3v4l.org

run code in 300+ PHP versions simultaneously
<?php $value = 2; $array = [1, 2, 3]; array_unshift($array,$value); // prepend a duplicate var_export(array_unique($array)); // kill the original echo "\n---\n"; $value = 2; $array = [1, 2, 3]; var_export(array_unique(array_merge([$value],$array))); // prepend a duplicate, kill the original echo "\n---\n"; $value = 2; $array = [1, 2, 3]; array_unshift($array,$value); // prepend a duplicate var_export(array_keys(array_keys($array))); // kill the original echo "\n---\n"; $value = 2; $array = [1, 2, 3]; var_export(array_keys(array_keys(array_merge([$value],$array)))); // prepend a duplicate, kill the original

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)
8.3.70.0060.00916.58
8.3.60.0090.00618.45
8.3.50.0040.01116.16
8.3.40.0090.00618.68
8.3.30.0080.00818.68
8.3.20.0080.00019.10
8.3.10.0030.00520.93
8.3.00.0080.00017.93
8.2.180.0110.01116.50
8.2.170.0040.01122.96
8.2.160.0030.01019.16
8.2.150.0090.00024.18
8.2.140.0030.00524.66
8.2.130.0070.00019.82
8.2.120.0070.00026.35
8.2.110.0100.00720.57
8.2.100.0040.00717.84
8.2.90.0060.00317.75
8.2.80.0030.00618.78
8.2.70.0050.00317.80
8.2.60.0080.00017.79
8.2.50.0080.00518.10
8.2.40.0000.00921.03
8.2.30.0040.00419.44
8.2.20.0040.00418.11
8.2.10.0000.00817.94
8.2.00.0040.00419.56
8.1.280.0120.00625.92
8.1.270.0040.00423.91
8.1.260.0080.00026.35
8.1.250.0080.00028.09
8.1.240.0030.00623.92
8.1.230.0040.00819.16
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0080.00017.38
8.1.190.0040.00417.23
8.1.180.0070.00018.10
8.1.170.0000.00818.62
8.1.160.0030.00518.93
8.1.150.0030.00618.85
8.1.140.0050.00217.57
8.1.130.0030.00319.04
8.1.120.0080.00017.49
8.1.110.0000.00717.42
8.1.100.0120.00017.47
8.1.90.0070.00017.41
8.1.80.0000.00717.44
8.1.70.0040.00417.36
8.1.60.0040.00417.56
8.1.50.0040.00417.51
8.1.40.0050.00317.40
8.1.30.0000.01017.69
8.1.20.0080.00017.59
8.1.10.0050.00217.46
8.1.00.0000.00817.36
8.0.300.0040.00419.61
8.0.290.0000.00916.63
8.0.280.0000.00718.51
8.0.270.0000.00717.25
8.0.260.0030.00617.21
8.0.250.0040.00416.82
8.0.240.0060.00316.87
8.0.230.0000.00816.82
8.0.220.0000.00816.88
8.0.210.0030.00316.91
8.0.200.0030.00316.98
8.0.190.0040.00416.94
8.0.180.0030.00516.94
8.0.170.0060.00316.88
8.0.160.0000.00716.89
8.0.150.0000.00716.90
8.0.140.0070.00016.88
8.0.130.0000.00513.33
8.0.120.0000.00816.84
8.0.110.0030.00616.90
8.0.100.0070.00016.75
8.0.90.0050.00316.89
8.0.80.0100.00716.86
8.0.70.0070.00016.86
8.0.60.0030.00516.93
8.0.50.0000.00716.74
8.0.30.0110.00717.00
8.0.20.0100.01417.40
8.0.10.0030.00516.86
8.0.00.0130.00816.72
7.4.330.0000.00515.55
7.4.320.0030.00316.61
7.4.300.0020.00516.51
7.4.290.0030.00316.45
7.4.280.0000.00716.57
7.4.270.0030.00316.61
7.4.260.0060.00316.57
7.4.250.0000.00716.36
7.4.240.0070.00016.40
7.4.230.0000.00716.65
7.4.220.0000.00716.39
7.4.210.0070.01016.55
7.4.200.0030.00516.61
7.4.160.0130.00516.55
7.4.140.0090.00917.86
7.4.130.0160.00716.57
7.4.120.0110.00816.53
7.4.110.0060.00916.43
7.4.100.0070.01316.49
7.4.90.0170.00016.44
7.4.80.0060.01819.39
7.4.70.0080.00816.47
7.4.60.0100.00716.25
7.4.50.0080.00816.38
7.4.40.0040.01416.61
7.4.00.0000.01714.85
7.3.330.0000.00513.02
7.3.320.0000.00613.04
7.3.310.0040.00416.07
7.3.300.0070.00016.27
7.3.290.0030.00316.10
7.3.280.0080.00816.19
7.3.260.0110.00916.35
7.3.240.0120.00516.33
7.3.230.0070.01616.49
7.3.210.0030.01916.29
7.3.200.0110.01116.39
7.3.190.0060.01016.26
7.3.180.0030.01316.12
7.3.170.0150.00416.19
7.3.160.0060.01216.32
7.2.330.0130.01016.34
7.2.320.0150.00316.45
7.2.310.0070.01116.65
7.2.300.0060.01016.32
7.2.290.0160.00016.39
7.2.80.0220.00016.34
7.2.60.0140.01214.87
7.2.50.1940.00814.98
7.2.40.2270.01515.63
7.2.30.2230.01215.38
7.2.20.2090.01315.27
7.2.10.1920.01315.57
7.2.00.2020.01015.34
7.1.200.0030.01015.57
7.1.170.1620.00813.76
7.1.160.2020.01316.90
7.1.150.1790.01016.96
7.1.140.2030.01316.75
7.1.130.2260.01416.91
7.1.120.2210.01516.68
7.1.110.2160.01316.38
7.1.100.2110.01416.32
7.1.90.2220.01516.08
7.1.80.2330.00916.35
7.1.70.2120.01015.18
7.1.60.2020.01533.13
7.1.50.2230.01432.67
7.1.40.2030.01732.31
7.1.30.2540.01732.67
7.1.20.3050.01832.76
7.1.10.2520.00814.70
7.1.00.2390.01314.95

preferences:
58.37 ms | 401 KiB | 5 Q