3v4l.org

run code in 300+ PHP versions simultaneously
<?php 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] = merge($a[$key], $value); } else { $a[$key] = $value; } } else { $a[$key] = $value; } } return $a; } $a = array('person' => array( 'name' => 'franz', 'last_name' => 'de leon', )); $b = array('person' => array( 'name' => 'cheryl', )); var_dump(merge($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)
8.3.60.0120.00318.55
8.3.50.0150.00319.05
8.3.40.0150.00718.68
8.3.30.0090.00618.84
8.3.20.0080.00018.90
8.3.10.0090.00020.51
8.3.00.0080.00019.51
8.2.180.0110.00716.75
8.2.170.0070.01122.96
8.2.160.0040.01422.00
8.2.150.0030.00524.18
8.2.140.0000.00824.66
8.2.130.0050.00326.16
8.2.120.0080.00019.83
8.2.110.0160.00620.96
8.2.100.0110.00017.84
8.2.90.0080.00019.22
8.2.80.0050.00318.05
8.2.70.0040.00417.63
8.2.60.0050.00317.93
8.2.50.0060.00318.07
8.2.40.0060.00318.32
8.2.30.0000.01218.20
8.2.20.0000.00717.73
8.2.10.0040.00417.64
8.2.00.0040.00417.65
8.1.280.0120.00325.92
8.1.270.0070.00023.99
8.1.260.0070.00026.35
8.1.250.0000.00728.09
8.1.240.0040.00420.93
8.1.230.0070.00420.84
8.1.220.0060.00317.74
8.1.210.0030.00918.97
8.1.200.0060.00317.48
8.1.190.0080.00017.50
8.1.180.0050.00318.10
8.1.170.0030.00618.89
8.1.160.0050.00218.87
8.1.150.0070.00018.66
8.1.140.0070.00017.50
8.1.130.0030.00317.84
8.1.120.0040.00417.50
8.1.110.0050.00317.47
8.1.100.0000.00717.50
8.1.90.0020.00517.51
8.1.80.0040.00317.51
8.1.70.0040.00417.44
8.1.60.0000.00917.49
8.1.50.0100.00017.38
8.1.40.0040.00417.48
8.1.30.0000.00717.58
8.1.20.0040.00417.63
8.1.10.0040.00417.56
8.1.00.0040.00417.48
8.0.300.0000.00719.91
8.0.290.0070.00016.75
8.0.280.0040.00418.47
8.0.270.0040.00417.27
8.0.260.0030.00316.74
8.0.250.0020.00517.00
8.0.240.0060.00316.90
8.0.230.0040.00416.84
8.0.220.0000.00716.89
8.0.210.0050.00316.82
8.0.200.0030.00317.01
8.0.190.0000.00716.96
8.0.180.0050.00316.97
8.0.170.0030.00616.78
8.0.160.0030.00516.82
8.0.150.0000.00816.92
8.0.140.0040.00416.84
8.0.130.0030.00313.30
8.0.120.0040.00416.89
8.0.110.0080.00016.73
8.0.100.0040.00416.91
8.0.90.0040.00416.79
8.0.80.0000.01516.96
8.0.70.0070.00016.97
8.0.60.0080.00016.80
8.0.50.0000.00716.93
8.0.30.0100.01017.11
8.0.20.0080.01017.40
8.0.10.0040.00417.05
8.0.00.0110.01016.82
7.4.330.0000.00513.43
7.4.320.0000.00816.63
7.4.300.0000.00716.62
7.4.290.0030.00316.63
7.4.280.0050.00316.47
7.4.270.0070.00016.64
7.4.260.0000.00513.22
7.4.250.0050.00216.52
7.4.240.0050.00316.63
7.4.230.0040.00416.56
7.4.220.0150.00716.67
7.4.210.0050.01016.54
7.4.200.0070.00016.57
7.4.190.0030.00316.53
7.4.160.0030.01316.52
7.4.150.0080.00817.40
7.4.140.0110.00917.19
7.4.130.0080.01016.63
7.4.120.0090.00716.55
7.4.110.0070.01016.45
7.4.100.0090.00916.49
7.4.90.0030.01516.73
7.4.80.0090.01219.03
7.4.70.0030.01616.53
