3v4l.org

run code in 300+ PHP versions simultaneously
<?php /** * Fibonacci number creator. * * @param int $grandparent * @param int $parent * @return int */ function f(int $grandparent, int $parent): int { return intval($parent + $grandparent); } /** * A classical fibonacci range builder. * * @param int $length * @return int[] */ function builder(int $length): array { $grandparent = 0; $parent = 1; $range = [$grandparent, $parent]; for ($i = 0; $i <= $length; $i++) { $child = f($grandparent, $parent); $grandparent = $parent; $parent = $child; $range[] = $child; } return $range; } /** * Generator for fibonacci numbers. * * @param int $length * * @yields int */ function generator(int $length) { $grandparent = 0; $parent = 1; for ($i = 0; $i <= $length; $i++) { yield $child = f($grandparent, $parent); $grandparent = $parent; $parent = $child; } } $maxNumIterations = 999999; for ($numIterations = 0; $numIterations < $maxNumIterations; $numIterations++) { gc_collect_cycles(); $builderUsage = 0; foreach (builder($numIterations) as $fibonacciNumber) { $currentUsage = memory_get_usage(false); if ($currentUsage > $builderUsage) { $builderUsage = $currentUsage; } } gc_collect_cycles(); $generatorUsage = 0; foreach (generator($numIterations) as $fibonacciNumber) { $currentUsage = memory_get_usage(false); if ($currentUsage > $generatorUsage) { $generatorUsage = $currentUsage; } } echo sprintf( "#%d\tBuilder: %.2f kb\tGenerator: %.2f kb\t%d", $numIterations, $builderUsage / 1024, $generatorUsage / 1024, $fibonacciNumber ) . PHP_EOL; if ($builderUsage > $generatorUsage) { echo sprintf( 'Found difference at iteration #%d and fibonacci number %d', $numIterations, $fibonacciNumber ) . PHP_EOL; break; } }

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)
7.3.10.0070.00716.38
7.3.00.0030.01016.61
7.2.130.0070.00716.94
7.2.120.0080.00717.07
7.2.110.0080.00516.96
7.2.100.0040.01017.00
7.2.90.0020.00916.92
7.2.80.0010.01116.83
7.2.70.0120.00216.78
7.2.60.0080.00616.98
7.2.50.0090.00616.85
7.2.40.0030.01116.87
7.2.30.0080.00316.95
7.2.20.0000.01316.89
7.2.10.0120.00516.80
7.2.00.0050.00917.71
7.1.250.0090.00415.83
7.1.240.0030.00615.77
7.1.230.0070.00415.75
7.1.220.0100.00315.67
7.1.210.0070.01115.60
7.1.200.0110.00415.84
7.1.190.0140.00715.86
7.1.180.0000.01115.53
7.1.170.0070.01015.95
7.1.160.0030.01315.71
7.1.150.0060.00915.70
7.1.140.0070.00715.76
7.1.130.0120.00415.82
7.1.120.0120.00615.69
7.1.110.0030.00915.64
7.1.100.0100.00315.54
7.1.90.0050.00915.88
7.1.80.0110.01115.84
7.1.70.0040.01016.31
7.1.60.0020.01116.47
7.1.50.0070.01516.23
7.1.40.0030.01415.46
7.1.30.0030.01015.44
7.1.20.0080.00415.75
7.1.10.0070.00715.68
7.1.00.0040.04919.00
7.0.330.0040.01515.54
7.0.320.0030.01015.12
7.0.310.0130.00715.42
7.0.300.0030.01115.29
7.0.290.0070.01115.41
7.0.280.0100.01415.58
7.0.270.0110.00815.12
7.0.260.0110.00815.20
7.0.250.0110.01115.38
7.0.240.0130.00615.46
7.0.230.0070.01015.30
7.0.220.0070.01615.30
7.0.210.0040.01315.36
7.0.200.0080.01216.08
7.0.190.0000.01315.35
7.0.180.0000.01815.36
7.0.170.0070.00715.26
7.0.160.0060.01415.19
7.0.150.0070.01115.11
7.0.140.0060.01215.37
7.0.130.0030.01715.08
7.0.120.0050.04018.65
7.0.110.0070.03918.74
7.0.100.0060.04218.63
7.0.90.0100.04118.70
7.0.80.0050.04418.77
7.0.70.0040.03518.63
7.0.60.0060.03918.66
7.0.50.0030.04318.77
