3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = ['foo' => 17, 'a', 'bar' => 18, 'b']; $bar = [99 => 'b', 'bar' => 19, 98 => 'c']; $baz = array_merge($foo, $bar); var_dump($baz);

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)
8.4.120.0110.01020.61
8.4.110.0140.00622.57
8.4.100.0140.00817.39
8.4.90.0040.00517.59
8.4.80.0080.01117.84
8.4.70.0030.00517.58
8.4.60.0110.00918.64
8.4.50.0140.00817.50
8.4.40.0180.00419.42
8.4.30.0090.00920.05
8.4.20.0100.01019.37
8.4.10.0070.01326.04
8.3.250.0070.00918.88
8.3.240.0080.01116.74
8.3.230.0130.00616.34
8.3.220.0100.00617.02
8.3.210.0090.00616.34
8.3.200.0060.00316.53
8.3.190.0120.00717.21
8.3.180.0090.00916.73
8.3.170.0150.00316.26
8.3.160.0060.01220.71
8.3.150.0070.00016.92
8.3.140.0000.00820.59
8.3.130.0030.00916.34
8.3.120.0000.00818.98
8.3.110.0140.00020.94
8.3.100.0130.00324.06
8.3.90.0040.00426.77
8.3.80.0030.00616.36
8.3.70.0120.00316.63
8.3.60.0120.00317.91
8.3.50.0090.00620.21
8.3.40.0160.00418.52
8.3.30.0040.01118.84
8.3.20.0000.00724.18
8.3.10.0050.00224.66
8.3.00.0040.00426.16
8.2.290.0160.00320.55
8.2.280.0090.01119.95
8.2.270.0110.00716.83
8.2.260.0000.00816.68
8.2.250.0090.00018.36
8.2.240.0090.00616.94
8.2.230.0030.00622.58
8.2.220.0090.00037.54
8.2.210.0040.00426.77
8.2.200.0060.00316.25
8.2.190.0200.00016.58
8.2.180.0000.01425.92
8.2.170.0070.01418.91
8.2.160.0070.00722.96
8.2.150.0080.00025.66
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00026.16
8.2.110.0000.00820.35
8.2.100.0060.00617.72
8.2.90.0060.00319.05
8.2.80.0040.00417.97
8.2.70.0050.00317.50
8.2.60.0040.00417.93
8.2.50.0000.00818.07
8.2.40.0060.00319.76
8.2.30.0000.00718.04
8.2.20.0000.00720.33
8.2.10.0040.00417.92
8.2.00.0000.00819.17
8.1.330.0100.00616.53
8.1.320.0110.00715.78
8.1.310.0150.00315.91
8.1.300.0120.00620.30
8.1.290.0060.00330.84
8.1.280.0100.00725.92
8.1.270.0040.00423.99
8.1.260.0080.00026.35
8.1.250.0000.00828.09
8.1.240.0160.00321.67
8.1.230.0110.00020.87
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0030.00717.22
8.1.190.0030.00617.10
8.1.180.0040.00418.10
8.1.170.0000.00818.48
8.1.160.0040.00418.75
8.1.150.0040.00418.47
8.1.140.0040.00417.29
8.1.130.0030.00318.82
8.1.120.0040.00417.27
8.1.110.0000.00717.40
8.1.100.0040.00417.39
8.1.90.0030.00317.36
8.1.80.0030.00617.35
8.1.70.0000.00717.28
8.1.60.0060.00317.54
8.1.50.0250.00017.41
8.1.40.0230.00317.35
8.1.30.0210.00317.54
8.1.20.0180.00717.40
8.1.10.0190.00717.48
8.1.00.0190.00417.23
8.0.300.0030.00618.77
8.0.290.0000.00716.75
8.0.280.0000.00718.40
8.0.270.0000.00718.01
8.0.260.0030.00318.38
8.0.250.0000.00716.89
8.0.240.0050.00316.74
8.0.230.0050.00216.91
8.0.220.0000.00716.71
8.0.210.0040.00416.77
8.0.200.0070.00016.79
8.0.190.0000.00716.77
8.0.180.0070.00716.70
8.0.170.0130.00316.71
8.0.160.0100.00216.67
8.0.150.0050.00916.56
8.0.140.0140.00316.70
8.0.130.0140.00316.66
8.0.120.0140.00316.61
8.0.110.0150.00616.79
8.0.100.0220.00016.75
8.0.90.0130.01116.79
8.0.80.0190.00316.66
8.0.70.0180.00316.83
8.0.60.0160.00516.64
8.0.50.0170.00316.81
8.0.30.0090.00916.60
8.0.20.0210.00016.70
8.0.10.0160.00316.96
7.4.330.0060.00015.55
7.4.320.0000.00616.50
7.4.300.0040.00416.53
7.4.290.0000.00716.50
7.4.280.0230.00016.48
7.4.270.0180.00416.31
7.4.260.0200.00516.43
7.4.250.0200.00616.33
7.4.240.0190.00516.49
7.4.230.0180.00616.38
7.4.220.0160.00416.43
7.4.210.0160.00616.52
7.4.200.0140.00316.51
7.4.190.0160.00516.49
7.4.180.0110.00716.57
7.4.160.0150.00616.43
7.4.150.0140.00716.31
7.4.140.0180.00316.29
7.4.130.0150.00516.21
7.4.120.0140.00916.28
7.4.110.0210.00016.23
7.4.100.0150.00716.49
7.4.90.0140.00716.27
7.4.80.0190.00516.25
7.4.70.0160.00516.29
7.4.60.0110.01016.20
7.4.50.0120.00916.07
7.4.40.0160.00316.29
7.4.30.0140.00716.34
7.4.20.0150.00216.32
7.4.10.0170.00316.30
7.4.00.0160.00616.36

preferences:
27.85 ms | 403 KiB | 5 Q