3v4l.org

run code in 300+ PHP versions simultaneously
<?php $memoize = function ($fn, $cacheKeyFn = null, $limit = null) { $cache = array(); return function () use ($fn, $cacheKeyFn, $limit, & $cache) { $args = func_get_args(); if ($cacheKeyFn) { $key = call_user_func_array($cacheKeyFn, $args); } else { $key = reset($args); } if (isset($cache[$key])) { return $cache[$key]; } $result = call_user_func_array($fn, $args); if ($limit !== null && count($cache) === $limit) { array_shift($cache); } $cache[$key] = $result; return $result; }; }; $numCalls = 0; $memoFib = $memoize( function ($n) use (& $memoFib, & $numCalls) { $numCalls++; if ($n === 1 || $n === 2) return 1; return $memoFib($n - 1) + $memoFib($n - 2); } ); echo $numCalls . PHP_EOL; echo $memoFib(1) . PHP_EOL; echo $numCalls . PHP_EOL; echo $memoFib(2) . PHP_EOL; echo $numCalls . PHP_EOL;

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)
8.3.60.0150.00716.88
8.3.50.0110.00622.85
8.3.40.0070.00719.00
8.3.30.0040.01219.17
8.3.20.0080.00020.42
8.3.10.0040.00423.70
8.3.00.0070.00319.38
8.2.180.0110.00418.16
8.2.170.0030.01422.96
8.2.160.0040.01120.52
8.2.150.0060.00324.18
8.2.140.0060.00324.66
8.2.130.0000.00826.16
8.2.120.0040.00420.96
8.2.110.0100.01022.21
8.2.100.0070.00418.22
8.2.90.0050.00319.20
8.2.80.0050.00317.97
8.2.70.0030.00617.50
8.2.60.0060.00317.68
8.2.50.0030.00618.07
8.2.40.0060.00319.88
8.2.30.0030.00718.13
8.2.20.0040.00417.72
8.2.10.0040.00418.18
8.2.00.0000.00817.81
8.1.280.0070.00725.92
8.1.270.0050.00523.91
8.1.260.0030.00626.35
8.1.250.0050.00328.09
8.1.240.0100.00023.97
8.1.230.0030.00919.14
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0090.00317.22
8.1.190.0030.00617.36
8.1.180.0080.00018.10
8.1.170.0030.00618.59
8.1.160.0040.00422.05
8.1.150.0040.00418.84
8.1.140.0090.00017.42
8.1.130.0070.00017.73
8.1.120.0050.00217.48
8.1.110.0080.00017.45
8.1.100.0050.00317.53
8.1.90.0040.00417.53
8.1.80.0040.00417.39
8.1.70.0040.00417.33
8.1.60.0000.00817.63
8.1.50.0040.00417.45
8.1.40.0060.00317.56
8.1.30.0040.00417.70
8.1.20.0000.00817.51
8.1.10.0030.00617.56
8.1.00.0040.00417.52
8.0.300.0000.00718.77
8.0.290.0040.00416.75
8.0.280.0030.00318.48
8.0.270.0030.00317.21
8.0.260.0030.00317.28
8.0.250.0070.00017.00
8.0.240.0000.00717.03
8.0.230.0030.00316.95
8.0.220.0000.00816.86
8.0.210.0000.00716.82
8.0.200.0000.00816.97
8.0.190.0040.00417.03
8.0.180.0050.00316.83
8.0.170.0060.00316.86
8.0.160.0090.00016.98
8.0.150.0000.00716.93
8.0.140.0000.00716.91
8.0.130.0040.00413.39
8.0.120.0000.00816.78
8.0.110.0050.00316.95
8.0.100.0000.00716.72
8.0.90.0050.00316.95
8.0.80.0030.01716.92
8.0.70.0040.00416.80
8.0.60.0060.00316.91
8.0.50.0000.00716.94
8.0.30.0100.01117.11
8.0.20.0130.00717.40
8.0.10.0000.00817.03
8.0.00.0090.01216.93
7.4.330.0000.00515.09
7.4.320.0030.00316.66
7.4.300.0000.00716.53
7.4.290.0030.00316.49
