3v4l.org

run code in 300+ PHP versions simultaneously
<?php $first = ['a' => 1, 'b' => 2]; $second = ['a' => 3, 'd' => 4]; var_dump($first + $second); var_dump(array_merge($second, $first)); var_dump(array_merge($second, $first) === $first + $second);

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)
8.3.60.0140.00718.18
8.3.50.0060.00917.99
8.3.40.0110.00718.76
8.3.30.0140.00418.58
8.3.20.0050.00319.17
8.3.10.0080.00021.85
8.3.00.0080.00020.82
8.2.180.0180.00318.16
8.2.170.0100.00322.96
8.2.160.0060.00820.80
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00419.83
8.2.120.0090.00026.35
8.2.110.0160.00621.00
8.2.100.0030.00917.91
8.2.90.0030.00517.75
8.2.80.0000.00817.97
8.2.70.0040.00417.80
8.2.60.0040.00417.97
8.2.50.0050.00318.10
8.2.40.0030.00619.16
8.2.30.0000.00919.07
8.2.20.0040.00418.04
8.2.10.0080.00017.99
8.2.00.0040.00417.55
8.1.280.0070.01425.92
8.1.270.0080.00020.65
8.1.260.0080.00026.35
8.1.250.0030.00528.09
8.1.240.0030.00623.89
8.1.230.0090.00322.69
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0060.00317.10
8.1.190.0060.00317.10
8.1.180.0000.00818.10
8.1.170.0030.00518.31
8.1.160.0070.00018.86
8.1.150.0000.00718.81
8.1.140.0040.00422.06
8.1.130.0030.00321.92
8.1.120.0070.00017.39
8.1.110.0000.00717.33
8.1.100.0020.00517.29
8.1.90.0000.00717.37
8.1.80.0030.00517.42
8.1.70.0030.00317.37
8.1.60.0040.00417.40
8.1.50.0030.00517.46
8.1.40.0040.00717.34
8.1.30.0040.00417.56
8.1.20.0000.00817.47
8.1.10.0050.00317.53
8.1.00.0040.00417.45
8.0.300.0050.00318.77
8.0.290.0040.00416.63
8.0.280.0000.00718.48
8.0.270.0000.00717.07
8.0.260.0040.00418.29
8.0.250.0000.00716.88
8.0.240.0030.00516.92
8.0.230.0000.00716.97
8.0.220.0050.00216.74
8.0.210.0000.00916.84
8.0.200.0000.00716.86
8.0.190.0030.00316.96
8.0.180.0040.00416.92
8.0.170.0040.00416.88
8.0.160.0040.00416.84
8.0.150.0070.00316.89
8.0.140.0040.00416.85
8.0.130.0060.00013.25
8.0.120.0030.00516.88
8.0.110.0040.00416.83
8.0.100.0000.00716.92
8.0.90.0050.00216.96
8.0.80.0090.00916.85
8.0.70.0030.00616.91
8.0.60.0000.00816.70
8.0.50.0000.00716.76
8.0.30.0120.00916.99
8.0.20.0090.01117.40
8.0.10.0000.00717.03
8.0.00.0100.00916.69
7.4.330.0000.00515.55
7.4.320.0060.00016.60
7.4.300.0060.00016.39
7.4.290.0030.00716.58
7.4.280.0040.00416.43
7.4.270.0040.00416.43
7.4.260.0050.00216.54
7.4.250.0000.00816.45
7.4.240.0080.00016.63
7.4.230.0000.00716.68
7.4.220.0030.00516.69
7.4.210.0080.00916.54
7.4.200.0050.00216.40
7.4.160.0110.00716.38
7.4.140.0100.01117.86
7.4.130.0190.00016.52
7.4.120.0090.01016.47
7.4.110.0150.00616.48
7.4.100.0090.00916.30
7.4.90.0060.01516.49
7.4.80.0080.00819.39
7.4.70.0090.01216.41
7.4.60.0090.00916.48
7.4.50.0000.01716.22
7.4.40.0190.00616.43
7.4.00.0040.01114.99
7.3.330.0030.00313.19
7.3.320.0000.00513.09
7.3.310.0040.00416.11
7.3.300.0000.00716.16
7.3.290.0030.00316.24
7.3.280.0060.01316.30
7.3.260.0070.01016.46
7.3.240.0070.01516.31
7.3.230.0060.01616.25
7.3.210.0110.00716.30
7.3.200.0080.00816.56
7.3.190.0060.01716.25
7.3.180.0060.01116.45
7.3.170.0060.01216.40
7.3.160.0110.00616.50
7.3.120.0030.01414.78
7.3.110.0060.00914.64
7.3.100.0080.00614.78
7.3.90.0030.01114.89
7.3.80.0030.01014.92
7.3.70.0090.00514.94
7.3.60.0090.00514.57
7.3.50.0040.00814.78
7.3.40.0030.01014.76
7.3.30.0060.00914.70
7.3.20.0090.00616.58
7.3.10.0060.00716.58
7.3.00.0080.00516.69
7.2.330.0070.01016.13
7.2.320.0100.01316.57
7.2.310.0080.00816.30
7.2.300.0090.01216.15
7.2.290.0120.00316.54
7.2.250.0100.00715.14
7.2.240.0080.00814.82
7.2.230.0020.01014.98
7.2.220.0090.00815.18
7.2.210.0050.00714.90
7.2.200.0090.00514.94
7.2.190.0070.00714.93
7.2.180.0060.00714.96
7.2.170.0080.00814.83
7.2.160.0080.00314.59
7.2.150.0060.00616.92
7.2.140.0100.00716.58
7.2.130.0080.00416.64
7.2.120.0110.00416.77
7.2.110.0090.00916.56
7.2.100.0060.01116.58
7.2.90.0070.01116.73
7.2.80.0040.01516.58
7.2.70.0070.01116.59
7.2.60.0090.00916.70
7.2.50.0120.00516.76
7.2.40.0060.00916.66
7.2.30.0070.00816.86
7.2.20.0070.00916.57
7.2.10.0110.00616.69
7.2.00.0020.01416.70
7.1.330.0100.00615.90
7.1.320.0050.00515.57
7.1.310.0020.01415.66
7.1.300.0050.01015.75
7.1.290.0020.01215.70
7.1.280.0020.01415.55
7.1.270.0110.00315.54
7.1.260.0070.00315.70
7.1.250.0030.01315.75
7.1.230.0030.01315.59
7.1.220.0060.00915.80
7.1.210.0060.01015.79
7.1.200.0120.00315.81
7.1.190.0060.00915.66
7.1.180.0110.00415.58
7.1.170.0040.01215.42
7.1.160.0070.00515.81
7.1.150.0080.00615.69
7.1.140.0080.00515.57
7.1.130.0080.00815.65
7.1.120.0000.01615.90
7.1.110.0060.00915.61
7.1.100.0060.00915.57
7.1.90.0120.00315.89
7.1.80.0040.00815.70
7.1.70.0000.01515.76
7.1.60.0250.00933.86
7.1.50.0210.01033.90
7.1.40.0170.01433.83
7.1.30.0210.01833.81
7.1.20.0250.00933.51
7.1.10.0090.00315.70
7.1.00.0080.00415.48
5.6.380.0140.00314.46

preferences:
63.36 ms | 400 KiB | 5 Q