3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = [1, 2, 3]; $arr2 = [2, 4, 1]; $arr1 += $arr2; var_dump($arr1); $arr1 = ["foo", "bar", "baz"]; $arr2 = ["bar", "qux", "foo"]; $arr1 += $arr2; var_dump($arr1); $arr1 = [1, 2, 3]; $arr2 = [2, 4, 1]; $arr1 = array_merge($arr1, $arr2); var_dump($arr1); $arr1 = ["foo", "bar", "baz"]; $arr2 = ["bar", "qux", "foo"]; $arr1 = array_merge($arr1, $arr2); var_dump($arr1);

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)
8.3.60.0090.00918.43
8.3.50.0090.00617.94
8.3.40.0120.00618.79
8.3.30.0000.01418.75
8.3.20.0040.00420.34
8.3.10.0000.00721.86
8.3.00.0050.00323.70
8.2.180.0060.01216.38
8.2.170.0070.01122.96
8.2.160.0080.00620.45
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0000.00718.21
8.2.120.0080.00026.35
8.2.110.0030.00721.03
8.2.100.0080.00417.72
8.2.90.0000.00817.91
8.2.80.0030.00517.97
8.2.70.0040.00417.79
8.2.60.0040.00418.03
8.2.50.0060.00318.10
8.2.40.0000.00819.30
8.2.30.0040.00419.12
8.2.20.0000.00817.94
8.2.10.0000.00819.30
8.2.00.0040.00418.12
8.1.280.0100.00725.92
8.1.270.0060.00318.83
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0100.00022.43
8.1.230.0080.00420.78
8.1.220.0030.00617.80
8.1.210.0110.00020.44
8.1.200.0000.00917.22
8.1.190.0030.00517.10
8.1.180.0040.00418.10
8.1.170.0040.00418.66
8.1.160.0000.00718.82
8.1.150.0040.00418.68
8.1.140.0020.00518.82
8.1.130.0030.00320.01
8.1.120.0050.00317.37
8.1.110.0040.00417.29
8.1.100.0040.00717.46
8.1.90.0080.00017.43
8.1.80.0000.00717.33
8.1.70.0040.00417.35
8.1.60.0030.00617.52
8.1.50.0000.00817.42
8.1.40.0050.00317.44
8.1.30.0070.00317.42
8.1.20.0040.00417.48
8.1.10.0000.00817.43
8.1.00.0000.00717.35
8.0.300.0030.00919.57
8.0.290.0000.00816.75
8.0.280.0050.00218.37
8.0.270.0000.00717.19
8.0.260.0030.00318.26
8.0.250.0080.00016.83
8.0.240.0060.00316.97
8.0.230.0030.00316.98
8.0.220.0050.00316.93
8.0.210.0040.00416.78
8.0.200.0000.00716.92
8.0.190.0020.00516.91
8.0.180.0080.00016.93
8.0.170.0040.00416.89
8.0.160.0050.00216.87
8.0.150.0090.00016.71
8.0.140.0070.00016.74
8.0.130.0030.00313.29
8.0.120.0070.00016.78
8.0.110.0000.00716.89
8.0.100.0070.00016.88
8.0.90.0040.00416.92
8.0.80.0100.00716.89
8.0.70.0040.00416.84
8.0.60.0000.00716.89
8.0.50.0080.00016.90
8.0.30.0100.00917.06
8.0.20.0030.01617.40
8.0.10.0040.00417.04
8.0.00.0130.00516.74
7.4.330.0060.00015.55
7.4.320.0060.00016.46
7.4.300.0060.00016.45
7.4.290.0000.00716.49
7.4.280.0000.00816.47
7.4.270.0070.00016.36
7.4.260.0040.00416.47
7.4.250.0070.00016.45
7.4.240.0070.00016.37
7.4.230.0030.00316.54
7.4.220.0040.00416.61
7.4.210.0120.00516.42
7.4.200.0000.00716.38
7.4.160.0080.00816.48
7.4.140.0130.00817.86
7.4.130.0150.00416.34
7.4.120.0100.01016.53
7.4.110.0220.00316.53
7.4.100.0140.01016.46
7.4.90.0040.01416.45
7.4.80.0170.00019.39
7.4.70.0030.01316.44
7.4.60.0140.00416.54
7.4.50.0140.00516.31
7.4.40.0140.00316.39
7.4.00.0070.01014.83
7.3.330.0000.00513.05
7.3.320.0000.00513.04
7.3.310.0000.00816.20
7.3.300.0000.00716.09
7.3.290.0070.00716.16
7.3.280.0070.01016.19
7.3.260.0100.01316.38
7.3.240.0120.00816.29
7.3.230.0100.00716.26
7.3.210.0060.00916.46
7.3.200.0110.00616.16
7.3.190.0100.00716.37
