3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['123' => '123', '456' => '456']; $b = []; $b += $a; var_dump($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)
8.3.60.0120.00616.50
8.3.50.0100.00718.05
8.3.40.0140.00718.77
8.3.30.0170.00318.54
8.3.20.0070.00020.20
8.3.10.0040.00423.48
8.3.00.0050.00320.94
8.2.180.0090.00616.38
8.2.170.0070.01122.96
8.2.160.0040.01118.96
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0080.00022.26
8.2.120.0140.00026.35
8.2.110.0050.00520.84
8.2.100.0040.00817.93
8.2.90.0000.00819.05
8.2.80.0050.00317.97
8.2.70.0000.00817.63
8.2.60.0040.00417.93
8.2.50.0030.00618.10
8.2.40.0000.00720.55
8.2.30.0030.00620.61
8.2.20.0030.00517.72
8.2.10.0040.00418.03
8.2.00.0000.00718.08
8.1.280.0070.01425.92
8.1.270.0040.00423.99
8.1.260.0060.00328.09
8.1.250.0000.00828.09
8.1.240.0060.00324.03
8.1.230.0070.00317.70
8.1.220.0000.00817.74
8.1.210.0030.00518.77
8.1.200.0030.00617.11
8.1.190.0030.00617.23
8.1.180.0020.00518.10
8.1.170.0100.00018.53
8.1.160.0030.00320.96
8.1.150.0040.00418.88
8.1.140.0070.00019.42
8.1.130.0040.00417.54
8.1.120.0000.00717.39
8.1.110.0040.00417.38
8.1.100.0040.00417.38
8.1.90.0070.00017.27
8.1.80.0000.00717.27
8.1.70.0020.00517.32
8.1.60.0020.00517.46
8.1.50.0000.00917.43
8.1.40.0070.00317.41
8.1.30.0080.00017.60
8.1.20.0000.00817.58
8.1.10.0030.00517.32
8.1.00.0000.00817.36
8.0.300.0050.00218.77
8.0.290.0000.00716.75
8.0.280.0030.00318.32
8.0.270.0070.00017.19
8.0.260.0040.00417.11
8.0.250.0000.00716.96
8.0.240.0030.00316.87
8.0.230.0030.00316.83
8.0.220.0000.00716.87
8.0.210.0030.00316.89
8.0.200.0040.00416.84
8.0.190.0030.00516.95
8.0.180.0040.00416.94
8.0.170.0050.00316.90
8.0.160.0030.00516.78
8.0.150.0000.00716.77
8.0.140.0040.00416.73
8.0.130.0000.00513.32
8.0.120.0030.00516.74
8.0.110.0000.00716.70
8.0.100.0040.00416.88
8.0.90.0000.00716.75
8.0.80.0110.00516.82
8.0.70.0040.00416.86
8.0.60.0040.00416.79
8.0.50.0050.00216.77
8.0.30.0120.00917.00
8.0.20.0120.00717.40
8.0.10.0030.00316.96
8.0.00.0080.01016.63
7.4.330.0000.00515.08
7.4.320.0060.00016.53
7.4.300.0000.00716.41
7.4.290.0020.00516.51
7.4.280.0030.00516.43
7.4.270.0000.00716.52
7.4.260.0030.00316.52
7.4.250.0000.00716.53
7.4.240.0070.00016.42
7.4.230.0030.00316.50
7.4.220.0120.00316.45
7.4.210.0070.00716.45
7.4.200.0070.00016.59
7.4.160.0110.00416.20
7.4.150.0090.00917.40
7.4.140.0080.01117.86
7.4.130.0080.01116.42
7.4.120.0140.00716.36
7.4.110.0140.00316.46
7.4.100.0040.01516.38
7.4.90.0030.01916.56
7.4.80.0100.00719.39
7.4.70.0090.00616.38
7.4.60.0100.00616.33
7.4.50.0000.01516.42
7.4.40.0120.00616.43
7.4.30.0130.00316.41
7.4.00.0090.00714.81
7.3.330.0050.00013.09
7.3.320.0050.00013.02
7.3.310.0000.00716.14
7.3.300.0030.00316.27
7.3.290.0000.00716.21
7.3.280.0100.01016.23
7.3.270.0170.00017.40
7.3.260.0070.01016.46
7.3.250.0110.01016.35
7.3.240.0070.00916.31
7.3.230.0120.00616.44
