3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array( 'foo' => 2, 'baz' => 3, 'bar' => 4, 'jim' => 2, ); function unique($input) { $output = array(); foreach ($input as $key => $val) { if (!in_array($val, $output)) { $output[$key] = $val; } } return $output; } var_dump(unique($array)); var_dump(array_flip(array_flip($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)
8.3.60.0000.01416.73
8.3.50.0110.00822.05
8.3.40.0140.00018.83
8.3.30.0120.00819.07
8.3.20.0080.00020.33
8.3.10.0040.00421.72
8.3.00.0090.00017.50
8.2.180.0090.00618.43
8.2.170.0110.00422.96
8.2.160.0070.00720.57
8.2.150.0040.00424.18
8.2.140.0030.00624.66
8.2.130.0090.00926.16
8.2.120.0000.00822.14
8.2.110.0060.00321.91
8.2.100.0110.00017.91
8.2.90.0040.00419.22
8.2.80.0000.00817.97
8.2.70.0000.00817.75
8.2.60.0080.00018.04
8.2.50.0040.00418.07
8.2.40.0000.00819.90
8.2.30.0060.00318.20
8.2.20.0030.00617.87
8.2.10.0030.00618.06
8.2.00.0030.00717.69
8.1.280.0090.00625.92
8.1.270.0090.00023.71
8.1.260.0080.00026.35
8.1.250.0000.00828.09
8.1.240.0030.00623.88
8.1.230.0080.00318.89
8.1.220.0000.00917.74
8.1.210.0030.00518.77
8.1.200.0030.00617.35
8.1.190.0050.00317.55
8.1.180.0000.01119.13
8.1.170.0080.00018.58
8.1.160.0080.00022.03
8.1.150.0000.00718.58
8.1.140.0070.00017.47
8.1.130.0000.00717.80
8.1.120.0080.00017.48
8.1.110.0000.00917.54
8.1.100.0050.00417.46
8.1.90.0040.00417.38
8.1.80.0070.00017.50
8.1.70.0070.00017.42
8.1.60.0000.00817.48
8.1.50.0050.00317.54
8.1.40.0030.00617.53
8.1.30.0030.00617.58
8.1.20.0000.00817.67
8.1.10.0000.00817.51
8.1.00.0030.00617.38
8.0.300.0040.00420.61
8.0.290.0040.00417.28
8.0.280.0080.00018.47
8.0.270.0000.00717.16
8.0.260.0000.00817.18
8.0.250.0030.00317.01
8.0.240.0000.00816.93
8.0.230.0000.00716.84
8.0.220.0000.00716.81
8.0.210.0000.00716.89
8.0.200.0030.00317.03
8.0.190.0030.00516.86
8.0.180.0040.00416.82
8.0.170.0030.00516.90
8.0.160.0030.00517.03
8.0.150.0070.00016.94
8.0.140.0030.00516.79
8.0.130.0040.00413.37
8.0.120.0040.00416.82
8.0.110.0040.00416.76
8.0.100.0040.00416.88
8.0.90.0040.00416.80
8.0.80.0040.01816.87
8.0.70.0050.00216.94
8.0.60.0050.00216.79
8.0.50.0040.00416.80
8.0.30.0060.01517.02
8.0.20.0090.00917.40
8.0.10.0000.00716.84
8.0.00.0040.01416.83
7.4.330.0000.00515.00
7.4.320.0030.00316.60
7.4.300.0030.00316.50
7.4.290.0030.00316.64
7.4.280.0080.00016.49
7.4.270.0040.00416.44
7.4.260.0000.00716.52
7.4.250.0030.00316.41
7.4.240.0020.00516.49
7.4.230.0030.00316.26
7.4.220.0150.00316.66
7.4.210.0090.00716.57
7.4.200.0040.00416.51
7.4.190.0080.00016.70
7.4.160.0100.00616.48
7.4.150.0110.00717.40
7.4.140.0140.00417.86
7.4.130.0080.01016.48
7.4.120.0110.00616.36
7.4.110.0100.00716.41
