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 $memoFib(0) . PHP_EOL; echo $memoFib(1) . 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)
8.3.60.0790.01380.00
8.3.50.0660.03881.11
8.3.40.0380.01348.56
8.3.30.0270.02148.79
8.3.20.0130.01649.91
8.3.10.0100.01051.57
8.3.00.0170.01047.21
8.2.180.1020.05080.04
8.2.170.0490.00748.43
8.2.160.0300.02049.82
8.2.150.0200.00748.72
8.2.140.0220.00648.66
8.2.130.0160.00950.05
8.2.120.0060.00948.70
8.2.110.0220.00449.95
8.2.100.0380.00747.26
8.2.90.0220.00648.84
8.2.80.0100.01747.25
8.2.70.0140.01846.88
8.2.60.0120.01547.30
8.2.50.0240.01647.13
8.2.40.0110.01547.85
8.2.30.0090.02847.63
8.2.20.0080.01947.17
8.2.10.0160.01047.44
8.2.00.0180.00747.16
8.1.280.0800.01781.32
8.1.270.0100.01751.52
8.1.260.0170.01049.84
8.1.250.0200.00751.51
8.1.240.0160.00851.74
8.1.230.0250.01648.67
8.1.220.0070.01847.04
8.1.210.0150.01146.86
8.1.200.0310.00046.72
8.1.190.0100.01746.86
8.1.180.0100.01746.73
8.1.170.0090.02147.93
8.1.160.0160.01051.34
8.1.150.0030.02248.12
8.1.140.0140.01046.75
8.1.130.0140.01047.09
8.1.120.0130.01046.81
8.1.110.0200.00346.68
8.1.100.0170.00746.70
8.1.90.0160.01646.82
8.1.80.0150.00846.73
8.1.70.0100.01646.78
8.1.60.0100.01646.96
8.1.50.0180.00746.90
8.1.40.0230.00346.84
8.1.30.0060.01946.93
8.1.20.0140.01046.96
8.1.10.0180.02581.07
8.1.00.0130.03080.90
8.0.300.0200.02480.52
8.0.290.0260.01980.13
8.0.280.0290.02281.86
8.0.270.0240.02080.63
8.0.260.0210.02180.54
8.0.250.0240.01780.38
8.0.240.0330.01080.14
8.0.230.0200.02380.33
8.0.220.0170.02480.32
8.0.210.0230.02080.18
8.0.200.0220.02280.25
8.0.190.0230.02380.32
8.0.180.0270.02080.31
8.0.170.0260.01680.36
8.0.160.0270.01780.38
8.0.150.0300.01380.24
8.0.140.0200.02480.12
8.0.130.0530.033136.81
8.0.120.0290.02080.21
8.0.110.0190.02580.19
8.0.100.0280.01780.15
8.0.90.0170.02480.10
8.0.80.0510.05280.23
8.0.70.0100.03180.14
8.0.60.0300.01380.23
8.0.50.0230.01780.25
8.0.30.0760.04580.47
8.0.20.0610.05980.39
8.0.10.0270.01780.34
8.0.00.0710.05580.22
7.4.330.0130.02376.91
7.4.320.0340.00779.78
7.4.300.0290.01379.81
7.4.290.0270.01579.89
7.4.280.0100.03479.90
7.4.270.0200.02479.86
7.4.260.0290.01379.92
7.4.250.0320.01379.83
7.4.240.0230.02079.82
7.4.230.0240.01779.94
7.4.220.0730.09779.79
7.4.210.0570.03479.84
7.4.200.0230.02080.00
7.4.160.0610.03979.87
7.4.150.0560.05679.99
7.4.140.0640.05279.83
7.4.130.0580.05579.89
7.4.120.0620.04679.87
7.4.110.0660.05279.96
7.4.100.0330.07679.94
7.4.90.0790.05579.89
7.4.80.0710.04779.86
7.4.70.0590.05279.90