7.3.210.0060.01016.19
7.3.200.0110.00616.47
7.3.190.0100.00716.21
7.3.180.0130.00316.50
7.3.170.0120.00616.16
7.3.160.0060.01016.18
7.3.120.0090.00714.68
7.3.110.0070.00714.85
7.3.100.0050.00914.72
7.3.90.0050.00814.83
7.3.80.0060.00914.78
7.3.70.0070.00314.55
7.3.60.0020.01314.67
7.3.50.0040.01114.70
7.3.40.0070.00714.52
7.3.30.0020.01114.73
7.3.20.0030.00916.55
7.3.10.0070.00616.48
7.3.00.0110.00316.36
7.2.330.0030.01616.40
7.2.320.0110.00816.48
7.2.310.0130.00716.34
7.2.300.0150.00616.27
7.2.290.0100.00616.33
7.2.250.0030.01614.62
7.2.240.0050.01414.74
7.2.230.0020.01414.72
7.2.220.0050.01014.89
7.2.210.0040.01314.83
7.2.200.0080.00515.04
7.2.190.0050.01014.67
7.2.180.0030.00914.75
7.2.170.0020.01214.88
7.2.160.0030.00714.95
7.2.150.0060.00916.82
7.2.140.0060.00916.73
7.2.130.0060.00616.90
7.2.120.0040.01116.86
7.2.110.0030.00916.73
7.2.100.0030.00716.88
7.2.90.0000.01116.81
7.2.80.0090.00616.68
7.2.70.0110.00416.72
7.2.60.0050.00816.51
7.2.50.0090.00616.72
7.2.40.0030.00916.87
7.2.30.0100.00316.81
7.2.20.0070.00716.88
7.2.10.0030.01016.82
7.2.00.0070.00318.08
7.1.330.0080.00815.58
7.1.320.0050.00915.91
7.1.310.0070.00515.81
7.1.300.0080.00515.83
7.1.290.0050.00915.58
7.1.280.0070.01015.58
7.1.270.0050.00615.56
7.1.260.0100.00515.69
7.1.250.0090.00415.92
7.1.200.0140.01115.48
7.1.100.0030.00918.24
7.1.70.0030.00717.15
7.1.60.0190.00320.41
7.1.00.0000.07722.35
7.0.200.0800.00316.00
7.0.60.0030.08721.66
7.0.50.0100.08717.86
7.0.40.0300.06320.02
7.0.30.0430.06020.36
7.0.20.0270.07720.22
7.0.10.0300.07720.14
7.0.00.0370.06020.23
5.6.280.0070.07020.81
5.6.210.0100.03320.56
5.6.200.0030.08018.18
5.6.190.0200.06720.47
5.6.180.0230.06720.81
5.6.170.0330.06020.50
5.6.160.0370.05320.67
5.6.150.0270.06020.30
5.6.140.0330.06320.44
5.6.130.0070.07020.44
5.6.120.0370.08320.36
5.6.110.0170.07320.39
5.6.100.0270.06320.39
5.6.90.0230.07720.32
5.6.80.0130.05719.69
5.6.70.0130.07319.59
5.6.60.0170.06019.90
5.6.50.0200.05019.59
5.6.40.0070.06319.70
5.6.30.0100.06319.61
5.6.20.0270.04719.65
5.6.10.0230.05719.69
5.6.00.0270.05319.51
5.5.350.3270.04320.40
5.5.340.0100.03317.92
5.5.330.0170.06320.36
5.5.320.0370.06320.38
5.5.310.0400.06320.40
5.5.300.0330.05720.23
5.5.290.0230.06720.15
5.5.280.0400.07320.10
5.5.270.0370.06720.14
5.5.260.0300.05320.21
5.5.250.0170.05020.02
5.5.240.0130.06319.59
5.5.230.0070.06319.32
5.5.220.0330.06019.48
5.5.210.0230.04319.70
5.5.200.0270.04019.42
5.5.190.0130.06319.46
5.5.180.0170.05719.30
5.5.160.0130.06019.59
5.5.150.0230.05319.47
5.5.140.0130.05719.69
5.5.130.0170.05019.48
5.5.120.0100.06319.46
5.5.110.0170.05319.47
5.5.100.0300.04719.48
5.5.90.0170.05719.58
5.5.80.0070.06319.45
5.5.70.0070.06319.45
5.5.60.0170.05319.38
5.5.50.0170.05719.36
5.5.40.0130.05719.38
5.5.30.0130.05719.34
5.5.20.0200.04719.40
5.5.10.0230.04719.46
5.5.00.0130.06019.36

preferences:
61.31 ms | 400 KiB | 5 Q