3v4l.org

run code in 300+ PHP versions simultaneously
<?php class AliasPool { protected static $i = 0; public static function get () { $alias = ''; $j = self::$i; $done = false; while (!$done) { if ($j < 26) { $done = true; } $alias = chr(($j % 26) + ord('a')) . $alias; $j = floor($j / 26); } self::$i++; return $alias; } } for ($i = 0; $i < 60; ++$i) { var_dump(AliasPool::get()); print "\n"; }

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)
8.3.60.0090.00616.50
8.3.50.0080.01022.01
8.3.40.0120.00918.83
8.3.30.0060.00919.05
8.3.20.0040.00420.33
8.3.10.0050.00323.67
8.3.00.0060.00320.95
8.2.180.0090.00616.38
8.2.170.0040.01122.96
8.2.160.0070.00720.53
8.2.150.0040.00424.18
8.2.140.0060.00324.66
8.2.130.0110.01126.16
8.2.120.0080.00020.96
8.2.110.0040.00420.47
8.2.100.0080.00419.28
8.2.90.0040.00419.32
8.2.80.0030.00617.97
8.2.70.0030.00617.63
8.2.60.0030.00617.93
8.2.50.0030.00618.07
8.2.40.0040.00420.13
8.2.30.0060.00318.38
8.2.20.0000.00817.81
8.2.10.0080.00018.21
8.2.00.0060.00317.81
8.1.280.0040.01125.92
8.1.270.0050.00323.99
8.1.260.0050.00326.35
8.1.250.0060.00328.09
8.1.240.0070.00324.01
8.1.230.0030.00919.20
8.1.220.0080.00517.74
8.1.210.0050.00318.77
8.1.200.0070.00317.36
8.1.190.0050.00317.38
8.1.180.0080.00018.10
8.1.170.0040.00418.70
8.1.160.0030.00522.13
8.1.150.0070.00018.75
8.1.140.0060.00317.62
8.1.130.0050.00317.76
8.1.120.0070.00017.43
8.1.110.0000.00817.55
8.1.100.0000.00717.52
8.1.90.0030.00517.57
8.1.80.0000.00717.51
8.1.70.0020.00517.42
8.1.60.0040.00417.50
8.1.50.0030.00617.47
8.1.40.0000.00817.48
8.1.30.0000.01317.76
8.1.20.0080.00017.78
8.1.10.0000.00717.54
8.1.00.0030.00517.46
8.0.300.0080.00018.77
8.0.290.0070.00016.75
8.0.280.0000.00818.38
8.0.270.0040.00417.23
8.0.260.0070.00017.28
8.0.250.0050.00316.92
8.0.240.0050.00316.98
8.0.230.0020.00516.91
8.0.220.0070.00016.91
8.0.210.0060.00316.93
8.0.200.0030.00317.03
8.0.190.0030.00317.05
8.0.180.0040.00417.04
8.0.170.0000.00817.02
8.0.160.0040.00416.98
8.0.150.0040.00416.89
8.0.140.0040.00416.89
8.0.130.0000.00513.36
8.0.120.0040.00416.86
8.0.110.0040.00417.00
8.0.100.0000.00717.06
8.0.90.0000.00716.92
8.0.80.0130.01016.96
8.0.70.0000.00816.83
8.0.60.0040.00416.84
8.0.50.0040.00416.85
8.0.30.0090.01216.99
8.0.20.0150.00517.40
8.0.10.0050.00216.90
8.0.00.0070.01116.84
7.4.330.0030.00315.14
7.4.320.0030.00316.44
7.4.300.0030.00316.65
7.4.290.0040.00416.65
7.4.280.0000.00716.57
7.4.270.0040.00416.64
7.4.260.0040.00416.64
7.4.250.0080.00016.64
7.4.240.0010.00616.67
7.4.230.0040.00416.54
7.4.220.0190.00616.49
7.4.210.0120.00316.69
7.4.200.0000.00816.38
7.4.160.0070.01016.57
7.4.150.0150.01217.40
7.4.140.0090.01117.86
7.4.130.0100.01016.44
7.4.120.0080.01316.64