7.4.60.0610.05879.92
7.4.50.0230.02980.04
7.4.40.0520.05979.83
7.4.30.0490.05979.70
7.4.00.0360.03678.25
7.3.330.0400.043135.84
7.3.320.0490.029135.97
7.3.310.0200.02479.13
7.3.300.0330.01079.21
7.3.290.0620.04379.22
7.3.280.0570.06079.27
7.3.270.0790.05379.43
7.3.260.0670.04879.21
7.3.250.0630.05279.41
7.3.240.0540.05179.20
7.3.230.0590.05979.24
7.3.210.0620.05279.28
7.3.200.0830.03379.57
7.3.190.0650.04679.32
7.3.180.0480.06179.43
7.3.170.0490.06679.18
7.3.160.0500.06379.18
7.3.120.0470.04877.88
7.3.110.0480.04677.91
7.3.100.0450.04077.92
7.3.90.0260.04177.84
7.3.80.0520.03677.96
7.3.70.0370.04677.73
7.3.60.0250.03477.90
7.3.50.0440.03477.89
7.3.40.0370.04177.82
7.3.30.0370.02477.86
7.3.20.0170.03278.72
7.3.10.0330.02678.52
7.3.00.0280.01878.64
7.2.330.0560.07079.55
7.2.320.0590.06879.37
7.2.310.0430.07979.39
7.2.300.0690.07279.52
7.2.290.0550.06579.77
7.2.250.0460.03978.14
7.2.240.0450.05577.82
7.2.230.0310.04377.78
7.2.220.0360.03677.86
7.2.210.0390.04678.02
7.2.200.0320.03477.96
7.2.190.0430.04677.80
7.2.180.0330.06178.05
7.2.170.0300.04778.05
7.2.160.0310.03877.99
7.2.150.0270.02079.03
7.2.140.0260.04378.83
7.2.130.0200.04378.64
7.2.120.0160.03978.99
7.2.110.0410.02078.85
7.2.100.0140.04478.95
7.2.90.0230.02978.89
7.2.80.0320.03278.74
7.2.70.0300.03979.01
7.2.60.1830.02078.39
7.2.50.0210.03878.89
7.2.40.0410.03178.79
7.2.30.0330.03078.59
7.2.20.0310.03578.32
7.2.10.0380.03878.98
7.2.00.1140.02479.91
7.1.330.0490.03777.87
7.1.320.0320.04877.67
7.1.310.0390.04177.84
7.1.300.0330.04377.71
7.1.290.0350.05377.76
7.1.280.0280.04377.51
7.1.270.0290.04277.69
7.1.260.0430.04677.76
7.1.250.0270.04477.47
7.1.240.0200.05377.73
7.1.230.0300.04377.57
7.1.220.0330.04777.78
7.1.210.0370.04177.57
7.1.200.1720.02877.60
7.1.190.0230.05577.71
7.1.180.0350.03877.59
7.1.170.0490.03877.64
7.1.160.0270.05477.46
7.1.150.0200.06777.51
7.1.140.0710.02777.69
7.1.130.0420.03177.37
7.1.120.0470.03477.53
7.1.110.0380.05177.71
7.1.100.0440.03878.71
7.1.90.0470.04777.96
7.1.80.0410.04977.84
7.1.70.1360.03578.37
7.1.60.0310.05178.47
7.1.50.0710.04078.52
7.1.40.0530.03577.29
7.1.30.0530.05077.48
7.1.20.0330.04877.82
7.1.10.0470.05777.90
7.1.00.0240.07280.74
7.0.330.0170.05677.67
7.0.320.0170.04677.61
7.0.310.0290.03977.50
7.0.300.0170.04577.14
7.0.290.0200.04776.99
7.0.280.0200.04477.05
7.0.270.0320.04577.32
7.0.260.0200.05677.09
7.0.250.0130.05076.94
7.0.240.0160.04677.13
7.0.230.0100.04876.81
7.0.220.0200.04477.25
7.0.210.0190.04577.37
7.0.200.2130.03377.55
