3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ["username"=> 'asdfasf', 'avatar' => 'test']; $b = ['username' => 'test']; $c = array_merge($a, b); var_dump($c);

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)
8.3.60.0150.00816.63
8.3.50.0130.00521.13
8.3.40.0170.00018.71
8.3.30.0100.00718.57
8.3.20.0050.00220.21
8.3.10.0040.00423.43
8.3.00.0080.00021.71
8.2.180.0040.01125.92
8.2.170.0140.00719.13
8.2.160.0120.00622.96
8.2.150.0110.00425.66
8.2.140.0050.00324.66
8.2.130.0050.00320.75
8.2.120.0070.00026.35
8.2.110.0040.00419.24
8.2.100.0070.00417.93
8.2.90.0030.00519.18
8.2.80.0040.00417.97
8.2.70.0000.00917.63
8.2.60.0040.00417.93
8.2.50.0030.00818.09
8.2.40.0040.00420.77
8.2.30.0000.00819.49
8.2.20.0040.00417.65
8.2.10.0040.00418.09
8.2.00.0000.00818.09
8.1.280.0070.01025.92
8.1.270.0040.00424.66
8.1.260.0070.00028.09
8.1.250.0000.00728.09
8.1.240.0060.00322.54
8.1.230.0110.00017.77
8.1.220.0060.00317.75
8.1.210.0040.00418.77
8.1.200.0050.00517.35
8.1.190.0040.00417.34
8.1.180.0000.00818.10
8.1.170.0000.00818.37
8.1.160.0070.00020.66
8.1.150.0030.00318.94
8.1.140.0080.00019.61
8.1.130.0030.00317.59
8.1.120.0030.00317.36
8.1.110.0050.00317.44
8.1.100.0000.00817.42
8.1.90.0040.00417.46
8.1.80.0050.00317.35
8.1.70.0040.00417.36
8.1.60.0050.00217.54
8.1.50.0000.00817.54
8.1.40.0050.00517.39
8.1.30.0030.00517.67
8.1.20.0000.00817.57
8.1.10.0000.00717.58
8.1.00.0000.00917.47
8.0.300.0040.00418.77
8.0.290.0040.00416.88
8.0.280.0000.00718.36
8.0.270.0070.00017.19
8.0.260.0000.00617.23
8.0.250.0030.00317.00
8.0.240.0030.00317.03
8.0.230.0000.00716.89
8.0.220.0020.00516.84
8.0.210.0000.00716.95
8.0.200.0000.00616.90
8.0.190.0050.00316.97
8.0.180.0070.00016.88
8.0.170.0000.00716.90
8.0.160.0000.00716.91
8.0.150.0030.00616.95
8.0.140.0000.00816.89
8.0.130.0060.00013.35
8.0.120.0030.00516.94
8.0.110.0040.00416.95
8.0.100.0000.00716.89
8.0.90.0040.00416.94
8.0.80.0100.01016.82
8.0.70.0040.00417.00
8.0.60.0040.00416.81
8.0.50.0040.00416.77
8.0.30.0120.00617.04
8.0.20.0070.01217.40
8.0.10.0000.00717.02
8.0.00.0090.00816.81
7.4.330.0050.00016.71
7.4.320.0030.00316.41
7.4.300.0000.00616.54
7.4.290.0000.00716.39
7.4.280.0050.00316.40
7.4.270.0000.00716.60
7.4.260.0030.00316.47
7.4.250.0000.00916.47
7.4.240.0030.00516.48
7.4.230.0070.00016.49
7.4.220.0120.01316.62
7.4.210.0090.00816.55
7.4.200.0030.00316.32
7.4.160.0130.01016.35
7.4.150.0090.00917.40
7.4.140.0130.00717.86
7.4.130.0120.00816.45
7.4.120.0100.00716.45
7.4.110.0070.01016.69
7.4.100.0090.00916.50
7.4.90.0080.00816.52
7.4.80.0090.01319.39
7.4.70.0120.00316.34
