3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(); $b = array('stupid' => array('franz', 'de leon')); $c = array_merge($a, $b); var_dump($c); abstract class Utility { public static function merge(array $a, array $b) { foreach ($b as $key => $value) { if (isset($key, $a)) { if (is_int($key)) { $a[] = $value; } elseif (is_array($value) && is_array($a[$key])) { $a[$key] = static::merge($a[$key], $value); } else { $a[$key] = $value; } } else { $a[$key] = $value; } } return $a; } } $d = Utility::merge($a, $b); var_dump($d);

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)
8.3.60.0040.01116.88
8.3.50.0120.00322.88
8.3.40.0120.00418.79
8.3.30.0000.01419.22
8.3.20.0040.00420.22
8.3.10.0100.00018.63
8.3.00.0080.00019.38
8.2.180.0110.00416.88
8.2.170.0140.00722.96
8.2.160.0150.00020.35
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0050.00326.16
8.2.120.0000.00821.03
8.2.110.0000.01020.27
8.2.100.0000.01117.84
8.2.90.0000.00818.16
8.2.80.0050.00319.13
8.2.70.0030.00617.93
8.2.60.0040.00417.91
8.2.50.0090.00018.10
8.2.40.0000.00820.60
8.2.30.0050.00219.33
8.2.20.0030.00517.73
8.2.10.0040.00418.14
8.2.00.0000.00817.64
8.1.280.0180.00025.92
8.1.270.0090.00023.79
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0030.00720.82
8.1.230.0070.00622.66
8.1.220.0060.00317.78
8.1.210.0080.00020.45
8.1.200.0030.00517.47
8.1.190.0000.00817.35
8.1.180.0000.00818.10
8.1.170.0040.00418.54
8.1.160.0000.00722.06
8.1.150.0030.00518.95
8.1.140.0050.00317.46
8.1.130.0080.00017.74
8.1.120.0040.00417.44
8.1.110.0000.00717.43
8.1.100.0000.00717.54
8.1.90.0040.00317.44
8.1.80.0000.00817.45
8.1.70.0040.00417.46
8.1.60.0080.00017.66
8.1.50.0050.00317.58
8.1.40.0000.01017.45
8.1.30.0000.00817.61
8.1.20.0000.00817.67
8.1.10.0040.00417.55
8.1.00.0020.00517.44
8.0.300.0040.00421.96
8.0.290.0000.00716.88
8.0.280.0030.00318.54
8.0.270.0030.00317.24
8.0.260.0060.00017.32
8.0.250.0000.00816.98
8.0.240.0040.00417.02
8.0.230.0030.00316.95
8.0.220.0020.00516.93
8.0.210.0040.00416.88
8.0.200.0000.00717.02
8.0.190.0030.00516.97
8.0.180.0040.00417.02
8.0.170.0030.00616.97
8.0.160.0040.00416.95
8.0.150.0050.00316.90
8.0.140.0060.00316.91
8.0.130.0030.00313.44
8.0.120.0050.00316.84
8.0.110.0000.00716.86
8.0.100.0000.00716.86
8.0.90.0040.00417.04
8.0.80.0000.01516.95
8.0.70.0080.00016.93
8.0.60.0040.00416.85
8.0.50.0050.00316.82
8.0.30.0080.01117.18
8.0.20.0100.00917.40
8.0.10.0070.00017.15
8.0.00.0130.00716.98
7.4.330.0000.00615.03
7.4.320.0030.00316.45
7.4.300.0060.00016.61
7.4.290.0000.00716.62
7.4.280.0040.00416.43
7.4.270.0000.00816.61
7.4.260.0000.00716.41
7.4.250.0040.00416.49
7.4.240.0020.00516.62
7.4.230.0000.00716.52
7.4.220.0100.01416.63
7.4.210.0090.00516.66
7.4.200.0030.00316.50
7.4.160.0130.00916.59
7.4.150.0080.01117.40
7.4.140.0080.01017.86
7.4.130.0110.00716.56
7.4.120.0080.01116.55
7.4.110.0150.00316.51
7.4.100.0090.00916.67
7.4.90.0100.00716.65
7.4.80.0080.01119.39
7.4.70.0040.01416.42
7.4.60.0090.01216.49
7.4.50.0030.00516.16
7.4.40.0100.00616.54
7.4.30.0080.00816.40
7.4.00.0000.01215.23
7.3.330.0020.00213.51
7.3.320.0030.00313.31
7.3.310.0070.00016.47
7.3.300.0000.00616.48
7.3.290.0090.00916.44
7.3.280.0080.01016.43
7.3.270.0120.00617.40
7.3.260.0100.00716.46
7.3.250.0080.01016.56
7.3.240.0100.00716.45
7.3.230.0100.00716.39
7.3.210.0180.00316.68
7.3.200.0130.01019.39
7.3.190.0130.00316.55
7.3.180.0090.00616.67
7.3.170.0120.01216.52
7.3.160.0030.01716.37
7.2.330.0130.00616.55
7.2.320.0070.01016.55
7.2.310.0070.01716.67
7.2.300.0090.00916.86
7.2.290.0120.01016.70
7.2.00.0070.00719.30
7.1.100.0040.00717.87
7.1.70.0000.00817.16
