3v4l.org

run code in 300+ PHP versions simultaneously
<?php $names = array('Anderson','Beresford','Donovan','Amit','Graham'); $alphabet = array(); $previous_letter = ''; foreach($names as $value) { if($value[0] != $previous_letter) { $alphabet[] = $previous_letter = $value[0]; } } print_r($alphabet); ?>

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)
8.3.60.0000.01516.63
8.3.50.0090.01222.84
8.3.40.0180.00318.71
8.3.30.0070.00719.19
8.3.20.0040.00420.25
8.3.10.0050.00323.84
8.3.00.0040.00419.26
8.2.180.0060.00918.04
8.2.170.0090.00622.96
8.2.160.0070.00720.44
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0060.00326.16
8.2.120.0040.00420.98
8.2.110.0060.00322.25
8.2.100.0080.00317.91
8.2.90.0040.00418.34
8.2.80.0000.00818.73
8.2.70.0040.00417.63
8.2.60.0080.00017.75
8.2.50.0040.00417.55
8.2.40.0040.00420.47
8.2.30.0000.00719.43
8.2.20.0000.00817.75
8.2.10.0000.00818.05
8.2.00.0040.00417.75
8.1.280.0140.00325.92
8.1.270.0040.00423.91
8.1.260.0050.00226.35
8.1.250.0080.00028.09
8.1.240.0060.00319.12
8.1.230.0110.00317.67
8.1.220.0080.00017.74
8.1.210.0050.00318.77
8.1.200.0030.00617.35
8.1.190.0050.00317.35
8.1.180.0030.00518.10
8.1.170.0080.00018.50
8.1.160.0070.00020.78
8.1.150.0050.00218.95
8.1.140.0040.00417.47
8.1.130.0000.00717.83
8.1.120.0040.00417.38
8.1.110.0040.00417.46
8.1.100.0000.00717.46
8.1.90.0030.00317.46
8.1.80.0050.00317.44
8.1.70.0030.00317.47
8.1.60.0030.00617.66
8.1.50.0080.00017.59
8.1.40.0000.00817.54
8.1.30.0000.00817.66
8.1.20.0050.00317.60
8.1.10.0000.00717.45
8.1.00.0040.00417.37
8.0.300.0000.00818.77
8.0.290.0050.00516.63
8.0.280.0030.00318.32
8.0.270.0000.00717.17
8.0.260.0060.00017.13
8.0.250.0030.00317.00
8.0.240.0030.00316.86
8.0.230.0030.00316.96
8.0.220.0040.00416.88
8.0.210.0000.00716.89
8.0.200.0040.00417.02
8.0.190.0050.00316.94
8.0.180.0040.00416.85
8.0.170.0090.00016.96
8.0.160.0030.00316.91
8.0.150.0050.00216.78
8.0.140.0040.00416.90
8.0.130.0000.00713.36
8.0.120.0060.00316.91
8.0.110.0020.00516.81
8.0.100.0030.00617.01
8.0.90.0000.00716.96
8.0.80.0070.00716.83
8.0.70.0070.00016.87
8.0.60.0040.00416.91
8.0.50.0000.00716.68
8.0.30.0140.00916.98
8.0.20.0100.01017.40
8.0.10.0000.00716.92
8.0.00.0110.00616.79
7.4.330.0050.00015.00
7.4.320.0060.00016.50
7.4.300.0030.00316.57
7.4.290.0030.00316.65
7.4.280.0050.00316.61
7.4.270.0030.00316.36
7.4.260.0040.00416.50
7.4.250.0040.00416.48
7.4.240.0030.00516.51
7.4.230.0070.00016.63
7.4.220.0070.01016.54
7.4.210.0110.00316.50
7.4.200.0070.00016.68
7.4.160.0150.00416.42
7.4.150.0070.01017.40
7.4.140.0080.00817.86
7.4.130.0060.01116.39
7.4.120.0100.00716.43
7.4.110.0080.00816.41
7.4.100.0160.00616.45
7.4.90.0060.01016.48
7.4.80.0100.01019.39
7.4.70.0180.00316.39
7.4.60.0140.00316.39
7.4.50.0040.00416.39
7.4.40.0130.00316.43
7.4.30.0040.01516.72
7.4.00.0080.00814.81
7.3.330.0030.00313.21
7.3.320.0050.00013.17
7.3.310.0070.00016.18
7.3.300.0070.00016.24
7.3.290.0060.01216.22
7.3.280.0130.00316.26
7.3.270.0060.01217.40
7.3.260.0190.00416.38
7.3.250.0030.01316.50
7.3.240.0000.01616.38
7.3.230.0090.00616.39
7.3.210.0100.00916.23
7.3.200.0100.01319.39
7.3.190.0030.01316.67
7.3.180.0100.00616.36
7.3.170.0080.00816.37
7.3.160.0120.00416.38
7.2.330.0070.01016.42
7.2.320.0070.01016.54
7.2.310.0110.01116.36
7.2.300.0100.00716.74
7.2.290.0030.01516.51
7.2.00.0030.00919.69
7.1.100.0030.01318.06
7.1.70.0040.00417.16
7.1.60.0160.00919.46
7.1.50.0090.00617.14
7.1.00.0070.07322.30
7.0.200.0040.00416.85
7.0.140.0100.06722.10
7.0.60.0100.08019.94
