3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array1 = ['key1' => 65456]; $array .= ['key2' => 'udfghf']; $array2 = ['key2' => 'udfghf']; $array = array_merge($array1, $array2); var_dump($array);

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)
8.3.60.0000.01518.28
8.3.50.0140.00016.35
8.3.40.0090.00618.70
8.3.30.0070.00718.64
8.3.20.0080.00020.09
8.3.10.0050.00321.64
8.3.00.0040.00417.66
8.2.180.0140.00316.88
8.2.170.0120.00322.96
8.2.160.0130.00720.33
8.2.150.0000.00724.18
8.2.140.0050.00324.66
8.2.130.0000.00720.38
8.2.120.0040.00426.35
8.2.110.0030.00622.29
8.2.100.0110.00317.91
8.2.90.0030.00618.91
8.2.80.0000.00818.05
8.2.70.0040.00717.50
8.2.60.0040.00418.04
8.2.50.0000.00918.10
8.2.40.0000.00720.59
8.2.30.0080.00021.08
8.2.20.0070.00317.95
8.2.10.0050.00318.11
8.2.00.0050.00218.05
8.1.280.0070.01125.92
8.1.270.0040.00423.91
8.1.260.0050.00326.35
8.1.250.0100.00328.09
8.1.240.0070.00323.88
8.1.230.0070.00719.23
8.1.220.0030.00517.74
8.1.210.0040.00418.77
8.1.200.0030.00617.10
8.1.190.0000.00817.10
8.1.180.0000.00718.10
8.1.170.0040.00418.52
8.1.160.0030.00618.91
8.1.150.0000.00718.88
8.1.140.0020.00519.56
8.1.130.0000.00718.86
8.1.120.0070.00017.25
8.1.110.0050.00217.38
8.1.100.0000.00717.40
8.1.90.0040.00417.45
8.1.80.0080.00017.35
8.1.70.0030.00317.38
8.1.60.0080.00017.40
8.1.50.0080.00017.46
8.1.40.0040.00417.49
8.1.30.0040.00717.61
8.1.20.0080.00017.62
8.1.10.0000.00817.44
8.1.00.0040.00417.41
8.0.300.0040.00418.77
8.0.290.0080.00016.75
8.0.280.0080.00018.35
8.0.270.0070.00317.18
8.0.260.0000.00816.79
8.0.250.0050.00216.97
8.0.240.0020.00516.91
8.0.230.0000.00717.02
8.0.220.0030.00316.76
8.0.210.0000.00816.84
8.0.200.0030.00316.83
8.0.190.0050.00316.84
8.0.180.0000.00816.92
8.0.170.0030.00316.88
8.0.160.0000.00716.85
8.0.150.0030.00316.79
8.0.140.0000.00716.73
8.0.130.0070.00013.27
8.0.120.0050.00316.75
8.0.110.0050.00316.77
8.0.100.0050.00216.77
8.0.90.0040.00416.76
8.0.80.0100.00616.76
8.0.70.0000.00716.77
8.0.60.0000.00716.74
8.0.50.0050.00316.75
8.0.30.0130.00617.19
8.0.20.0110.00917.40
8.0.10.0000.00716.94
8.0.00.0100.00716.89
7.4.330.0050.00015.55
7.4.320.0030.00316.35
7.4.300.0030.00316.43
7.4.290.0000.00916.36
7.4.280.0050.00216.47
7.4.270.0000.00816.43
7.4.260.0040.00416.51
7.4.250.0000.00716.45
7.4.240.0000.00816.38
7.4.230.0000.00716.32
7.4.220.0130.00616.51
7.4.210.0080.00716.46
7.4.200.0040.00316.38
7.4.160.0060.01116.46
7.4.150.0100.00717.40
7.4.140.0090.01117.86
7.4.130.0140.00716.42
7.4.120.0150.00416.33
7.4.110.0090.00916.43
7.4.100.0120.00616.28
7.4.90.0090.00916.23
7.4.80.0030.01619.39
7.4.70.0030.01616.61
7.4.60.0110.00716.60
7.4.50.0030.01416.60
7.4.40.0070.01116.56
7.4.30.0170.00716.38
7.4.00.0100.00614.79
7.3.330.0020.00212.94
7.3.320.0060.00013.11
7.3.310.0080.00016.00
7.3.300.0000.00616.21
7.3.290.0070.00016.15
7.3.280.0090.00816.16
7.3.270.0000.01717.40
7.3.260.0050.01216.32
7.3.250.0160.00716.19
7.3.240.0120.00716.20
7.3.230.0090.00816.18
7.3.210.0070.01016.34
7.3.200.0150.00316.54
7.3.190.0000.01616.23
7.3.180.0060.01216.37
7.3.170.0060.01016.18
7.3.160.0050.00816.27
7.3.10.0060.00816.54
7.3.00.0050.01016.50
7.2.330.0040.01316.48
7.2.320.0160.00616.62
7.2.310.0070.01016.50
7.2.300.0030.01316.66
7.2.290.0070.01016.56
7.2.130.0040.01216.72
7.2.120.0060.00616.68
7.2.110.0080.00416.67
7.2.100.0070.00616.57
7.2.90.0060.00616.72
7.2.80.0040.01116.35
7.2.70.0100.00316.67
7.2.60.0060.00916.73
7.2.50.0060.00616.68
7.2.40.0060.00616.79
7.2.30.0040.01216.65
7.2.20.0070.00316.72
7.2.10.0070.00716.77
7.2.00.0060.00717.98
7.1.250.0030.01015.64
7.1.200.0060.01015.69
7.1.100.0030.00718.14
7.1.70.0060.01117.01
7.1.60.0190.01434.98
7.1.50.0210.01034.91
7.1.40.0150.01834.37
7.1.30.0200.01434.56
7.1.20.0240.01934.69
7.1.10.0030.01516.56
7.1.00.0100.00816.63
7.0.200.0050.00916.75
7.0.190.0080.00616.77
7.0.180.0140.00716.27
7.0.170.0110.01316.17
7.0.160.0090.00816.00
7.0.150.0070.01016.27
7.0.140.0090.00616.42
7.0.130.0020.01516.38
7.0.120.0080.00916.23
7.0.110.0070.01116.22
7.0.100.0000.01916.32
7.0.90.0060.01116.36
7.0.80.0030.01416.33
7.0.70.0070.01016.37
7.0.60.0090.01816.29
7.0.50.0120.00516.40
7.0.40.0060.01116.42
7.0.30.0100.00716.50
7.0.20.0130.00316.44
7.0.10.0090.01216.38
7.0.00.0090.00816.32

preferences:
43.54 ms | 401 KiB | 5 Q