7.4.280.0040.00416.55
7.4.270.0030.00316.63
7.4.260.0050.00316.56
7.4.250.0000.00716.38
7.4.240.0030.00316.61
7.4.230.0030.00316.63
7.4.220.0100.00916.65
7.4.210.0090.00616.45
7.4.200.0000.00816.51
7.4.160.0060.00916.37
7.4.150.0070.01117.40
7.4.140.0100.00717.86
7.4.130.0080.00816.51
7.4.120.0080.00816.54
7.4.110.0120.01216.68
7.4.100.0130.00416.64
7.4.90.0180.00016.52
7.4.80.0150.00719.39
7.4.70.0100.00716.65
7.4.60.0070.01016.62
7.4.50.0060.00016.32
7.4.40.0070.01016.63
7.4.30.0060.01016.64
7.4.00.0040.00714.75
7.3.330.0030.00313.36
7.3.320.0030.00313.14
7.3.310.0070.00016.45
7.3.300.0030.00316.22
7.3.290.0140.00416.36
7.3.280.0060.01116.35
7.3.270.0150.00917.40
7.3.260.0170.00416.41
7.3.250.0080.00816.43
7.3.240.0110.00616.63
7.3.230.0060.01216.39
7.3.210.0100.00716.50
7.3.200.0080.01519.39
7.3.190.0120.00316.40
7.3.180.0150.00416.64
7.3.170.0050.01116.40
7.3.160.0090.00616.40
7.3.120.0150.00014.84
7.3.110.0000.01814.61
7.3.100.0030.01014.48
7.3.90.0110.00714.94
7.3.80.0060.00315.09
7.3.70.0060.01014.76
7.3.60.0040.00714.96
7.3.50.0060.00614.62
7.3.40.0060.00615.00
7.3.30.0030.01314.73
7.3.20.0060.00616.84
7.3.10.0150.00016.47
7.3.00.0060.00316.46
7.2.330.0110.00716.84
7.2.320.0100.00716.79
7.2.310.0070.01116.77
7.2.300.0120.00616.51
7.2.290.0080.00816.64
7.2.240.0030.01515.15
7.2.230.0000.01315.19
7.2.220.0060.00615.04
7.2.210.0120.00314.70
7.2.200.0030.00915.21
7.2.190.0070.01015.22
7.2.180.0030.01214.82
7.2.170.0060.00915.21
7.2.160.0030.01315.11
7.2.150.0030.00917.10
7.2.140.0040.01216.98
7.2.130.0100.00616.70
7.2.120.0060.00917.11
7.2.110.0070.00416.73
7.2.100.0000.01416.95
7.2.90.0060.00616.85
7.2.80.0060.00916.76
7.2.70.0030.00616.95
7.2.60.0070.00716.71
7.2.50.0060.00917.00
7.2.40.0040.00816.82
7.2.30.0070.00317.03
7.2.20.0070.01017.00
7.2.10.0060.01017.13
7.2.00.0060.00718.30
7.1.330.0030.01315.94
7.1.320.0070.00715.77
7.1.310.0030.00715.46
7.1.300.0100.00315.57
7.1.290.0080.00415.80
7.1.280.0060.00915.82
7.1.270.0030.01015.88
7.1.260.0090.00615.62
7.1.250.0030.01215.63
7.1.200.0070.00715.75
7.1.100.0030.00917.98
7.1.70.0000.00817.22
7.1.60.0130.01019.40
7.1.50.0100.01016.76
7.1.00.0000.08022.45
7.0.200.0040.00416.66
7.0.140.0070.07321.96
7.0.60.0070.03719.86
7.0.50.0070.04017.98
7.0.40.0170.07720.06
7.0.30.0170.04720.18
7.0.20.0230.03320.22
7.0.10.0100.08720.06
7.0.00.0100.08320.30
5.6.280.0070.07020.83
5.6.210.0070.08320.45
5.6.200.0030.07718.19
5.6.190.0070.08720.51
5.6.180.0200.07720.46
5.6.170.0370.07720.57
5.6.160.0070.05320.51
5.6.150.0200.07018.18
5.6.140.0000.04318.18
5.6.130.0070.08318.19
5.6.120.0000.09021.00
5.6.110.0070.08321.01
5.6.100.0130.07721.14
5.6.90.0030.06720.89
5.6.80.0070.03720.39
5.5.350.0370.07020.42
5.5.340.0070.08018.08
5.5.330.0100.04020.19
5.5.320.0100.04320.31
5.5.310.0130.05320.35
5.5.300.0100.06317.97
5.5.290.0070.08318.01
5.5.280.0070.04020.79