7.0.50.0030.04717.86
7.0.40.0100.08320.09
7.0.30.0530.07720.19
7.0.20.0300.06720.20
7.0.10.0070.07020.30
7.0.00.0070.04020.10
5.6.280.0130.06021.09
5.6.210.0130.07720.62
5.6.200.0070.08018.25
5.6.190.0100.08020.45
5.6.180.0300.06720.47
5.6.170.0170.04020.57
5.6.160.0070.08320.39
5.6.150.0130.07318.18
5.6.140.0100.06318.18
5.6.130.0070.08018.15
5.6.120.0270.06721.12
5.6.110.0030.04020.99
5.6.100.0130.08021.10
5.6.90.0170.07021.10
5.6.80.0170.07020.50
5.6.70.0070.08320.51
5.5.350.0130.07020.52
5.5.340.0000.04017.92
5.5.330.0070.08020.13
5.5.320.0070.08020.30
5.5.310.0270.06720.41
5.5.300.0030.04318.02
5.5.290.0030.04318.08
5.5.280.0030.07320.79
5.5.270.0070.07720.86
5.5.260.0070.07320.96
5.5.250.0130.08020.68
5.5.240.0270.06320.11
5.4.450.0300.04319.49
5.4.440.0130.03719.53
5.4.430.0070.03319.45
5.4.420.0030.03319.54
5.4.410.0130.04719.42
5.4.400.0200.04019.00
5.4.390.0230.03319.22
5.4.380.0230.06018.75
5.4.370.0300.05018.56
5.4.360.0400.04718.71
5.4.350.0400.05318.68
5.4.340.0230.06718.71
5.4.320.0090.03512.48
5.4.310.0080.03712.48
5.4.300.0070.03712.48
5.4.290.0090.03612.48
5.4.280.0030.03912.38
5.4.270.0080.03512.38
5.4.260.0070.04212.38
5.4.250.0080.04212.38
5.4.240.0070.03812.38
5.4.230.0080.03812.37
5.4.220.0060.03712.37
5.4.210.0050.03712.37
5.4.200.0060.03812.37
5.4.190.0070.03712.36
5.4.180.0070.03812.37
5.4.170.0090.03412.38
5.4.160.0080.03512.37
5.4.150.0070.03712.37
5.4.140.0080.03612.05
5.4.130.0090.03312.04
5.4.120.0070.03512.00
5.4.110.0100.03411.99
5.4.100.0060.03612.00
5.4.90.0070.04511.99
5.4.80.0070.04712.00
5.4.70.0080.03811.99
5.4.60.0090.03511.99
5.4.50.0050.03711.99
5.4.40.0060.03611.98
5.4.30.0070.03511.98
5.4.20.0050.03611.98
5.4.10.0070.03611.98
5.4.00.0040.03611.47
5.3.290.0110.03912.80
5.3.280.0070.03712.70
5.3.270.0080.03812.72
5.3.260.0050.04012.72
5.3.250.0050.03912.72
5.3.240.0090.04912.72
5.3.230.0060.03912.71
5.3.220.0060.03912.68
5.3.210.0050.04012.68
5.3.200.0040.03912.68
5.3.190.0060.03712.68
5.3.180.0100.03312.67
5.3.170.0050.04012.67
5.3.160.0060.03612.67
5.3.150.0050.03812.67
5.3.140.0080.03612.66
5.3.130.0080.04412.66
5.3.120.0050.04012.66
5.3.110.0050.04012.66
5.3.100.0070.03712.12
5.3.90.0040.03912.09
5.3.80.0050.03912.08
5.3.70.0070.03612.08
5.3.60.0100.03312.06
5.3.50.0050.03712.01
5.3.40.0070.03612.01
5.3.30.0080.03411.97
5.3.20.0110.03211.75
5.3.10.0060.03611.71
5.3.00.0080.03411.70
5.2.170.0060.0309.20
5.2.160.0070.0399.21
5.2.150.0080.0299.21
5.2.140.0080.0299.20
5.2.130.0040.0339.16
5.2.120.0070.0369.16
5.2.110.0070.0289.16
5.2.100.0050.0309.16
5.2.90.0060.0299.17
5.2.80.0080.0299.16
5.2.70.0040.0319.16
5.2.60.0040.0309.11
5.2.50.0050.0319.08
5.2.40.0050.0299.06
5.2.30.0050.0329.04
5.2.20.0060.0289.02
5.2.10.0070.0278.93
5.2.00.0040.0318.79
5.1.60.0040.0348.07
5.1.50.0040.0258.06
5.1.40.0030.0278.04
5.1.30.0080.0308.39
5.1.20.0040.0298.41
5.1.10.0050.0258.14
5.1.00.0040.0278.14
5.0.50.0050.0196.61
5.0.40.0030.0196.47
5.0.30.0060.0296.29
5.0.20.0030.0206.26
5.0.10.0050.0206.24
5.0.00.0040.0326.24
4.4.90.0040.0144.78
4.4.80.0030.0154.75
4.4.70.0030.0164.75
4.4.60.0030.0164.75
4.4.50.0020.0164.77
4.4.40.0060.0304.71
4.4.30.0060.0224.76
4.4.20.0060.0204.85
4.4.10.0030.0224.85
4.4.00.0050.0254.76
4.3.110.0030.0164.67
4.3.100.0020.0154.66
4.3.90.0040.0134.63
4.3.80.0050.0224.59
4.3.70.0010.0164.63
4.3.60.0030.0154.63
4.3.50.0040.0144.63
4.3.40.0020.0254.54
4.3.30.0040.0143.29
4.3.20.0020.0163.27
4.3.10.0020.0153.23
4.3.00.0000.01718.23

preferences:
49.05 ms | 401 KiB | 5 Q