3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = [ 'Brian', 'A', 'Leo', 'A', 'Mike' ]; $arr2 = [ 1,2,3,4,5 ]; $set = []; foreach($arr1 as $key => $value){ if(!isset($set[$value])) $set[$value] = true; else{ unset($arr1[$key]); unset($arr2[$key]); } } print_r($arr1); print_r($arr2);

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)
8.3.60.0160.00018.31
8.3.50.0140.00416.33
8.3.40.0040.01118.61
8.3.30.0090.00618.70
8.3.20.0040.00420.88
8.3.10.0030.00520.20
8.3.00.0060.00320.87
8.2.180.0110.00418.05
8.2.170.0040.01122.96
8.2.160.0070.00720.47
8.2.150.0000.01024.18
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0060.00326.16
8.2.110.0060.00322.25
8.2.100.0080.00417.84
8.2.90.0040.00417.88
8.2.80.0000.01018.82
8.2.70.0060.00317.93
8.2.60.0050.00518.16
8.2.50.0000.00719.06
8.2.40.0040.00421.07
8.2.30.0070.00019.23
8.2.20.0000.00818.09
8.2.10.0040.00419.23
8.2.00.0050.00319.27
8.1.280.0110.00425.92
8.1.270.0040.00422.59
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0000.01023.86
8.1.230.0070.00420.92
8.1.220.0050.00317.79
8.1.210.0090.00018.77
8.1.200.0030.00617.35
8.1.190.0050.00317.36
8.1.180.0000.00718.96
8.1.170.0090.00018.59
8.1.160.0040.00418.98
8.1.150.0040.00418.90
8.1.140.0040.00418.89
8.1.130.0000.00720.19
8.1.120.0030.00517.44
8.1.110.0000.00817.46
8.1.100.0000.00817.43
8.1.90.0040.00417.47
8.1.80.0080.00017.44
8.1.70.0000.00717.46
8.1.60.0080.00017.68
8.1.50.0040.00417.50
8.1.40.0090.00017.41
8.1.30.0040.00417.49
8.1.20.0000.00817.68
8.1.10.0050.00317.43
8.1.00.0040.00417.43
8.0.300.0070.00018.77
8.0.290.0040.00416.75
8.0.280.0070.00018.45
8.0.270.0000.00716.78
8.0.260.0000.00620.13
8.0.250.0000.00716.91
8.0.240.0040.00416.86
8.0.230.0070.00016.83
8.0.220.0040.00416.91
8.0.210.0000.00716.80
8.0.200.0030.00316.95
8.0.190.0020.00516.80
8.0.180.0060.00316.80
8.0.170.0040.00416.82
8.0.160.0030.00416.94
8.0.150.0060.00316.89
8.0.140.0030.00316.83
8.0.130.0080.00013.37
8.0.120.0000.00816.90
8.0.110.0000.00716.73
8.0.100.0030.00616.95
8.0.90.0080.00016.85
8.0.80.0080.01016.90
8.0.70.0060.00316.79
8.0.60.0040.00416.97
8.0.50.0050.00316.93
8.0.30.0040.01316.94
8.0.20.0120.00717.07
8.0.10.0000.00716.88
8.0.00.0040.01416.81
7.4.330.0020.00215.55
7.4.320.0030.00316.63
7.4.300.0000.00616.55
7.4.290.0040.00416.52
7.4.280.0000.00816.52
7.4.270.0050.00316.57
7.4.260.0000.00513.40
7.4.250.0030.00316.61
7.4.240.0010.00716.56
7.4.230.0030.00316.59
7.4.220.0030.00416.40
7.4.210.0080.00816.47
7.4.200.0030.00316.43
7.4.130.0060.01016.65
7.4.120.0090.00916.50
7.4.110.0090.00716.50
7.4.100.0110.00616.41
7.4.90.0130.00516.66
7.4.80.0100.01319.39
7.4.70.0060.01216.53
7.4.60.0120.00316.57
7.4.50.0070.00716.42
7.4.40.0110.00716.55
7.4.20.0100.00716.50
7.4.10.0170.00616.60
7.4.00.0050.01116.41
7.3.330.0000.00716.42
7.3.320.0030.00313.13
7.3.310.0040.00416.20
7.3.300.0030.00316.28
7.3.290.0100.00616.33
7.3.280.0070.01416.35
7.3.260.0140.00416.38
7.3.240.0060.01116.42
7.3.230.0100.00716.50
7.3.210.0140.00316.39
7.3.200.0100.01016.30
7.3.190.0130.00316.53
7.3.180.0070.01116.50
7.3.170.0160.00016.45
7.3.160.0100.00616.65
7.3.140.0160.00016.50
7.3.130.0110.01116.23
7.3.120.0110.00816.40
7.3.110.0100.00716.29
7.3.100.0090.00616.45
7.3.90.0120.00316.46
7.3.80.0060.00916.21
7.3.70.0060.00916.38
7.3.60.0100.00516.35
7.3.50.0030.01516.31
7.3.40.0040.01116.22
7.3.30.0140.00716.41
7.3.20.0050.01116.43
7.3.10.0130.00316.34
7.3.00.0080.00816.31
7.2.330.0040.01316.61
7.2.320.0090.00816.81
7.2.310.0060.00916.45
7.2.300.0090.00916.41
7.2.290.0100.00716.75
7.2.270.0060.00916.63
7.2.260.0060.00916.54
7.2.250.0060.00916.37
7.2.240.0030.01316.52
7.2.230.0120.00716.71
7.2.220.0040.01116.45
7.2.210.0080.00816.38
7.2.200.0120.00316.41
7.2.190.0120.00316.38
7.2.180.0120.00916.41
7.2.170.0090.01216.51
7.2.160.0160.00616.44
7.2.150.0060.01316.52
7.2.140.0450.00916.61
7.2.130.0210.00016.52
7.2.120.0170.00616.60
7.2.110.0060.01016.54
7.2.100.0090.01416.66
7.2.90.0030.01816.51
7.2.80.0100.01316.50
7.2.70.0090.00916.61
7.2.60.0060.01216.49
7.2.50.0110.00916.76
7.2.40.0000.01816.57
7.2.30.0080.01616.65
7.2.20.0110.01116.57
7.2.10.0060.01116.43
7.2.00.0030.01316.44

preferences:
64.09 ms | 400 KiB | 5 Q