3v4l.org

run code in 300+ PHP versions simultaneously
<?php $r = array_unique(array_merge_recursive(array(1, 2, 3), array(1, 2, 3))); var_dump($r);

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)
8.3.60.0090.01316.75
8.3.50.0070.00716.27
8.3.40.0100.01018.42
8.3.30.0040.01118.42
8.3.20.0070.00020.26
8.3.10.0000.00723.66
8.3.00.0030.00619.67
8.2.180.0070.01018.05
8.2.170.0100.00622.96
8.2.160.0070.00718.91
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0040.01119.34
8.2.120.0050.00326.35
8.2.110.0040.00420.35
8.2.100.0040.00817.75
8.2.90.0040.00419.08
8.2.80.0040.00417.97
8.2.70.0000.00817.63
8.2.60.0000.00717.80
8.2.50.0030.00618.10
8.2.40.0040.00420.45
8.2.30.0040.00420.84
8.2.20.0040.00418.04
8.2.10.0040.00418.09
8.2.00.0040.00417.91
8.1.270.0070.00023.63
8.1.260.0090.00026.35
8.1.250.0000.00828.09
8.1.240.0030.00922.01
8.1.230.0070.00419.04
8.1.220.0000.00817.74
8.1.210.0080.00018.77
8.1.200.0000.01017.35
8.1.190.0000.00917.23
8.1.180.0000.00918.10
8.1.170.0090.00018.54
8.1.160.0030.00319.00
8.1.150.0040.00418.86
8.1.140.0030.00519.41
8.1.130.0000.00718.86
8.1.120.0040.00417.39
8.1.110.0040.00417.22
8.1.100.0040.00417.28
8.1.90.0000.00717.37
8.1.80.0040.00417.39
8.1.70.0000.00717.37
8.1.60.0000.00817.46
8.1.50.0040.00417.41
8.1.40.0030.00617.33
8.1.30.0040.00417.47
8.1.20.0040.00417.51
8.1.10.0030.00617.43
8.1.00.0050.00217.26
8.0.300.0040.00418.77
8.0.290.0000.00816.75
8.0.280.0070.00018.36
8.0.270.0030.00317.14
8.0.260.0030.00316.67
8.0.250.0070.00016.87
8.0.240.0070.00016.88
8.0.230.0040.00416.88
8.0.220.0000.00716.82
8.0.210.0070.00016.80
8.0.200.0000.00616.91
8.0.190.0030.00516.82
8.0.180.0060.00316.88
8.0.170.0070.00016.76
8.0.160.0070.00016.75
8.0.150.0030.00316.66
8.0.140.0030.00316.69
8.0.130.0030.00313.20
8.0.120.0040.00416.83
8.0.110.0000.00716.71
8.0.100.0030.00516.88
8.0.90.0000.00816.67
8.0.80.0130.00316.77
8.0.70.0080.00016.93
8.0.60.0030.00516.66
8.0.50.0000.00816.80
8.0.30.0100.00817.05
8.0.20.0150.00517.40
8.0.10.0040.00416.74
8.0.00.0060.01216.86
7.4.330.0000.00515.55
7.4.320.0040.00416.44
7.4.300.0030.00316.44
7.4.290.0000.00716.52
7.4.280.0030.00516.34
7.4.270.0000.00716.48
7.4.260.0030.00316.41
7.4.250.0070.00016.53
7.4.240.0040.00416.45
7.4.230.0070.00016.52
7.4.220.0190.00616.50
7.4.210.0120.00916.37
7.4.200.0000.00716.46
7.4.160.0110.00716.39
7.4.150.0060.01217.40
7.4.140.0110.00717.86
7.4.130.0140.00716.37
7.4.120.0120.01116.40
7.3.330.0000.00512.96
7.3.320.0030.00313.01
7.3.310.0080.00016.16
7.3.300.0070.00016.09
7.3.290.0090.00816.13
7.3.280.0080.00916.12
7.3.270.0090.00917.40
7.3.260.0110.01216.19
7.3.250.0130.00516.28
7.3.240.0110.00616.07

preferences:
43.78 ms | 400 KiB | 5 Q