3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => 'a', 'b' => 'b', 'z' => array('c' => 'c', 'd' => 'd')); $b = array('a' => 'c', 'z' => array('c' => 'e')); $merge = function($a, $b) use (&$merge){ if (is_array($a) && is_array($b)){ $return = array(); foreach ($b as $key => $value){ if (is_array($value) && isset($a[$key]) && is_array($a[$key])){ $return[] = $merge($a[$key], $value); } else { $return[] = $value; } } return $return; } else { return $b; } }; var_dump($merge($a, $b));

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)
8.3.70.0100.00718.68
8.3.60.0110.01118.43
8.3.50.0080.01221.33
8.3.40.0110.00718.92
8.3.30.0030.01020.34
8.3.20.0040.00420.55
8.3.10.0040.00420.98
8.3.00.0040.00423.59
8.2.190.0090.00616.58
8.2.180.0100.01016.75
8.2.170.0120.00622.96
8.2.160.0070.00720.47
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0040.00421.19
8.2.110.0060.00321.00
8.2.100.0090.00317.78
8.2.90.0050.00319.11
8.2.80.0030.00618.04
8.2.70.0030.00517.63
8.2.60.0060.00317.93
8.2.50.0060.00318.07
8.2.40.0040.00418.34
8.2.30.0040.00719.48
8.2.20.0020.00517.63
8.2.10.0040.00417.68
8.2.00.0000.00817.74
8.1.280.0060.00925.92
8.1.270.0000.00823.99
8.1.260.0000.00726.35
8.1.250.0070.00028.09
8.1.240.0080.00022.14
8.1.230.0100.00317.42
8.1.220.0040.00418.77
8.1.210.0050.00320.78
8.1.200.0090.00017.25
8.1.190.0000.00717.41
8.1.180.0080.00018.10
8.1.170.0080.00018.41
8.1.160.0040.00418.85
8.1.150.0040.00418.73
8.1.140.0050.00317.49
8.1.130.0000.00717.83
8.1.120.0000.00817.50
8.1.110.0000.00717.36
8.1.100.0070.00017.50
8.1.90.0050.00317.33
8.1.80.0000.00717.34
8.1.70.0040.00417.38
8.1.60.0030.00717.63
8.1.50.0000.00817.38
8.1.40.0000.00817.54
8.1.30.0000.00817.65
8.1.20.0000.00817.62
8.1.10.0000.00817.55
8.1.00.0030.00617.52
8.0.300.0070.00019.94
8.0.290.0040.00417.05
8.0.280.0030.00318.30
8.0.270.0040.00417.25
8.0.260.0000.00716.71
8.0.250.0040.00416.85
8.0.240.0070.00017.04
8.0.230.0000.00716.89
8.0.220.0040.00416.84
8.0.210.0030.00316.77
8.0.200.0000.00616.91
8.0.190.0030.00316.98
8.0.180.0030.00316.88
8.0.170.0050.00316.84
8.0.160.0050.00316.79
8.0.150.0030.00316.82
8.0.140.0030.00316.79
8.0.130.0060.00013.36
8.0.120.0000.00716.83
8.0.110.0040.00416.70
8.0.100.0030.00316.90
8.0.90.0040.00416.77
8.0.80.0060.00916.93
8.0.70.0040.00416.87
8.0.60.0000.00816.75
8.0.50.0000.00816.75
8.0.30.0080.01217.01
8.0.20.0120.00917.40
8.0.10.0000.00817.06
8.0.00.0060.01216.55
7.4.330.0000.00514.86
7.4.320.0030.00616.50
7.4.300.0030.00316.59
7.4.290.0070.00016.40
7.4.280.0000.00716.60
7.4.270.0000.00616.64
7.4.260.0060.00013.28
7.4.250.0000.00716.45
7.4.240.0000.00816.60
7.4.230.0040.00416.59
7.4.220.0180.00616.53
7.4.210.0100.00516.51
7.4.200.0040.00416.56
7.4.190.0000.00716.66