7.0.190.0240.04777.04
7.0.180.0340.03477.20
7.0.170.0230.04677.21
7.0.160.0170.05677.19
7.0.150.0280.04176.91
7.0.140.0150.07980.42
7.0.130.0310.03876.94
7.0.120.0270.04177.05
7.0.110.0070.05777.20
7.0.100.0190.04876.72
7.0.90.0160.05277.37
7.0.80.0610.05177.38
7.0.70.0200.05577.01
7.0.60.0200.07880.24
7.0.50.0280.05479.42
7.0.40.0120.06916.39
7.0.30.0250.05916.43
7.0.20.0100.07216.65
7.0.10.0220.06716.66
7.0.00.0180.07716.64
5.6.400.0210.02748.85
5.6.390.0200.04448.56
5.6.380.0240.02848.71
5.6.370.0230.03048.82
5.6.360.0120.03948.24
5.6.350.0290.02048.09
5.6.340.0330.03648.33
5.6.330.0280.04148.30
5.6.320.0460.02348.45
5.6.310.0260.03948.01
5.6.300.0340.02748.60
5.6.290.0190.04248.16
5.6.280.0200.06351.53
5.6.270.0230.04348.20
5.6.260.0330.03048.25
5.6.250.0140.04548.23
5.6.240.0240.03748.08
5.6.230.0420.01948.23
5.6.220.0210.03347.94
5.6.210.0100.07951.29
5.6.200.0210.06050.07
5.6.190.0270.04451.36
5.6.180.0240.04751.31
5.6.170.0310.06751.30
5.6.160.0170.04851.27
5.6.150.0110.05050.17
5.6.140.0290.06350.13
5.6.130.0350.05850.18
5.6.120.0250.05651.91
5.6.110.0250.06451.58
5.6.100.0260.06251.58
5.6.90.0260.06551.76
5.6.80.0220.06751.16
5.6.70.0210.03551.33
5.6.60.0170.04548.07
5.6.50.0170.03148.05
5.6.40.0260.02647.77
5.6.30.0360.02948.29
5.6.20.0200.03748.05
5.6.10.0230.03747.92
5.6.00.0190.04248.44
5.5.380.0240.03849.62
5.5.370.0170.05150.30
5.5.360.0340.03449.83
5.5.350.0240.05252.99
5.5.340.0270.04751.65
5.5.330.0280.05052.88
5.5.320.0180.07052.71
5.5.310.0310.05752.76
5.5.300.0200.05651.91
5.5.290.0170.04851.73
5.5.280.0210.07353.09
5.5.270.0240.06953.11
5.5.260.0220.05353.30
5.5.250.0330.06053.12
5.5.240.0230.07452.78
5.5.230.0220.05050.03
5.5.220.0270.03849.50
5.5.210.0260.03049.70
5.5.200.0340.02949.72
5.5.190.0200.04349.75
5.5.180.0330.02549.45
5.5.170.0320.02949.71
5.5.160.0370.02850.07
5.5.150.0400.02350.06
5.5.140.0240.03650.05
5.5.130.0260.04049.70
5.5.120.0200.04249.77
5.5.110.0270.03849.72
5.5.100.0320.03849.58
5.5.90.0290.02950.00
5.5.80.0300.03649.75
5.5.70.0280.04049.18
5.5.60.0240.03849.20
5.5.50.0260.03549.88
5.5.40.0250.03549.72
5.5.30.0200.04549.78
5.5.20.0240.04050.04
5.5.10.0380.03449.61
5.5.00.0230.04849.97
5.4.450.0190.04952.20
5.4.440.0240.05852.04
5.4.430.0270.04452.25
5.4.420.0400.05952.15
5.4.410.0310.06151.95
5.4.400.0330.04052.02
5.4.390.0310.04351.90
5.4.380.0350.06051.96
5.4.370.0290.03951.92
5.4.360.0270.05051.86
5.4.350.0330.06151.97
5.4.340.0300.04651.82
5.4.330.0310.02446.64
5.4.320.0340.05551.80
5.4.310.0270.05252.01