7.3.180.0100.01316.20
7.3.170.0070.01716.40
7.3.160.0100.00816.42
7.3.10.2770.01314.17
7.3.00.2460.00314.62
7.2.330.0060.01216.47
7.2.320.0160.00616.60
7.2.310.0140.00416.57
7.2.300.0110.01416.19
7.2.290.0140.00416.55
7.2.130.2360.00414.49
7.2.120.0310.00514.79
7.2.110.3080.01114.76
7.2.100.3950.00214.57
7.2.90.1950.00614.60
7.2.80.0290.01114.56
7.2.70.0620.00714.71
7.2.60.0740.01014.66
7.2.50.5270.00514.82
7.2.40.1920.00614.52
7.2.30.1250.00514.67
7.2.20.0240.00714.60
7.2.10.0310.00614.76
7.2.00.0340.00714.93
7.1.250.0360.00413.79
7.1.240.0690.00313.83
7.1.230.0480.01213.82
7.1.220.0190.00513.69
7.1.210.0490.01013.80
7.1.200.0380.00413.87
7.1.190.0570.00613.78
7.1.180.0470.00913.91
7.1.170.0460.01114.04
7.1.160.0550.01113.83
7.1.150.0670.00313.68
7.1.140.0580.01313.80
7.1.130.0520.00314.01
7.1.120.0600.00413.91
7.1.110.0500.01514.05
7.1.100.0430.01214.02
7.1.90.0530.00313.65
7.1.80.0200.00613.71
7.1.70.0530.00913.91
7.1.60.0000.01113.89
7.1.50.0460.00313.84
7.1.40.0580.00013.66
7.1.30.0400.00613.74
7.1.20.0120.01213.75
7.1.10.0480.00913.85
7.1.00.0500.00913.81
7.0.330.0370.00613.42
7.0.320.0490.01113.19
7.0.310.0520.01313.30
7.0.300.0570.00713.60
7.0.290.0350.00613.26
7.0.280.0530.00913.29
7.0.270.0610.00613.45
7.0.260.0490.01213.32
7.0.250.0410.01013.66
7.0.240.0420.00613.55
7.0.230.0080.00413.38
7.0.220.0570.00013.49
7.0.210.0610.00613.59
7.0.200.0340.00013.28
7.0.190.0600.00713.62
7.0.180.0670.00013.36
7.0.170.0410.00713.50
7.0.160.0420.00613.73
7.0.150.0560.00613.37
7.0.140.0140.00713.52
7.0.130.0430.00013.54
7.0.120.0590.00313.52
7.0.110.0550.00413.71
7.0.100.0540.01013.32
7.0.90.0580.00313.66
7.0.80.0400.00013.69
7.0.70.0550.00313.16
7.0.60.0570.00713.41
7.0.50.1380.00413.60
7.0.40.0370.00713.71
7.0.30.0460.00313.54
7.0.20.0460.00313.71
7.0.10.0400.00313.54
7.0.00.0640.00613.34
5.6.380.0240.01014.49
5.6.370.0110.01114.13
5.6.360.0090.01313.99
5.6.350.0130.00214.16
5.6.340.0140.01414.43
5.6.330.0120.00614.18
5.6.320.0060.00614.24
5.6.310.0070.00414.39
5.6.300.0130.00014.37
5.6.290.0080.00314.26
5.6.280.0080.00314.30
5.6.270.0070.00714.54
5.6.260.0120.00014.11
5.6.250.0060.00914.31
5.6.240.0090.00314.33
5.6.230.0030.01014.23
5.6.220.0030.00714.24
5.6.210.0140.00014.19
5.6.200.0030.00714.29
5.6.190.0060.00614.33
5.6.180.0000.01514.13
5.6.170.0090.00314.19
5.6.160.0050.00514.10
5.6.150.0110.00314.22
5.6.140.0040.00814.29
5.6.130.0050.00514.25
5.6.120.0050.00514.07
5.6.110.0080.00514.24
5.6.100.0100.00514.12
5.6.90.0060.01314.14
5.6.80.0100.00714.34
5.6.70.0110.01114.19
5.6.60.0090.00714.19
5.6.50.0080.00814.04
5.6.40.0000.01514.09
5.6.30.0060.00613.97
5.6.20.0030.01113.86
5.6.10.0080.00414.27
5.6.00.0070.00414.24
5.5.380.0050.00311.08
5.5.370.0020.00511.02
5.5.360.0050.00510.95
5.5.350.0030.00711.12
5.5.340.0050.00311.13
5.5.330.0060.00310.88
5.5.320.0030.00610.71
5.5.310.0020.00911.27
5.5.300.0060.00810.93
5.5.290.0030.00610.79
5.5.280.0000.00710.84
5.5.270.0040.00411.21
5.5.260.0030.00910.92
5.5.250.0080.00011.07
5.5.240.0000.01110.84
5.5.230.0070.00210.90
5.5.220.0000.00810.87
5.5.210.0080.00010.81
5.5.200.0000.01011.00
5.5.190.0110.00610.92
5.5.180.0080.00011.07