7.4.160.0100.00616.59
7.4.150.0150.00317.40
7.4.140.0130.00817.86
7.4.130.0080.01116.43
7.4.120.0100.00716.57
7.4.110.0090.00916.41
7.4.100.0140.00316.41
7.4.90.0070.01116.50
7.4.80.0060.01219.39
7.4.70.0100.00716.73
7.4.60.0090.00916.36
7.4.50.0030.00616.34
7.4.40.0040.01222.77
7.4.30.0100.00716.45
7.4.00.0060.00614.81
7.3.330.0050.00013.13
7.3.320.0070.00013.30
7.3.310.0030.00316.20
7.3.300.0030.00316.32
7.3.290.0090.00516.35
7.3.280.0020.01416.30
7.3.270.0140.00317.40
7.3.260.0100.01418.24
7.3.250.0140.00616.49
7.3.240.0130.01216.52
7.3.230.0090.00916.44
7.3.210.0090.00916.58
7.3.200.0110.00919.39
7.3.190.0120.00816.34
7.3.180.0090.00916.35
7.3.170.0140.00316.53
7.3.160.0100.01316.61
7.3.120.0060.00914.50
7.2.330.0000.01816.65
7.2.320.0120.00916.81
7.2.310.0100.00716.77
7.2.300.0060.01416.86
7.2.290.0080.00816.59
7.2.00.0100.00319.63
7.1.100.0040.00418.19
7.1.70.0000.01117.22
7.1.60.0040.00819.17
7.1.50.0100.01017.14
7.1.00.0000.03722.54
7.0.200.0030.00316.83
7.0.140.0070.07022.07
7.0.100.0330.07720.05
7.0.90.0430.05719.98
7.0.80.0000.05319.97
7.0.70.0130.07719.90
7.0.60.0070.07719.89
7.0.50.0070.08720.23
7.0.40.0030.07720.08
7.0.30.0030.07719.98
7.0.20.0030.09020.04
7.0.10.0030.08720.05
7.0.00.0030.08020.12
5.6.280.0070.07020.89
5.6.250.0100.04320.52
5.6.240.0130.06720.70
5.6.230.0030.08320.59
5.6.220.0100.05320.68
5.6.210.0170.07020.46
5.6.200.0200.08021.14
5.6.190.0070.09021.14
5.6.180.0130.07721.06
5.6.170.0070.08321.02
5.6.160.0030.04321.01
5.6.150.0030.06321.07
5.6.140.0130.02721.17
5.6.130.0100.07720.95
5.6.120.0000.09021.13
5.6.110.0100.04321.03
5.6.100.0100.04321.00
5.6.90.0300.01721.00
5.6.80.0000.06320.48
5.6.70.0070.05720.32
5.6.60.0100.03320.39
5.6.50.0030.07720.43
5.6.40.0100.07720.46
5.6.30.0200.06320.46
5.6.20.0300.03020.29
5.6.10.0170.07020.41
5.6.00.0000.08320.36
5.5.380.0130.07720.36
5.5.370.0200.06020.42
5.5.360.0130.07320.49
5.5.350.0130.04320.43
5.5.340.0030.07320.80
5.5.330.0070.09020.91
5.5.320.0000.07720.88
5.5.310.0100.04320.82
5.5.300.0070.06320.93
5.5.290.0030.05720.76
5.5.280.0070.07020.93
5.5.270.0100.07320.90
5.5.260.0070.05720.63
5.5.250.0030.04020.63
5.5.240.0070.04720.03
5.5.230.0030.04020.11
5.5.220.0030.08720.18
5.5.210.0030.04720.28
5.5.200.0170.06020.21
5.5.190.0100.07720.11
5.5.180.0270.05720.11
5.5.160.0070.07320.07
5.5.150.0100.07720.12
5.5.140.0070.07720.14
5.5.130.0100.04320.08
5.5.120.0130.03320.21
5.5.110.0200.06320.14
5.5.100.0030.03720.05
5.5.90.0100.03720.08
5.5.80.0130.07320.07
5.5.70.0130.07020.15
5.5.60.0030.08320.04
5.5.50.0000.08720.09
5.5.40.0170.07020.06
5.5.30.0030.04720.10
5.5.20.0030.05020.11
5.5.10.0100.03319.96
5.5.00.0030.04020.13
5.4.450.0070.07019.49
5.4.440.0030.07319.46
5.4.430.0030.07319.36