7.4.100.0180.00416.36
7.4.90.0090.00916.43
7.4.80.0110.00819.39
7.4.70.0150.00616.50
7.4.60.0130.01216.43
7.4.50.0080.00016.25
7.4.40.0060.00622.77
7.4.30.0080.00816.62
7.4.00.0050.00514.87
7.3.330.0000.00613.20
7.3.320.0000.00513.13
7.3.310.0030.00316.40
7.3.300.0060.00016.23
7.3.290.0090.00616.37
7.3.280.0080.00816.36
7.3.270.0090.00917.40
7.3.260.0100.01016.59
7.3.250.0090.00716.31
7.3.240.0090.00916.44
7.3.230.0140.00316.53
7.3.210.0080.00816.24
7.3.200.0100.01419.39
7.3.190.0120.00616.60
7.3.180.0100.00616.36
7.3.170.0120.00316.47
7.3.160.0100.00616.45
7.3.120.0030.01015.15
7.2.330.0080.01516.80
7.2.320.0170.00316.66
7.2.310.0130.00316.46
7.2.300.0100.00616.56
7.2.290.0070.01016.43
7.2.00.0000.01219.32
7.1.200.0080.00415.55
7.1.100.0090.00618.31
7.1.70.0040.00417.16
7.1.60.0140.01019.46
7.1.50.0100.01316.63
7.1.00.0030.07722.27
7.0.200.0000.00816.75
7.0.140.0030.07321.99
7.0.100.0030.04719.96
7.0.90.0070.03719.89
7.0.80.0100.08019.86
7.0.70.0130.04720.00
7.0.60.0030.05019.88
7.0.50.0030.06720.39
7.0.40.0130.05020.13
7.0.30.0030.05020.10
7.0.20.0030.04719.95
7.0.10.0030.04020.03
7.0.00.0100.07020.07
5.6.280.0130.06321.10
5.6.250.0100.06020.60
5.6.240.0100.07720.64
5.6.230.0030.08720.57
5.6.220.0030.04020.71
5.6.210.0030.04020.63
5.6.200.0030.07721.05
5.6.190.0070.03720.96
5.6.180.0070.06020.95
5.6.170.0000.04720.93
5.6.160.0070.03721.04
5.6.150.0100.05021.11
5.6.140.0000.04321.05
5.6.130.0030.05721.14
5.6.120.0000.04721.00
5.6.110.0030.05721.11
5.6.100.0170.04020.95
5.6.90.0130.03721.07
5.6.80.0000.04020.51
5.6.70.0030.04020.56
5.6.60.0030.05320.31
5.6.50.0000.06020.40
5.6.40.0030.08020.41
5.6.30.0200.06020.38
5.6.20.0230.06320.45
5.6.10.0170.05020.46
5.6.00.0130.07020.34
5.5.380.0030.04020.36
5.5.370.0130.07320.36
5.5.360.0070.04320.36
5.5.350.0070.04020.43
5.5.340.0030.04020.64
5.5.330.0070.07020.89
5.5.320.0100.05720.77
5.5.310.0070.04320.84
5.5.300.0070.03720.84
5.5.290.0000.04320.93
5.5.280.0030.04020.93
5.5.270.0030.06320.82
5.5.260.0100.05320.80
5.5.250.0030.04320.61
5.5.240.0070.06020.16
5.5.230.0000.04320.18
5.5.220.0030.05020.25
5.5.210.0100.03020.30
5.5.200.0100.07320.24
5.5.190.0100.04720.26
5.5.180.0130.07020.00
5.5.160.0100.04720.21
5.5.150.0130.07020.24
5.5.140.0000.07320.21
5.5.130.0000.09020.22
5.5.120.0070.06720.28
5.5.110.0070.08020.24
5.5.100.0100.07320.08
5.5.90.0130.05720.08
5.5.80.0030.07720.16
5.5.70.0130.07320.16
5.5.60.0100.04320.03
5.5.50.0070.07720.03
5.5.40.0170.07020.06
5.5.30.0170.05720.07
5.5.20.0030.03720.00
5.5.10.0070.07719.98
5.5.00.0070.04020.01
5.4.450.0030.07019.47
5.4.440.0070.04319.20
5.4.430.0070.03719.37
5.4.420.0030.03719.36
5.4.410.0100.03019.29
5.4.400.0030.03719.23