7.4.110.0120.00616.57
7.4.100.0080.01116.56
7.4.90.0060.01416.57
7.4.80.0100.01419.39
7.4.70.0130.00616.70
7.4.60.0110.00716.54
7.4.50.0070.00316.43
7.4.40.0110.00716.64
7.4.30.0100.00716.39
7.4.00.0120.00315.14
7.3.330.0000.00513.28
7.3.320.0030.00313.18
7.3.310.0050.00216.31
7.3.300.0070.00016.37
7.3.290.0090.01216.39
7.3.280.0080.00816.39
7.3.270.0150.00617.40
7.3.260.0160.00316.72
7.3.250.0140.00916.43
7.3.240.0190.00816.47
7.3.230.0030.01416.39
7.3.210.0150.00816.49
7.3.200.0070.01519.39
7.3.190.0090.00916.43
7.3.180.0060.00916.61
7.3.170.0090.00816.69
7.3.160.0090.00916.51
7.3.120.0060.01015.01
7.3.110.0060.00914.88
7.3.100.0100.00715.04
7.3.90.0030.01214.77
7.3.80.0060.00314.63
7.3.70.0070.00714.62
7.3.60.0070.01014.77
7.3.50.0110.00414.82
7.3.40.0040.00714.70
7.3.30.0090.00614.82
7.3.20.0060.00916.39
7.3.10.0020.01216.67
7.3.00.0030.01016.59
7.2.330.0040.01516.83
7.2.320.0120.00616.57
7.2.310.0160.00316.80
7.2.300.0060.01516.44
7.2.290.0110.00716.81
7.2.240.0050.00515.13
7.2.230.0060.00914.68
7.2.220.0130.00315.01
7.2.210.0040.00715.22
7.2.200.0000.01215.23
7.2.190.0060.00915.08
7.2.180.0030.00915.08
7.2.170.0040.01114.89
7.2.160.0090.00615.26
7.2.150.0030.00916.93
7.2.140.0000.01317.11
7.2.130.0050.00916.90
7.2.120.0070.00716.97
7.2.110.0070.01116.78
7.2.100.0080.00617.02
7.2.90.0020.01016.98
7.2.80.0080.00716.96
7.2.70.0070.00516.84
7.2.60.0030.00916.87
7.2.50.0080.00816.98
7.2.40.0060.00517.03
7.2.30.0070.00817.01
7.2.20.0030.01016.92
7.2.10.0080.00517.02
7.2.00.0060.00717.77
7.1.330.0040.00715.57
7.1.320.0060.01015.67
7.1.310.0030.00915.92
7.1.300.0090.00615.80
7.1.290.0130.00015.88
7.1.280.0100.00315.94
7.1.270.0030.01015.61
7.1.260.0070.01015.84
7.1.250.0070.00515.80
7.1.200.0080.00715.73
7.1.100.0060.00917.84
7.1.70.0080.00017.19
7.1.60.0140.01019.70
7.1.50.0100.01316.63
7.1.00.0030.07722.51
7.0.200.0050.00516.60
7.0.140.0030.07321.98
7.0.60.0100.06320.02
7.0.50.0100.07717.91
7.0.40.0000.05320.23
7.0.30.0070.05020.10
7.0.20.0400.07720.23
7.0.10.0030.09320.20
7.0.00.0030.08720.20
5.6.280.0170.08721.11
5.6.210.0030.08320.45
5.6.200.0030.04318.23
5.6.190.0000.05020.61
5.6.180.3930.04720.39
5.6.170.0230.07720.54
5.6.160.0070.04720.48
5.6.150.0070.08718.18
5.6.140.0000.06718.21
5.6.130.0070.05318.15
5.6.120.0070.09021.15
5.6.110.0100.07721.11
5.6.100.0130.07320.97
5.6.90.0030.04321.07
5.6.80.0070.04020.50
5.6.70.4500.03020.37
5.5.350.0100.06020.42
5.5.340.0070.06717.98
5.5.330.0070.05020.41
5.5.320.0400.07320.35
5.5.310.0130.04720.26
5.5.300.0000.05318.01
5.5.290.0100.07317.97
5.5.280.0030.05020.87
5.5.270.0170.07320.73
5.5.260.0070.03720.77
5.5.250.0070.03720.61
5.5.240.0200.03720.26
5.4.450.0270.04029.93
5.4.440.0530.04329.92