7.4.60.0040.01216.51
7.4.50.0060.00316.48
7.4.40.0040.01122.27
7.4.30.0080.00816.46
7.4.00.0090.00915.00
7.3.330.0060.00013.20
7.3.320.0030.00313.21
7.3.310.0050.00316.29
7.3.300.0070.00016.36
7.3.290.0100.00716.42
7.3.280.0080.00916.34
7.3.270.0140.00417.40
7.3.260.0110.01018.24
7.3.250.0110.00916.52
7.3.240.0080.00816.38
7.3.230.0100.00716.39
7.3.210.0120.00616.45
7.3.200.0110.01119.39
7.3.190.0040.01416.31
7.3.180.0030.01216.42
7.3.170.0060.01416.40
7.3.160.0030.01316.54
7.3.120.0110.00415.01
7.3.10.0060.00916.64
7.3.00.0040.01216.48
7.2.330.0140.00616.68
7.2.320.0090.01316.62
7.2.310.0170.00716.78
7.2.300.0030.01516.58
7.2.290.0120.00916.53
7.2.130.0070.01116.86
7.2.120.0100.00716.60
7.2.110.0060.00617.15
7.2.100.0000.01117.06
7.2.90.0080.00416.83
7.2.80.0030.00917.14
7.2.70.0060.00316.61
7.2.60.0030.01016.75
7.2.50.0060.00817.21
7.2.40.0090.00316.98
7.2.30.0000.01216.73
7.2.20.0060.00616.95
7.2.10.0060.01016.85
7.2.00.0040.00918.33
7.1.250.0030.00615.80
7.1.100.0060.00618.23
7.1.70.0030.01017.22
7.1.60.0070.01719.40
7.1.50.0100.01316.95
7.1.00.0000.05722.28
7.0.200.0000.00716.88
7.0.140.0100.06722.00
7.0.120.0000.03321.96
7.0.110.0000.04322.11
7.0.100.0030.07322.16
7.0.90.0030.05722.17
7.0.80.0070.06322.09
7.0.70.0000.07322.02
7.0.60.0070.06721.72
7.0.50.0030.04722.18
7.0.40.0000.07021.98
7.0.30.0000.07722.02
7.0.20.0000.05722.07
7.0.10.0070.04722.19
7.0.00.0030.05022.17
5.6.280.0100.06721.00
5.6.260.0000.03320.99
5.6.250.0000.04721.13
5.6.240.0030.05021.06
5.6.230.0030.05321.13
5.6.220.0100.06021.02
5.6.210.0100.05020.95
5.6.200.0170.05321.06
5.6.190.0000.07720.84
5.6.180.0030.07021.09
5.6.170.0070.06320.84
5.6.160.0000.05020.84
5.6.150.0030.05021.06
5.6.140.0000.07720.74
5.6.130.0000.06021.04
5.6.120.0030.05020.83
5.6.110.0030.05021.05
5.6.100.0000.08720.74
5.6.90.0030.07320.84
5.6.80.0000.07020.31
5.6.70.0000.07320.38
5.6.60.0100.06720.38
5.6.50.0030.07020.45
5.6.40.0000.07020.11
5.6.30.0030.06320.34
5.6.20.0070.07020.10
5.6.10.0070.06720.22
5.6.00.0030.07320.14
5.5.380.0030.06717.47
5.5.370.0070.04017.70
5.5.360.0000.05717.71
5.5.350.0000.05017.55
5.5.340.0000.04718.14
5.5.330.0030.05718.25
5.5.320.0030.07318.09
5.5.310.0100.06717.93
5.5.300.0030.07318.09
5.5.290.0000.08017.95
5.5.280.0100.02718.09
5.5.270.0000.03717.82
5.5.260.0030.07718.09
5.5.250.0030.07317.91
5.5.240.0000.06317.30
5.5.230.0030.06017.50
5.5.220.0070.05717.31
5.5.210.0070.06317.48
5.5.200.0030.06717.29
5.5.190.0070.06317.45
5.5.180.0030.08017.27
5.5.160.0070.04317.48
5.5.150.0030.06017.26
5.5.140.0070.06317.42
5.5.130.0030.05717.40
5.5.120.0030.06017.40
5.5.110.0000.07017.42
5.5.100.0070.06717.33
5.5.90.0000.04317.30
5.5.80.0030.04017.08
5.5.70.0070.03017.31
5.5.60.0000.06317.37
5.5.50.0000.06017.34
5.5.40.0070.05717.46
5.5.30.0030.06317.15
5.5.20.0070.04717.34
5.5.10.0030.03717.37