5.4.390.0000.04019.21
5.4.380.0000.07718.90
5.4.370.0100.03019.14
5.4.360.0030.08318.95
5.4.350.0100.07019.11
5.4.340.0170.07319.05
5.4.320.0070.07319.16
5.4.310.0100.07718.90
5.4.300.0070.07719.09
5.4.290.0130.06719.13
5.4.280.0100.04319.12
5.4.270.0030.04719.18
5.4.260.0100.07319.14
5.4.250.0100.07319.22
5.4.240.0030.08019.13
5.4.230.0100.07019.18
5.4.220.0070.07319.09
5.4.210.0070.07718.84
5.4.200.0070.07719.04
5.4.190.0100.07019.03
5.4.180.0000.08319.02
5.4.170.0100.06718.89
5.4.160.0100.06719.02
5.4.150.0070.08019.12
5.4.140.0070.07316.45
5.4.130.0000.05716.34
5.4.120.0030.07716.44
5.4.110.0000.06716.28
5.4.100.0030.07316.47
5.4.90.0030.07016.44
5.4.80.0030.07016.32
5.4.70.0070.07716.38
5.4.60.0230.06016.30
5.4.50.0030.06316.43
5.4.40.0070.04316.46
5.4.30.0100.07016.39
5.4.20.0100.07016.31
5.4.10.0030.07016.24
5.4.00.0130.06715.77
5.3.290.0130.07014.78
5.3.280.0000.08014.59
5.3.270.0070.07014.73
5.3.260.0100.05314.61
5.3.250.0130.06714.66
5.3.240.0100.07714.58
5.3.230.0000.08014.55
5.3.220.0070.07314.63
5.3.210.0070.07314.54
5.3.200.0100.07014.64
5.3.190.0030.07314.55
5.3.180.0000.07314.58
5.3.170.0070.06014.66
5.3.160.0100.04314.60
5.3.150.0130.06314.52
5.3.140.0070.07314.51
5.3.130.0030.07714.48
5.3.120.0030.07714.66
5.3.110.0030.07314.60
5.3.100.0070.07314.15
5.3.90.0100.07314.15
5.3.80.0130.06714.15
5.3.70.0070.08014.15
5.3.60.0030.08014.15
5.3.50.0130.06014.15
5.3.40.0100.07314.15
5.3.30.0130.06714.15
5.3.20.0100.06314.15
5.3.10.0130.06714.15
5.3.00.0070.07714.15
5.2.170.0030.06714.15
5.2.160.0070.06014.15
5.2.150.0030.05714.15
5.2.140.0070.06014.15
5.2.130.0000.06314.15
5.2.120.0070.06014.15
5.2.110.0070.05714.15
5.2.100.0130.05314.15
5.2.90.0100.06014.15
5.2.80.0070.05314.15
5.2.70.0130.05314.15
5.2.60.0070.06014.15
5.2.50.0100.05014.15
5.2.40.0100.05714.15
5.2.30.0070.06314.15
5.2.20.0100.05714.15
5.2.10.0100.04014.15
5.2.00.0100.05714.15
5.1.60.0030.05714.15
5.1.50.0130.04314.15
5.1.40.0130.04714.15
5.1.30.0130.04714.15
5.1.20.0070.05714.15
5.1.10.0070.05714.15
5.1.00.0030.04714.15
5.0.50.0070.04014.15
5.0.40.0070.02014.15
5.0.30.0070.05714.15
5.0.20.0000.04014.15
5.0.10.0030.04314.15
5.0.00.0070.07014.15
4.4.90.0030.03714.15
4.4.80.0000.03714.15
4.4.70.0100.03314.15
4.4.60.0130.02314.15
4.4.50.0070.03014.15
4.4.40.0070.05014.15
4.4.30.0000.02314.15
4.4.20.0000.02314.15
4.4.10.0000.03314.15
4.4.00.0030.05014.15
4.3.110.0030.03714.15
4.3.100.0000.02314.15
4.3.90.0030.03314.15
4.3.80.0000.05314.15
4.3.70.0030.03314.15
4.3.60.0030.02314.15
4.3.50.0000.02314.15
4.3.40.0030.05014.15
4.3.30.0000.02714.15
4.3.20.0000.03714.15
4.3.10.0000.04014.15
4.3.00.0000.03714.15

preferences:
38.75 ms | 401 KiB | 5 Q