3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = [1, 2, 3]; $arr2 = [2, 4, 1]; $arr1 += $arr2; print_r($arr1); $arr1 = ["foo", "bar", "baz"]; $arr2 = ["bar", "qux", "foo"]; $arr1 += $arr2; print_r($arr1); $arr1 = [1, 2, 3]; $arr2 = [2, 4, 1]; $arr1 = array_merge($arr1, $arr2); print_r($arr1); $arr1 = ["foo", "bar", "baz"]; $arr2 = ["bar", "qux", "foo"]; $arr1 = array_merge($arr1, $arr2); print_r($arr1); function returnArr($i) { return [ "foo". $i ]; } $arr = []; $arr1 = []; for ($i = 0; $i < 4; $i++) { $arr += returnArr($i); $arr1 = array_merge($arr1, returnArr($i)); } print_r($arr); print_r($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)
8.3.60.0000.01818.56
8.3.50.0040.01118.17
8.3.40.0120.00318.71
8.3.30.0110.00418.80
8.3.20.0020.00520.75
8.3.10.0000.00821.62
8.3.00.0050.00323.71
8.2.180.0070.01116.38
8.2.170.0070.01122.96
8.2.160.0070.00720.36
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0040.00418.21
8.2.120.0070.00026.35
8.2.110.0060.00320.58
8.2.100.0060.00617.91
8.2.90.0050.00317.78
8.2.80.0030.00517.97
8.2.70.0060.00318.05
8.2.60.0000.00818.22
8.2.50.0050.00318.10
8.2.40.0030.00519.52
8.2.30.0040.00419.30
8.2.20.0040.00418.12
8.2.10.0040.00419.41
8.2.00.0060.00318.00
8.1.280.0120.00925.92
8.1.270.0060.00319.01
8.1.260.0040.00426.35
8.1.250.0030.00528.09
8.1.240.0110.00722.08
8.1.230.0060.00623.96
8.1.220.0050.00317.79
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0080.00017.35
8.1.180.0000.00718.10
8.1.170.0000.00818.68
8.1.160.0070.00018.87
8.1.150.0040.00418.93
8.1.140.0040.00418.82
8.1.130.0070.00020.05
8.1.120.0040.00717.47
8.1.110.0030.00517.37
8.1.100.0090.00017.39
8.1.90.0040.00417.49
8.1.80.0040.00417.39
8.1.70.0030.00617.28
8.1.60.0060.00317.56
8.1.50.0000.00717.38
8.1.40.0000.00817.51
8.1.30.0000.00917.69
8.1.20.0000.00817.47
8.1.10.0000.00817.50
8.1.00.0050.00317.45
8.0.300.0000.00719.59
8.0.290.0040.00416.88
8.0.280.0070.00018.43
8.0.270.0040.00417.18
8.0.260.0030.00320.24
8.0.250.0000.00717.08
8.0.240.0030.00317.01
8.0.230.0070.00017.03
8.0.220.0040.00416.98
8.0.210.0000.00816.94
8.0.200.0000.00716.89
8.0.190.0030.00317.05
8.0.180.0060.00317.02
8.0.170.0040.00416.98
8.0.160.0070.00016.84
8.0.150.0040.00416.80
8.0.140.0040.00316.81
8.0.130.0060.00013.41
8.0.120.0070.00016.90
8.0.110.0040.00417.02
8.0.100.0040.00416.78
8.0.90.0040.00416.82
8.0.80.0100.00816.91
8.0.70.0000.00716.91
8.0.60.0000.00717.01
8.0.50.0040.00316.86
8.0.30.0140.00517.30
8.0.20.0080.01517.40
8.0.10.0040.00417.18
8.0.00.0130.00816.76
7.4.330.0050.00015.55
7.4.320.0030.00316.59
7.4.300.0000.00716.58
7.4.290.0000.00716.63
7.4.280.0030.00516.58
7.4.270.0000.00716.40
7.4.260.0050.00216.48
7.4.250.0040.00416.55
7.4.240.0070.00016.59
7.4.230.0050.00316.50
7.4.220.0030.00516.70
7.4.210.0090.00916.55
7.4.200.0030.00316.39
7.4.160.0060.00916.41
7.4.140.0120.00717.86
7.4.130.0140.00716.42
7.4.120.0070.01116.48
7.4.110.0110.00616.52
7.4.100.0100.01316.54
7.4.90.0120.00616.52
7.4.80.0160.00419.39
7.4.70.0070.01316.64
7.4.60.0060.01116.52
7.4.50.0040.00816.61
7.4.40.0120.00316.27
7.4.00.0000.01114.54
7.3.330.0030.00313.14
7.3.320.0000.00513.14
7.3.310.0000.00716.34
7.3.300.0060.00016.38
7.3.290.0000.00716.36
7.3.280.0090.00616.31
7.3.260.0090.01016.49
7.3.240.0110.00916.45
7.3.230.0140.00316.37
7.3.210.0110.00616.41
7.3.200.0100.00716.36
7.3.190.0140.00516.50
7.3.180.0070.01316.36
7.3.170.0210.00016.68
7.3.160.0030.01216.31
7.3.10.0810.00314.83
7.3.00.0310.00914.68
7.2.330.0090.00916.70
7.2.320.0120.00616.71
7.2.310.0060.01016.50
7.2.300.0130.01016.53
7.2.290.0100.01316.52
7.2.130.0510.01015.12
7.2.120.0140.00315.01
7.2.110.0750.00315.22
7.2.100.0580.00315.11
7.2.90.0900.00314.97
7.2.80.0700.00315.13
7.2.70.0480.01014.89
7.2.60.0460.00315.27
7.2.50.0310.00715.16
7.2.40.0480.00714.92
7.2.30.0430.01014.73
7.2.20.1320.00315.18
7.2.10.0370.00714.93
7.2.00.0350.00614.92
7.1.250.0710.01113.89

preferences:
55.75 ms | 400 KiB | 5 Q