5.5.00.0030.03017.16
5.4.450.0030.06019.48
5.4.440.0030.05319.63
5.4.430.0030.06719.48
5.4.420.0070.06319.28
5.4.410.0100.06019.52
5.4.400.0030.06719.16
5.4.390.0070.06719.31
5.4.380.0070.06319.18
5.4.370.0000.07019.01
5.4.360.0030.07019.24
5.4.350.0030.04319.22
5.4.340.0030.04318.96
5.4.320.0070.06019.03
5.4.310.0030.05319.17
5.4.300.0030.06319.24
5.4.290.0030.06719.30
5.4.280.0070.06019.02
5.4.270.0070.06018.94
5.4.260.0000.07319.21
5.4.250.0030.05719.15
5.4.240.0030.03718.99
5.4.230.0000.04319.25
5.4.220.0030.05719.02
5.4.210.0000.07019.16
5.4.200.0000.04019.16
5.4.190.0030.07018.98
5.4.180.0000.04318.99
5.4.170.0000.03019.16
5.4.160.0000.03019.16
5.4.150.0000.03319.16
5.4.140.0000.03016.38
5.4.130.0000.03016.50
5.4.120.0000.03016.34
5.4.110.0030.02716.41
5.4.100.0000.03016.55
5.4.90.0000.03016.49
5.4.80.0030.02716.34
5.4.70.0030.02716.54
5.4.60.0000.03016.38
5.4.50.0030.03016.39
5.4.40.0000.03316.56
5.4.30.0070.05016.52
5.4.20.0030.05716.43
5.4.10.0000.06716.39
5.4.00.0030.06015.91
5.3.290.0030.04714.52
5.3.280.0000.05314.60
5.3.270.0000.03314.64
5.3.260.0030.03014.68
5.3.250.0000.03014.64
5.3.240.0000.03014.61
5.3.230.0030.02714.61
5.3.220.0000.03014.56
5.3.210.0030.03014.60
5.3.200.0000.03014.57
5.3.190.0000.03014.57
5.3.180.0030.02714.59
5.3.170.0000.03014.54
5.3.160.0030.03014.57
5.3.150.0000.03014.64
5.3.140.0030.02714.56
5.3.130.0000.07014.56
5.3.120.0000.06314.69
5.3.110.0000.05314.67
5.3.100.0030.06714.06
5.3.90.0030.05714.10
5.3.80.0000.04314.00
5.3.70.0000.04013.88
5.3.60.0000.05714.25
5.3.50.0070.06013.94
5.3.40.0070.05713.94
5.3.30.0030.06013.86
5.3.20.0030.03713.71
5.3.10.0070.05713.65
5.3.00.0070.05713.63
5.2.170.0000.03711.21
5.2.160.0000.04011.27
5.2.150.0000.05311.21
5.2.140.0000.04011.10
5.2.130.0000.04711.24
5.2.120.0100.04311.16
5.2.110.0000.05311.07
5.2.100.0070.04711.25
5.2.90.0000.05011.12
5.2.80.0030.05711.07
5.2.70.0030.05711.23
5.2.60.0000.03311.11
5.2.50.0000.03011.02
5.2.40.0000.05310.99
5.2.30.0030.05011.20
5.2.20.0000.04310.96
5.2.10.0000.05010.87
5.2.00.0000.05310.68
5.1.60.0000.0379.96
5.1.50.0000.0479.98
5.1.40.0000.0409.93
5.1.30.0000.03710.36
5.1.20.0030.04710.31
5.1.10.0000.04310.14
5.1.00.0000.05010.07
5.0.50.0000.0309.91
5.0.40.0000.0379.91
5.0.30.0000.0439.91
5.0.20.0000.0379.91
5.0.10.0030.0379.91
5.0.00.0070.0509.91
4.4.90.0030.0179.91
4.4.80.0000.0179.91
4.4.70.0070.0239.91
4.4.60.0000.0239.91
4.4.50.0030.0279.91
4.4.40.0030.0439.91
4.4.30.0000.0239.91
4.4.20.0070.0279.91
4.4.10.0030.0279.91
4.4.00.0000.0439.91
4.3.110.0000.0279.91
4.3.100.0000.0309.91
4.3.90.0030.0279.91
4.3.80.0000.0379.91
4.3.70.0000.0279.91
4.3.60.0030.0239.91
4.3.50.0030.0309.91
4.3.40.0000.0479.91
4.3.30.0030.0309.91
4.3.20.0000.0309.91
4.3.10.0000.0279.91
4.3.00.0000.0279.91

preferences:
40.91 ms | 401 KiB | 5 Q