5.4.300.0240.06951.81
5.4.290.0300.06352.06
5.4.280.0240.07351.96
5.4.270.0220.04951.92
5.4.260.0360.04051.78
5.4.250.0200.06951.84
5.4.240.0260.06651.75
5.4.230.0220.07151.89
5.4.220.0270.05051.84
5.4.210.0270.06151.84
5.4.200.0300.05952.11
5.4.190.0390.04451.79
5.4.180.0250.05051.81
5.4.170.0310.05952.11
5.4.160.0240.04151.94
5.4.150.0330.04752.13
5.4.140.0240.06850.47
5.4.130.0300.06249.62
5.4.120.0220.04549.66
5.4.110.0260.04050.15
5.4.100.0240.04750.24
5.4.90.0220.05250.33
5.4.80.0250.04250.38
5.4.70.0350.05950.30
5.4.60.0280.06250.43
5.4.50.0270.04450.40
5.4.40.0390.05350.34
5.4.30.0320.04250.33
5.4.20.0190.05650.34
5.4.10.0320.04850.39
5.4.00.0340.06149.35
5.3.290.0400.04753.94
5.3.280.0130.05751.22
5.3.270.0270.06351.25
5.3.260.0370.07051.33
5.3.250.0600.04051.32
5.3.240.0370.08751.36
5.3.230.0300.05351.31
5.3.220.0330.09051.24
5.3.210.0270.09351.31
5.3.200.0300.09051.30
5.3.190.0300.05751.41
5.3.180.0170.06751.18
5.3.170.0300.09051.21
5.3.160.0330.09351.34
5.3.150.0330.09351.29
5.3.140.0330.06351.07
5.3.130.0470.10051.13
5.3.120.0270.09751.09
5.3.110.0400.06751.28
5.3.100.0270.08350.77
5.3.90.0200.10751.41
5.3.80.0230.04750.21
5.3.70.0300.08749.95
5.3.60.0270.09349.97
5.3.50.0270.10049.93
5.3.40.0330.08350.16
5.3.30.0400.08349.85
5.3.20.0270.05349.76
5.3.10.0270.08749.58
5.3.00.0330.07750.92
5.2.170.0130.04311.88
5.2.160.0070.03311.88
5.2.150.0200.06011.88
5.2.140.0070.03711.88
5.2.130.0100.04011.88
5.2.120.0170.03711.88
5.2.110.0170.05011.88
5.2.100.0100.07011.88
5.2.90.0200.06011.88
5.2.80.0230.05011.88
5.2.70.0100.05011.88
5.2.60.0230.05311.88
5.2.50.0200.04711.88
5.2.40.0170.03711.88
5.2.30.0100.03311.88
5.2.20.0130.04311.88
5.2.10.0130.06011.88
5.2.00.0170.05311.88
5.1.60.0130.05311.88
5.1.50.0130.03711.88
5.1.40.0070.04011.88
5.1.30.0170.02711.88
5.1.20.0100.02311.88
5.1.10.0170.04011.88
5.1.00.0230.03711.88
5.0.50.0070.02311.88
5.0.40.0100.02311.88
5.0.30.0100.06311.88
5.0.20.0130.03711.88
5.0.10.0200.01711.88
5.0.00.0100.06311.88
4.4.90.0030.02011.88
4.4.80.0070.03311.88
4.4.70.0100.01011.88
4.4.60.0070.03711.88
4.4.50.0100.03011.88
4.4.40.0070.05011.88
4.4.30.0070.03711.88
4.4.20.0100.03311.88
4.4.10.0070.02311.88
4.4.00.0170.02011.88
4.3.110.0030.02011.88
4.3.100.0130.02711.88
4.3.90.0070.02311.88
4.3.80.0170.02711.88
4.3.70.0030.02011.88
4.3.60.0100.02311.88
4.3.50.0030.04011.88
4.3.40.0070.04011.88
4.3.30.0100.03011.88
4.3.20.0100.02711.88
4.3.10.0070.03311.88
4.3.00.0070.03711.88

preferences:
76.01 ms | 400 KiB | 5 Q