3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(array_merge_recursive(array(array('uid' => 1), array('uid' => 2)), array(array('foo' => 'bar'), array('foo' => '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)
8.3.60.0120.00418.18
8.3.50.0090.00617.94
8.3.40.0110.00418.46
8.3.30.0120.00318.48
8.3.20.0040.00420.25
8.3.10.0070.00023.64
8.3.00.0080.00019.66
8.2.180.0180.00318.16
8.2.170.0110.00422.96
8.2.160.0120.00319.15
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0040.00422.13
8.2.120.0040.00426.35
8.2.110.0030.00620.54
8.2.100.0100.00719.45
8.2.90.0030.00517.78
8.2.80.0030.00522.14
8.2.70.0030.00617.91
8.2.60.0090.00317.68
8.2.50.0040.00418.10
8.2.40.0030.00620.31
8.2.30.0040.00719.03
8.2.20.0040.00417.80
8.2.10.0040.00417.86
8.2.00.0040.00418.00
8.1.280.0070.01125.92
8.1.270.0040.00422.06
8.1.260.0060.00326.35
8.1.250.0070.00028.09
8.1.240.0050.00323.88
8.1.230.0140.00020.90
8.1.220.0070.00017.74
8.1.210.0030.00618.77
8.1.200.0030.00617.23
8.1.190.0090.00317.40
8.1.180.0000.00918.10
8.1.170.0000.00818.49
8.1.160.0040.00418.82
8.1.150.0070.00020.27
8.1.140.0000.00717.68
8.1.130.0030.00318.95
8.1.120.0070.00017.16
8.1.110.0000.00817.35
8.1.100.0020.00517.37
8.1.90.0030.00517.22
8.1.80.0080.00017.29
8.1.70.0080.00017.31
8.1.60.0060.00317.48
8.1.50.0030.00517.29
8.1.40.0040.00417.39
8.1.30.0040.00417.40
8.1.20.0000.00817.43
8.1.10.0040.00417.38
8.1.00.0040.00417.23
8.0.300.0040.00420.21
8.0.290.0090.00016.63
8.0.280.0000.00718.17
8.0.270.0070.00017.14
8.0.260.0030.00316.72
8.0.250.0030.00516.89
8.0.240.0000.00716.69
8.0.230.0000.00716.84
8.0.220.0030.00316.76
8.0.210.0030.00316.66
8.0.200.0030.00316.76
8.0.190.0060.00316.79
8.0.180.0060.00316.71
8.0.170.0030.00616.77
8.0.160.0070.00016.67
8.0.150.0070.00016.59
8.0.140.0040.00416.71
8.0.130.0060.00013.27
8.0.120.0040.00416.65
8.0.110.0020.00516.74
8.0.100.0070.00016.66
8.0.90.0060.00316.80
8.0.80.0070.00716.77
8.0.70.0000.00716.54
8.0.60.0040.00416.80
8.0.50.0000.00716.77
8.0.30.0080.01116.88
8.0.20.0140.00617.40
8.0.10.0070.00016.75
8.0.00.0110.00716.62
7.4.330.0000.00515.55
7.4.320.0070.00016.48
7.4.300.0030.00316.47
7.4.290.0040.00416.37
7.4.280.0000.00716.46
7.4.270.0030.00616.48
7.4.260.0030.00316.43
7.4.250.0040.00416.34
7.4.240.0030.00316.39
7.4.230.0000.00816.53
7.4.220.0000.00816.57
7.4.210.0080.00816.39
7.4.200.0000.00716.28
7.4.160.0140.00316.35
7.4.150.0090.00917.40
7.4.140.0110.00817.86
7.4.130.0110.00716.26
7.4.120.0120.01016.33
7.4.110.0130.00316.08
7.4.100.0120.00616.19
7.4.90.0140.00416.31
7.4.80.0090.01119.39
7.4.70.0130.01016.32
7.4.60.0100.00616.35
7.4.50.0060.01016.32
7.4.40.0240.00016.34
7.4.00.0070.00714.78
7.3.330.0000.00512.97
7.3.320.0060.00012.97
7.3.310.0030.00616.09
7.3.300.0030.00316.00
7.3.290.0030.00316.01
7.3.280.0080.01016.13
7.3.270.0150.00317.40
7.3.260.0110.01116.15
7.3.250.0130.00716.32
7.3.240.0100.00816.20
7.3.230.0150.00316.47
7.3.210.0100.00716.11
7.3.200.0090.00616.18
7.3.190.0170.00316.13
7.3.180.0080.00816.07
7.3.170.0120.01016.14
7.3.160.0190.00016.40
7.3.10.0030.00716.63
7.3.00.0110.00016.55
7.2.330.0040.01316.21
7.2.320.0120.00616.51
7.2.310.0090.00916.22
7.2.300.0070.01116.34
7.2.290.0160.00916.46
7.2.130.0030.01416.60
7.2.120.0070.00316.84
7.2.110.0030.01016.92
7.2.100.0060.00616.42
7.2.90.0070.00716.50
7.2.80.0100.00316.80
7.2.70.0000.01116.50
7.2.60.0050.00916.68
7.2.50.0030.01016.55
7.2.40.0100.00316.38
7.2.30.0070.00716.39
7.2.20.0050.01217.96
7.2.10.0040.01018.05
7.2.00.0080.00818.26
7.1.250.0060.00615.56
7.1.200.0130.00015.30
7.1.140.0100.01018.75
7.1.130.0030.01118.17
7.1.120.0000.01818.47
7.1.110.0060.00917.91
7.1.100.0130.00718.06
7.1.90.0060.00917.80
7.1.80.0100.01018.09
7.1.70.0040.01417.05
7.1.60.0270.01035.06
7.1.50.0140.01434.61
7.1.40.0200.01634.32
7.1.30.0280.00334.21
7.1.20.0260.00634.67
7.1.10.0090.00616.39
7.1.00.0060.01216.46

preferences:
41.25 ms | 401 KiB | 5 Q