5.4.430.0400.04328.29
5.4.420.0400.04028.29
5.4.410.0330.03328.29
5.4.400.0370.04728.29
5.4.390.0270.04328.29
5.4.380.0070.06318.56
5.4.370.0230.04718.70
5.4.360.0170.05718.56
5.4.350.0130.05718.59
5.4.340.0170.06318.70
5.4.320.0040.04012.50
5.4.310.0040.04012.49
5.4.300.0080.03712.50
5.4.290.0110.05212.50
5.4.280.0110.05012.40
5.4.270.0110.04912.39
5.4.260.0110.05112.39
5.4.250.0100.04912.39
5.4.240.0120.04812.40
5.4.230.0130.04912.39
5.4.220.0120.05012.39
5.4.210.0100.04712.39
5.4.200.0110.04812.39
5.4.190.0120.04912.38
5.4.180.0140.04912.38
5.4.170.0100.04412.39
5.4.160.0090.04012.39
5.4.150.0070.04512.39
5.4.140.0150.04512.07
5.4.130.0090.03912.06
5.4.120.0100.04112.02
5.4.110.0080.03612.01
5.4.100.0120.03912.02
5.4.90.0110.04812.02
5.4.80.0140.04712.01
5.4.70.0110.04612.01
5.4.60.0080.04712.01
5.4.50.0120.04812.01
5.4.40.0160.04312.00
5.4.30.0110.04811.99
5.4.20.0100.04611.99
5.4.10.0120.04711.99
5.4.00.0130.04511.48
5.3.290.0080.03712.80
5.3.280.0050.04912.71
5.3.270.0080.05912.72
5.3.260.0080.05912.72
5.3.250.0070.04012.72
5.3.240.0090.04212.72
5.3.230.0100.04112.71
5.3.220.0090.04412.68
5.3.210.0100.04212.68
5.3.200.0080.04312.68
5.3.190.0100.04312.68
5.3.180.0080.05312.67
5.3.170.0120.05312.67
5.3.160.0080.05812.67
5.3.150.0100.04612.67
5.3.140.0090.05912.66
5.3.130.0070.06312.65
5.3.120.0120.05912.66
5.3.110.0120.05912.66
5.3.100.0070.05512.12
5.3.90.0100.05412.10
5.3.80.0070.05512.09
5.3.70.0100.05312.09
5.3.60.0090.05312.07
5.3.50.0080.05312.03
5.3.40.0150.04912.03
5.3.30.0070.05811.98
5.3.20.0080.05311.77
5.3.10.0060.05611.73
5.3.00.0070.05711.72
5.2.170.0070.0479.22
5.2.160.0040.0489.22
5.2.150.0110.0429.21
5.2.140.0110.0439.22
5.2.130.0100.0439.18
5.2.120.0100.0439.18
5.2.110.0080.0299.18
5.2.100.0070.0309.18
5.2.90.0070.0329.18
5.2.80.0070.0339.17
5.2.70.0090.0339.17
5.2.60.0070.0339.13
5.2.50.0070.0359.10
5.2.40.0120.0329.07
5.2.30.0060.0339.05
5.2.20.0090.0289.04
5.2.10.0090.0338.94
5.2.00.0080.0388.81
5.1.60.0050.0268.09
5.1.50.0050.0268.09
5.1.40.0060.0258.06
5.1.30.0060.0268.41
5.1.20.0080.0248.44
5.1.10.0030.0298.16
5.1.00.0100.0328.16
5.0.50.0090.0406.64
5.0.40.0070.0266.50
5.0.30.0060.0446.31
5.0.20.0040.0226.28
5.0.10.0060.0226.25
5.0.00.0050.0326.25
4.4.90.0020.0174.78
4.4.80.0080.0284.76
4.4.70.0070.0194.75
4.4.60.0040.0224.75
4.4.50.0060.0214.77
4.4.40.0050.0364.71
4.4.30.0020.0244.76
4.4.20.0040.0184.85
4.4.10.0020.0194.85
4.4.00.0040.0244.75
4.3.110.0040.0154.67
4.3.100.0020.0164.66
4.3.90.0040.0144.63
4.3.80.0020.0264.59
4.3.70.0030.0154.63
4.3.60.0020.0164.63
4.3.50.0030.0164.63
4.3.40.0050.0254.54
4.3.30.0030.0153.30
4.3.20.0050.0133.28
4.3.10.0030.0143.23
4.3.00.0030.01728.29

preferences:
55.59 ms | 401 KiB | 5 Q