5.5.270.0030.07720.98
5.5.260.0030.04720.90
5.5.250.0070.08720.51
5.5.240.0100.08720.38
5.4.450.0900.05319.59
5.4.440.0700.05719.39
5.4.430.0570.05319.66
5.4.420.0800.05319.48
5.4.410.0030.05718.70
5.4.400.0370.04718.83
5.4.390.0370.05318.48
5.4.380.0070.05718.59
5.4.370.0130.03318.76
5.4.360.0100.04718.54
5.4.350.0070.04012.02
5.4.340.0060.04112.02
5.4.320.0060.03612.52
5.4.310.0050.03912.51
5.4.300.0040.03712.51
5.4.290.0100.03412.51
5.4.280.0090.03312.41
5.4.270.0050.03612.41
5.4.260.0050.03812.41
5.4.250.0040.03912.41
5.4.240.0040.03812.41
5.4.230.0070.03712.40
5.4.220.0060.03712.40
5.4.210.0060.03412.40
5.4.200.0050.03712.40
5.4.190.0080.03312.40
5.4.180.0030.03812.39
5.4.170.0060.03512.41
5.4.160.0080.03612.40
5.4.150.0050.03812.39
5.4.140.0070.03512.07
5.4.130.0080.03412.07
5.4.120.0090.04112.02
5.4.110.0060.03412.02
5.4.100.0030.03712.02
5.4.90.0040.03812.02
5.4.80.0080.03812.02
5.4.70.0060.03412.01
5.4.60.0040.03612.01
5.4.50.0060.03512.02
5.4.40.0060.03512.00
5.4.30.0050.03612.00
5.4.20.0050.03812.00
5.4.10.0070.04212.00
5.4.00.0060.03511.48
5.3.290.0060.04012.80
5.3.280.0070.03612.71
5.3.270.0040.04112.73
5.3.260.0040.04012.71
5.3.250.0080.03512.72
5.3.240.0060.03712.72
5.3.230.0040.04412.71
5.3.220.0020.03912.68
5.3.210.0040.03912.68
5.3.200.0070.03412.68
5.3.190.0050.03712.67
5.3.180.0070.03412.68
5.3.170.0050.03612.68
5.3.160.0050.03712.67
5.3.150.0120.04412.67
5.3.140.0040.04412.66
5.3.130.0060.03812.66
5.3.120.0040.04012.66
5.3.110.0090.03512.66
5.3.100.0030.03912.13
5.3.90.0080.03312.11
5.3.80.0070.03512.11
5.3.70.0030.03912.11
5.3.60.0050.03712.09
5.3.50.0070.03712.04
5.3.40.0040.04012.04
5.3.30.0050.03712.00
5.3.20.0060.03611.79
5.3.10.0070.03411.75
5.3.00.0060.03511.73
5.2.170.0040.0319.18
5.2.160.0060.0309.18
5.2.150.0080.0379.18
5.2.140.0050.0309.18
5.2.130.0040.0299.14
5.2.120.0060.0269.14
5.2.110.0030.0309.14
5.2.100.0070.0269.14
5.2.90.0050.0289.14
5.2.80.0040.0309.14
5.2.70.0070.0279.14
5.2.60.0020.0319.09
5.2.50.0050.0289.05
5.2.40.0030.0299.04
5.2.30.0070.0279.01
5.2.20.0040.0299.00
5.2.10.0010.0318.92
5.2.00.0020.0318.78
5.1.60.0020.0268.07
5.1.50.0050.0238.06
5.1.40.0070.0218.04
5.1.30.0030.0278.39
5.1.20.0050.0268.41
5.1.10.0040.0258.14
5.1.00.0060.0238.14
5.0.50.0020.0216.62
5.0.40.0030.0196.48
5.0.30.0050.0296.29
5.0.20.0040.0186.26
5.0.10.0060.0216.24
5.0.00.0030.0306.23
4.4.90.0040.0144.78
4.4.80.0030.0194.75
4.4.70.0050.0164.76
4.4.60.0050.0154.76
4.4.50.0040.0144.77
4.4.40.0020.0264.71
4.4.30.0020.0164.76
4.4.20.0020.0164.85
4.4.10.0040.0144.85
4.4.00.0030.0244.76
4.3.110.0020.0164.67
4.3.100.0040.0134.67
4.3.90.0020.0154.63
4.3.80.0010.0264.58
4.3.70.0030.0144.63
4.3.60.0030.0144.63
4.3.50.0060.0124.63
4.3.40.0030.0234.54
4.3.30.0010.0173.28
4.3.20.0040.0143.25
4.3.10.0010.0203.22
4.3.00.0130.0237.14

preferences:
40.14 ms | 401 KiB | 5 Q