7.1.60.0000.01419.61
7.1.50.0130.00317.06
7.1.00.0030.07722.43
7.0.200.0270.00814.89
7.0.140.0030.07322.07
7.0.60.0030.06719.99
7.0.50.0030.05017.88
7.0.40.0170.08020.02
7.0.30.0270.08320.06
7.0.20.0330.07320.05
7.0.10.0030.07020.12
7.0.00.0070.06020.25
5.6.280.0070.07020.82
5.6.210.0000.07720.67
5.6.200.0100.07718.16
5.6.190.0100.08020.33
5.6.180.0330.07020.61
5.6.170.0270.08320.58
5.6.160.0200.06720.50
5.6.150.0130.07318.27
5.6.140.0100.04718.15
5.6.130.0130.07718.12
5.6.120.0130.08021.14
5.6.110.0170.08321.01
5.6.100.0030.07020.89
5.6.90.0070.04320.88
5.6.80.0100.07320.41
5.5.350.0200.08720.31
5.5.340.0030.04017.98
5.5.330.0070.08720.25
5.5.320.0070.04020.27
5.5.310.0230.04320.28
5.5.300.0070.08017.97
5.5.290.0070.08017.98
5.5.280.0030.04020.80
5.5.270.0070.06320.84
5.5.260.0100.08020.73
5.5.250.0100.06720.64
5.5.240.0070.07720.26
5.4.450.0100.06019.58
5.4.440.0770.05319.61
5.4.430.0600.06019.19
5.4.420.0370.05019.29
5.4.410.0930.04719.42
5.4.400.0630.06719.25
5.4.390.0830.05319.29
5.4.380.0500.05018.69
5.4.370.0300.05318.80
5.4.360.0300.06018.51
5.4.350.0270.06018.58
5.4.340.0370.05018.57
5.4.320.0080.03512.50
5.4.310.0060.04512.50
5.4.300.0050.03812.50
5.4.290.0080.04412.49
5.4.280.0060.03612.39
5.4.270.0150.04212.39
5.4.260.0050.03712.39
5.4.250.0080.04512.39
5.4.240.0090.05012.39
5.4.230.0080.04912.38
5.4.220.0070.04612.39
5.4.210.0080.03412.39
5.4.200.0060.03712.39
5.4.190.0090.03312.39
5.4.180.0030.03812.38
5.4.170.0050.03712.39
5.4.160.0070.03412.39
5.4.150.0050.03912.39
5.4.140.0080.03512.07
5.4.130.0080.04912.06
5.4.120.0060.04712.01
5.4.110.0040.03712.01
5.4.100.0100.04512.01
5.4.90.0090.04412.01
5.4.80.0100.04312.01
5.4.70.0040.03612.01
5.4.60.0040.03612.01
5.4.50.0060.03612.01
5.4.40.0080.03411.99
5.4.30.0130.03511.99
5.4.20.0040.03611.99
5.4.10.0060.03412.00
5.4.00.0040.04311.48
5.3.290.0080.05412.80
5.3.280.0080.03912.71
5.3.270.0070.03912.72
5.3.260.0060.03912.72
5.3.250.0070.03712.72
5.3.240.0110.03312.72
5.3.230.0070.03712.71
5.3.220.0070.03612.68
5.3.210.0070.04612.68
5.3.200.0090.05012.68
5.3.190.0110.04012.68
5.3.180.0090.04012.68
5.3.170.0060.03812.67
5.3.160.0070.04912.68
5.3.150.0050.03912.67
5.3.140.0090.03412.66
5.3.130.0060.04112.66
5.3.120.0040.04312.65
5.3.110.0050.04312.66
5.3.100.0050.03912.12
5.3.90.0060.04312.10
5.3.80.0040.03912.09
5.3.70.0090.04012.09
5.3.60.0050.04212.07
5.3.50.0100.04112.03
5.3.40.0090.03412.03
5.3.30.0080.03311.98
5.3.20.0050.04511.76
5.3.10.0110.04111.73
5.3.00.0050.04511.71
5.2.170.0070.0289.23
5.2.160.0070.0289.23
5.2.150.0040.0379.23
5.2.140.0060.0489.23
5.2.130.0050.0309.18
5.2.120.0030.0319.19
5.2.110.0050.0299.19
5.2.100.0080.0259.18
5.2.90.0080.0259.19
5.2.80.0060.0289.19
5.2.70.0080.0339.18
5.2.60.0050.0299.13
5.2.50.0060.0479.10
5.2.40.0070.0269.08
5.2.30.0070.0329.05
5.2.20.0060.0279.04
5.2.10.0060.0368.95
5.2.00.0040.0468.82
5.1.60.0080.0418.09
5.1.50.0060.0278.09
5.1.40.0060.0288.08
5.1.30.0090.0318.43
5.1.20.0030.0288.45
5.1.10.0040.0258.17
5.1.00.0030.0268.17
5.0.50.0050.0196.64
5.0.40.0040.0196.51
5.0.30.0040.0416.32
5.0.20.0050.0246.28
5.0.10.0070.0256.27
5.0.00.0050.0386.25
4.4.90.0030.0164.78
4.4.80.0010.0204.76
4.4.70.0040.0144.75
4.4.60.0030.0154.75
4.4.50.0020.0174.77
4.4.40.0050.0234.71
4.4.30.0030.0154.76
4.4.20.0020.0164.85
4.4.10.0020.0164.85
4.4.00.0040.0244.76
4.3.110.0020.0164.67
4.3.100.0030.0154.66
4.3.90.0030.0144.64
4.3.80.0020.0254.58
4.3.70.0040.0134.63
4.3.60.0030.0144.62
4.3.50.0040.0154.62
4.3.40.0030.0274.54
4.3.30.0030.0163.28
4.3.20.0020.0163.27
4.3.10.0020.0203.22
4.3.00.0200.0177.91

preferences:
44.57 ms | 401 KiB | 5 Q