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

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)
8.3.60.0140.00018.20
8.3.50.0090.00917.86
8.3.40.0070.00718.71
8.3.30.0090.00918.81
8.3.20.0000.00819.15
8.3.10.0040.00420.59
8.3.00.0040.00417.93
8.2.180.0150.00816.63
8.2.170.0120.00322.96
8.2.160.0090.00619.04
8.2.150.0000.00724.18
8.2.140.0040.00424.66
8.2.130.0000.00819.83
8.2.120.0080.00026.35
8.2.110.0090.00022.20
8.2.100.0120.00017.91
8.2.90.0000.00817.75
8.2.80.0080.00018.96
8.2.70.0000.00817.63
8.2.60.0050.00317.38
8.2.50.0050.00317.55
8.2.40.0050.00218.03
8.2.30.0030.00619.54
8.2.20.0060.00317.93
8.2.10.0050.00318.04
8.2.00.0000.00719.42
8.1.280.0070.00725.92
8.1.270.0050.00322.27
8.1.260.0030.00526.35
8.1.250.0050.00328.09
8.1.240.0030.00620.62
8.1.230.0110.00017.64
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0000.00817.35
8.1.190.0000.00817.43
8.1.180.0000.00818.10
8.1.170.0000.00917.62
8.1.160.0030.00519.00
8.1.150.0060.00318.76
8.1.140.0070.00017.75
8.1.130.0030.00319.00
8.1.120.0040.00317.44
8.1.110.0050.00217.37
8.1.100.0070.00417.45
8.1.90.0000.00817.48
8.1.80.0080.00017.34
8.1.70.0040.00417.28
8.1.60.0060.00317.50
8.1.50.0070.00017.40
8.1.40.0080.00017.46
8.1.30.0030.00617.58
8.1.20.0050.00317.51
8.1.10.0000.00817.47
8.1.00.0000.00817.37
8.0.300.0040.00418.77
8.0.290.0040.00416.75
8.0.280.0040.00418.31
8.0.270.0000.00817.17
8.0.260.0030.00317.25
8.0.250.0030.00316.99
8.0.240.0040.00416.95
8.0.230.0050.00316.93
8.0.220.0040.00416.79
8.0.210.0070.00016.91
8.0.200.0000.00616.79
8.0.190.0060.00316.96
8.0.180.0040.00416.96
8.0.170.0040.00416.88
8.0.160.0000.00716.91
8.0.150.0040.00416.71
8.0.140.0000.00816.74
8.0.130.0000.00513.32
8.0.120.0000.00916.84
8.0.110.0040.00416.81
8.0.100.0040.00416.78
8.0.90.0070.00416.75
8.0.80.0090.00816.93
8.0.70.0040.00416.73
8.0.60.0000.00816.77
8.0.50.0040.00416.76
8.0.30.0110.00617.08
8.0.20.0060.01317.40
8.0.10.0070.00017.05
8.0.00.0100.00816.74
7.4.330.0000.00515.55
7.4.320.0000.00616.62
7.4.300.0000.00616.48
7.4.290.0030.00316.51
7.4.280.0050.00216.63
7.4.270.0000.00716.60
7.4.260.0030.00316.63
7.4.250.0070.00016.52
7.4.240.0030.00316.60
7.4.230.0070.00016.44
7.4.220.0000.00716.45
7.4.210.0110.00816.47
7.4.200.0080.00016.47
7.4.160.0130.00716.47
7.4.140.0120.00817.86
7.4.130.0170.00316.50
7.4.120.0090.01016.47
7.4.110.0100.00716.62
7.4.100.0160.00616.47
7.4.90.0110.01116.50
7.4.80.0120.01219.39
7.4.70.0110.00616.62
7.4.60.0070.01316.49
7.4.50.0110.00416.38
7.4.40.0120.00616.54
7.4.00.0050.01215.06
7.3.330.0000.00513.12
7.3.320.0060.00013.06
7.3.310.0050.00316.28
7.3.300.0030.00316.08
7.3.290.0060.00016.17
7.3.280.0070.00716.19
7.3.260.0070.01116.22
7.3.240.0140.00816.31
7.3.230.0070.01016.16
7.3.210.0100.00716.07
7.3.200.0030.01316.39
7.3.190.0070.01016.24
7.3.180.0140.00616.28
7.3.170.0160.00616.37
7.3.160.0040.01216.26
7.3.120.0130.00614.72
7.3.110.0030.01314.66
7.3.100.0070.01014.97
7.3.90.0030.01314.63
7.3.80.0040.00714.84
7.3.70.0070.00714.88
7.3.60.0060.01214.84
7.3.50.0110.00314.80
7.3.40.0090.00314.63
7.3.30.0130.00314.70
7.3.20.0130.00316.67
7.3.10.0130.00616.39
7.3.00.0060.00616.57
7.2.330.0060.01116.20
7.2.320.0060.01216.29
7.2.310.0130.01016.65
7.2.300.0070.01116.57
7.2.290.0060.01316.71
7.2.250.0040.01414.93
7.2.240.0070.01315.20
7.2.230.0070.00714.83
7.2.220.0030.01514.92
7.2.210.0070.01014.94
7.2.200.0070.00714.75
7.2.190.0040.01114.88
7.2.180.0000.01214.63
7.2.170.0070.01015.06
7.2.130.0030.00916.87
7.2.120.0030.00916.52
7.2.110.0040.00716.87
7.2.100.0070.00316.73
7.2.90.0060.00916.73
7.2.80.0090.00616.86
7.2.70.0030.00916.55
7.2.60.1210.01015.90
7.2.50.1070.00915.88
7.2.40.1130.01016.20
7.2.30.1010.00816.05
7.2.20.1100.00716.02
7.2.10.1800.01116.02
7.2.00.1200.00816.07
7.1.330.0000.01415.77
7.1.320.0040.00415.92
7.1.310.0090.00315.54
7.1.300.0000.01715.66
7.1.290.0000.01315.82
7.1.280.0030.00615.62
7.1.270.0080.00515.38
7.1.260.0150.00316.01
7.1.250.0120.00015.47
7.1.240.0000.00915.73
7.1.230.0040.01115.84
7.1.220.0030.00915.62
7.1.210.0070.00315.79
7.1.200.0020.00915.74
7.1.190.0100.00315.75
7.1.180.0000.01515.83
7.1.170.1210.00714.77
7.1.160.1140.00816.14
7.1.150.1190.00816.22
7.1.140.1200.00515.91
7.1.130.1220.00716.14
7.1.120.1230.01016.24
7.1.110.1250.00816.09
7.1.100.1180.01316.18
7.1.90.1370.01116.00
7.1.80.1310.01015.98
7.1.70.1460.01015.44
7.1.60.1230.00924.47
7.1.50.1330.01124.31
7.1.40.1270.01124.18
7.1.30.1270.00724.27
7.1.20.0970.01124.22
7.1.10.0940.00815.18
7.1.00.1350.01315.31
7.0.330.0030.00715.33
5.6.380.0060.00314.34

preferences:
55.72 ms | 401 KiB | 5 Q