07016.54
5.4.30.0070.06716.36
5.4.20.0000.04716.48
5.4.10.0130.06016.24
5.4.00.0130.06715.85
5.3.290.0130.07014.65
5.3.280.0070.07014.50
5.3.270.0030.08314.60
5.3.260.0100.03314.46
5.3.250.0070.04714.42
5.3.240.0170.07014.61
5.3.230.0030.05314.46
5.3.220.0070.07714.56
5.3.210.0030.04714.43
5.3.200.0100.03714.55
5.3.190.0030.04714.42
5.3.180.0100.07714.57
5.3.170.0070.07014.53
5.3.160.0070.04314.55
5.3.150.0100.07014.47
5.3.140.0100.03714.46
5.3.130.0000.08014.49
5.3.120.0170.06314.54
5.3.110.0070.06314.55
5.3.100.0100.06713.99
5.3.90.0100.05014.03
5.3.80.0030.03714.00
5.3.70.0100.06313.95
5.3.60.0070.07713.99
5.3.50.0100.05713.85
5.3.40.0100.05013.89
5.3.30.0070.07313.87
5.3.20.0070.06013.46
5.3.10.0030.05313.52
5.3.00.0000.04313.62
5.2.170.0100.04012.15
5.2.160.0030.04712.15
5.2.150.0070.05312.15
5.2.140.0070.03312.15
5.2.130.0100.05012.15
5.2.120.0070.06012.15
5.2.110.0030.02712.15
5.2.100.0000.03712.15
5.2.90.0070.05312.15
5.2.80.0130.06312.15
5.2.70.0000.03312.15
5.2.60.0000.03312.15
5.2.50.0070.02712.15
5.2.40.0070.04712.15
5.2.30.0030.05712.15
5.2.20.0030.05012.15
5.2.10.0130.04712.15
5.2.00.0030.05712.15
5.1.60.0030.04312.15
5.1.50.0030.03012.15
5.1.40.0000.03712.15
5.1.30.0030.04312.15
5.1.20.0000.03012.15
5.1.10.0070.04712.15
5.1.00.0070.04712.15
5.0.50.0000.02712.15
5.0.40.0000.02012.15
5.0.30.0030.04312.15
5.0.20.0000.02312.15
5.0.10.0000.04712.15
5.0.00.0070.03012.15
4.4.90.0000.01712.15
4.4.80.0000.02012.15
4.4.70.0000.01712.15
4.4.60.0000.02312.15
4.4.50.0000.05012.15
4.4.40.0070.04312.15
4.4.30.0000.01712.15
4.4.20.0000.02312.15
4.4.10.0030.02312.15
4.4.00.0030.04312.15
4.3.110.0030.03012.15
4.3.100.0070.02012.15
4.3.90.0000.02012.15
4.3.80.0000.04712.15
4.3.70.0000.03712.15
4.3.60.0030.02312.15
4.3.50.0000.02012.15
4.3.40.0000.04012.15
4.3.30.0030.01712.15
4.3.20.0030.03012.15
4.3.10.0030.03312.15
4.3.00.0000.02712.15

preferences:
42.6 ms | 400 KiB | 5 Q