5.5.170.0080.00011.02
5.5.160.0000.00710.98
5.5.150.0000.00910.86
5.5.140.0030.00710.81
5.5.130.0000.01010.81
5.5.120.0080.00011.03
5.5.110.0070.00311.08
5.5.100.0040.00411.00
5.5.90.0030.00310.84
5.5.80.0050.00510.85
5.5.70.0080.00010.77
5.5.60.0040.00410.95
5.5.50.0120.00010.82
5.5.40.0000.01411.03
5.5.30.0000.00910.78
5.5.20.0000.01310.96
5.5.10.0070.00410.98
5.5.00.0050.00310.70
5.4.450.0090.00611.08
5.4.440.0040.01511.02
5.4.430.0080.00310.90
5.4.420.0060.00910.89
5.4.410.0060.00311.09
5.4.400.0080.01010.76
5.4.390.0090.00610.89
5.4.380.0070.00210.88
5.4.370.0060.00310.86
5.4.360.0030.00710.78
5.4.350.0090.00610.91
5.4.340.0060.00610.77
5.4.330.0050.00811.07
5.4.320.0120.00611.22
5.4.310.0030.00611.05
5.4.300.0050.00510.91
5.4.290.0050.00511.02
5.4.280.0050.00711.16
5.4.270.0000.00910.81
5.4.260.0020.00710.55
5.4.250.0000.01010.82
5.4.240.0050.00511.10
5.4.230.0080.00510.81
5.4.220.0050.00211.14
5.4.210.0090.00010.56
5.4.200.0070.00210.88
5.4.190.0040.00910.64
5.4.180.0000.01210.80
5.4.170.0080.00010.58
5.4.160.0050.00510.60
5.4.150.0090.00410.86
5.4.140.0060.00310.86
5.4.130.0060.00210.65
5.4.120.0140.00410.84
5.4.110.0000.00710.88
5.4.100.0060.00611.17
5.4.90.0060.01310.86
5.4.80.0160.00210.96
5.4.70.0060.00610.85
5.4.60.0090.00311.21
5.4.50.0110.00010.91
5.4.40.0080.00511.05
5.4.30.0040.00410.89
5.4.20.0020.00710.85
5.4.10.0110.00010.83
5.4.00.0040.00410.82
5.3.290.0120.00610.18
5.3.280.0060.00310.00
5.3.270.0020.00510.13
5.3.260.0000.00710.00
5.3.250.0080.00010.26
5.3.240.0020.00410.03
5.3.230.0050.00210.15
5.3.220.0070.00410.12
5.3.210.0100.00010.15
5.3.200.0000.00810.04
5.3.190.0090.00010.02
5.3.180.0110.00610.24
5.3.170.0070.00310.39
5.3.160.0000.01210.29
5.3.150.0070.00710.26
5.3.140.0090.00910.00
5.3.130.0050.00510.27
5.3.120.0140.00010.16
5.3.110.0090.00410.29
5.3.100.0110.00010.17
5.3.90.0080.00410.13
5.3.80.0030.00310.14
5.3.70.0070.0119.96
5.3.60.0130.00310.16
5.3.50.0050.00510.15
5.3.40.0070.00310.08
5.3.30.0000.00710.22
5.3.20.0070.00910.02
5.3.10.0050.0059.78
5.3.00.0080.0049.91
5.2.170.0070.0109.27
5.2.160.0000.0089.11
5.2.150.0030.0099.01
5.2.140.0050.0038.99
5.2.130.0000.0099.06
5.2.120.0070.0009.15
5.2.110.0090.0009.22
5.2.100.0060.0009.24
5.2.90.0090.0009.23
5.2.80.0040.0049.15
5.2.70.0020.0058.99
5.2.60.0080.0089.05
5.2.50.0100.0009.20
5.2.40.0050.0059.24
5.2.30.0040.0088.99
5.2.20.0110.0039.05
5.2.10.0090.0049.00
5.2.00.0070.0028.99
5.1.60.0090.0008.99
5.1.50.0130.0008.99
5.1.40.0050.0008.99
5.1.30.0080.0008.99
5.1.20.0030.0068.99
5.1.10.0070.0008.99
5.1.00.0000.0088.99
5.0.50.0090.0008.99
5.0.40.0040.0028.99
5.0.30.0090.0028.99
5.0.20.0000.0058.99
5.0.10.0070.0008.99
5.0.00.0040.0078.99
4.4.90.0020.0028.99
4.4.80.0000.0068.99
4.4.70.0040.0078.99
4.4.60.0030.0008.99
4.4.50.0050.0008.99
4.4.40.0030.0068.99
4.4.30.0000.0058.99
4.4.20.0050.0008.99
4.4.10.0080.0008.99
4.4.00.0030.0038.99
4.3.110.0040.0068.99
4.3.100.0080.0038.99
4.3.90.0000.0058.99
4.3.80.0080.0008.99
4.3.70.0030.0038.99
4.3.60.0000.0048.99
4.3.50.0040.0008.99
4.3.40.0060.0008.99
4.3.30.0040.0008.99
4.3.20.0040.0048.99
4.3.10.0030.0038.99
4.3.00.0040.0068.99

preferences:
70.22 ms | 400 KiB | 5 Q