5.4.420.0070.07019.46
5.4.410.0070.07019.06
5.4.400.0170.06318.85
5.4.390.0100.06719.22
5.4.380.0000.07319.03
5.4.370.0070.07719.05
5.4.360.0000.05019.02
5.4.350.0100.03719.03
5.4.340.0100.07319.20
5.4.320.0030.07319.23
5.4.310.0000.08718.90
5.4.300.0070.06719.04
5.4.290.0130.05018.91
5.4.280.0070.04019.20
5.4.270.0100.07019.16
5.4.260.0030.07318.89
5.4.250.0100.07019.17
5.4.240.0070.07319.02
5.4.230.0100.06718.84
5.4.220.0130.04019.17
5.4.210.0130.07319.09
5.4.200.0070.08719.18
5.4.190.0070.07718.95
5.4.180.0130.03319.20
5.4.170.0000.04718.89
5.4.160.0030.03718.93
5.4.150.0030.04018.93
5.4.140.0070.03316.25
5.4.130.0000.04316.45
5.4.120.0100.03016.41
5.4.110.0100.02716.39
5.4.100.0030.03316.43
5.4.90.0030.03716.43
5.4.80.0030.03316.46
5.4.70.0100.02716.41
5.4.60.0030.03316.37
5.4.50.0030.04716.49
5.4.40.0100.04716.45
5.4.30.0030.05016.46
5.4.20.0100.06016.29
5.4.10.0100.03316.40
5.4.00.0000.04015.85
5.3.290.0030.07714.66
5.3.280.0070.04314.73
5.3.270.0070.03714.61
5.3.260.0100.03314.56
5.3.250.0070.03314.60
5.3.240.0000.04014.66
5.3.230.0070.03714.65
5.3.220.0130.02314.69
5.3.210.0070.03314.45
5.3.200.0070.03314.63
5.3.190.0030.03714.55
5.3.180.0100.02714.57
5.3.170.0070.02714.53
5.3.160.0030.06014.67
5.3.150.0130.06014.61
5.3.140.0070.03014.55
5.3.130.0030.03314.48
5.3.120.0130.07714.61
5.3.110.0000.03714.53
5.3.100.0000.04314.09
5.3.90.0100.03714.08
5.3.80.0070.03714.08
5.3.70.0130.02714.09
5.3.60.0030.03013.93
5.3.50.0070.03313.94
5.3.40.0030.04713.86
5.3.30.0070.04013.88
5.3.20.0030.03713.60
5.3.10.0000.03713.57
5.3.00.0030.03713.76
5.2.170.0030.04311.13
5.2.160.0000.03311.00
5.2.150.0170.04710.97
5.2.140.0070.02311.12
5.2.130.0030.02711.10
5.2.120.0000.03011.09
5.2.110.0000.02711.09
5.2.100.0070.02311.08
5.2.90.0070.02311.09
5.2.80.0070.02311.09
5.2.70.0070.02311.16
5.2.60.0000.03011.09
5.2.50.0070.02710.85
5.2.40.0000.03010.84
5.2.30.0000.03010.96
5.2.20.0000.03010.77
5.2.10.0030.02710.91
5.2.00.0070.02710.79
5.1.60.0000.02710.06
5.1.50.0030.02310.07
5.1.40.0000.0279.98
5.1.30.0070.02010.38
5.1.20.0000.02710.26
5.1.10.0000.02710.14
5.1.00.0030.02310.06
5.0.50.0030.0209.51
5.0.40.0000.0209.51
5.0.30.0000.0309.51
5.0.20.0000.0209.51
5.0.10.0000.0239.51
5.0.00.0000.0339.51
4.4.90.0030.0109.51
4.4.80.0000.0179.51
4.4.70.0070.0109.51
4.4.60.0030.0139.51
4.4.50.0000.0179.51
4.4.40.0000.0239.51
4.4.30.0000.0179.51
4.4.20.0000.0179.51
4.4.10.0000.0179.51
4.4.00.0000.0279.51
4.3.110.0030.0139.51
4.3.100.0030.0139.51
4.3.90.0000.0179.51
4.3.80.0000.0239.51
4.3.70.0030.0139.51
4.3.60.0030.0209.51
4.3.50.0000.0139.51
4.3.40.0000.0239.51
4.3.30.0000.0139.51
4.3.20.0030.0139.51
4.3.10.0000.0179.51
4.3.00.0000.0179.51

preferences:
49.39 ms | 401 KiB | 5 Q