7.4.60.0100.01316.32
7.4.50.0030.01016.37
7.4.40.0120.00916.56
7.4.30.0090.01416.72
7.4.00.0090.00814.84
7.3.330.0030.00312.88
7.3.320.0000.00613.08
7.3.310.0070.00016.18
7.3.300.0030.00316.13
7.3.290.0040.00416.23
7.3.280.0120.00616.22
7.3.270.0060.01217.40
7.3.260.0090.00916.27
7.3.250.0080.01116.33
7.3.240.0100.01016.32
7.3.230.0090.00916.39
7.3.210.0070.01016.40
7.3.200.0160.00319.39
7.3.190.0090.00916.23
7.3.180.0070.01016.38
7.3.170.0060.01116.30
7.3.160.0150.00416.44
7.3.120.0050.00714.72
7.3.110.0090.00514.70
7.3.100.0110.00214.54
7.3.90.0030.01314.73
7.3.80.0100.00514.64
7.3.70.0050.00914.67
7.3.60.0060.00814.71
7.3.50.0050.00914.69
7.3.40.0020.01214.79
7.3.30.0050.00914.76
7.3.20.0050.00816.52
7.3.10.0020.01316.50
7.3.00.0040.00916.52
7.2.330.0070.01016.46
7.2.320.0070.01016.63
7.2.310.0120.00616.48
7.2.300.0030.01316.53
7.2.290.0120.00616.64
7.2.250.0140.00314.89
7.2.240.0070.00914.72
7.2.230.0050.00915.08
7.2.220.0040.00914.90
7.2.210.0050.00914.64
7.2.200.0070.00514.73
7.2.190.0050.00914.98
7.2.180.0050.01014.77
7.2.170.0060.00814.80
7.2.160.0040.00814.71
7.2.150.0000.01316.79
7.2.140.0030.01216.52
7.2.130.0000.01116.90
7.2.120.0040.01116.88
7.2.110.0070.00916.77
7.2.100.0120.00316.84
7.2.90.0030.00616.81
7.2.80.0050.00716.79
7.2.70.0080.00816.86
7.2.60.0080.00616.90
7.2.50.0090.00616.87
7.2.40.0050.00516.57
7.2.30.0070.00716.87
7.2.20.0000.01016.78
7.2.10.0100.00316.81
7.2.00.0020.01318.00
7.1.330.0030.01215.69
7.1.320.0030.00715.83
7.1.310.0050.01015.74
7.1.300.0090.00615.49
7.1.290.0030.00915.54
7.1.280.0070.00715.56
7.1.270.0050.00615.71
7.1.260.0030.00915.56
7.1.250.0030.00915.65
7.1.200.0060.00315.78
7.1.100.0080.00418.11
7.1.70.0040.00417.05
7.1.60.0070.01719.40
7.1.50.0080.01116.80
7.1.00.0170.06022.41
7.0.200.0140.00914.98
7.0.60.0300.08020.00
7.0.50.0070.07717.91
7.0.40.0170.07019.98
7.0.30.0130.04320.09
7.0.20.0400.07320.12
7.0.10.0070.07720.17
7.0.00.0070.08720.08
5.6.280.0070.06321.04
5.6.210.0000.08720.70
5.6.200.0070.06718.22
5.6.190.0100.08320.41
5.6.180.0300.04720.41
5.6.170.0230.04320.37
5.6.160.0070.05320.33
5.6.150.0070.08018.16
5.6.140.0130.07318.18
5.6.130.0100.07318.17
5.6.120.0000.04320.89
5.6.110.0030.04720.99
5.6.100.0070.05720.95
5.6.90.0100.08720.97
5.6.80.0030.03720.36
5.5.350.0230.05020.41
5.5.340.0070.08017.97
5.5.330.0030.04320.25
5.5.320.0530.08020.27
5.5.310.0300.03720.28
5.5.300.0070.07717.91
5.5.290.0030.04017.92
5.5.280.0070.05720.95
5.5.270.0070.08320.83
5.5.260.0030.08720.78
5.5.250.0100.08020.68
5.5.240.0130.04020.15

preferences:
70.53 ms | 401 KiB | 5 Q