7.0.40.0060.04117.68
7.0.30.0060.04217.90
7.0.20.0080.03617.82
7.0.10.0080.03717.77
7.0.00.0050.04317.70
5.6.380.0100.00014.13
5.6.370.0060.00914.37
5.6.360.0090.00614.35
5.6.350.0110.00614.22
5.6.340.0050.00713.91
5.6.330.0120.00314.21
5.6.320.0060.00613.95
5.6.310.0080.00813.81
5.6.300.0030.01014.18
5.6.290.0140.00014.02
5.6.280.0050.01114.14
5.6.270.0000.00914.08
5.6.260.0050.03817.45
5.6.250.0080.03517.62
5.6.240.0090.03617.67
5.6.230.0060.04117.46
5.6.220.0030.04117.61
5.6.210.0000.04617.55
5.6.200.0070.04117.44
5.6.190.0080.04017.50
5.6.180.0070.04017.51
5.6.170.0070.03817.50
5.6.160.0050.03817.57
5.6.150.0060.04017.28
5.6.140.0020.04617.58
5.6.130.0000.04117.46
5.6.120.0050.04217.56
5.6.110.0030.03717.44
5.6.100.0060.03817.42
5.6.90.0070.03817.46
5.6.80.0030.04017.19
5.6.70.0030.04017.22
5.6.60.0100.03217.11
5.6.50.0050.03817.14
5.6.40.0050.03717.23
5.6.30.0070.04017.11
5.6.20.0060.03917.30
5.6.10.0020.04217.04
5.6.00.0080.03317.13
5.5.380.0040.03714.37
5.5.370.0040.03314.38
5.5.360.0040.03114.34
5.5.350.0030.03314.38
5.5.340.0070.03714.65
5.5.330.0070.03214.70
5.5.320.0040.03914.55
5.5.310.0040.03914.54
5.5.300.0070.03714.65
5.5.290.0020.04214.62
5.5.280.0050.03914.54
5.5.270.0080.03514.62
5.5.260.0030.04114.62
5.5.250.0020.04114.47
5.5.240.0070.02814.32
5.5.230.0050.03514.30
5.5.220.0020.04114.24
5.5.210.0020.03814.33
5.5.200.0030.03014.24
5.5.190.0050.03514.38
5.5.180.0030.03514.23
5.5.170.0030.00911.18
5.5.160.0030.03714.24
5.5.150.0070.03014.22
5.5.140.0000.04114.29
5.5.130.0030.03814.33
5.5.120.0020.03914.31
5.5.110.0050.03714.22
5.5.100.0060.03714.33
5.5.90.0030.03314.13
5.5.80.0050.03514.19
5.5.70.0050.03514.27
5.5.60.0030.03614.17
5.5.50.0060.03314.27
5.5.40.0030.03814.25
5.5.30.0020.03614.17
5.5.20.0100.03214.32
5.5.10.0040.03714.31
5.5.00.0070.03514.33
5.4.450.0050.04115.22
5.4.440.0000.04415.40
5.4.430.0050.03615.23
5.4.420.0060.03415.41
5.4.410.0060.03615.18
5.4.400.0030.03315.09
5.4.390.0050.03715.09
5.4.380.0060.03515.17
5.4.370.0040.02915.18
5.4.360.0070.03515.08
5.4.350.0050.03315.09
5.4.340.0030.03415.08
5.4.330.0030.00311.18
5.4.320.0050.03715.08
5.4.310.0030.03815.13
5.4.300.0020.04115.24
5.4.290.0100.02815.10
5.4.280.0030.03815.09
5.4.270.0020.03715.20
5.4.260.0090.03215.07
5.4.250.0030.03715.09
5.4.240.0000.03615.25
5.4.230.0020.03315.19
5.4.220.0070.03515.25
5.4.210.0030.03515.15
5.4.200.0050.03615.21
5.4.190.0100.02715.08
5.4.180.0060.03215.25
5.4.170.0070.03515.19
5.4.160.0070.03315.08
5.4.150.0070.03815.24
5.4.140.0080.03213.82
5.4.130.0030.03613.85
5.4.120.0010.03813.86
5.4.110.0060.03313.76
5.4.100.0030.03513.76
5.4.90.0020.03413.76
5.4.80.0050.03413.90
5.4.70.0030.03513.78
5.4.60.0020.03513.75
5.4.50.0030.03513.72
5.4.40.0020.03213.78
5.4.30.0040.03413.82
5.4.20.0040.03213.83
5.4.10.0030.03613.75
5.4.00.0080.03013.55
5.3.290.0030.03712.93
5.3.280.0020.03812.96
5.3.270.0060.03212.89
5.3.260.0030.03612.90
5.3.250.0020.03712.96
5.3.240.0040.03712.82
5.3.230.0040.03712.89
5.3.220.0070.03312.89
5.3.210.0080.03312.88
5.3.200.0020.03812.94
5.3.190.0020.03712.88
5.3.180.0030.03812.85
5.3.170.0030.03712.93
5.3.160.0040.03512.87
5.3.150.0040.03512.79
5.3.140.0000.03812.87
5.3.130.0000.03812.93
5.3.120.0020.03812.86
5.3.110.0030.03912.91
5.3.100.0020.04012.67
5.3.90.0070.03312.71
5.3.80.0060.03612.60
5.3.70.0020.03912.60
5.3.60.0080.03312.59
5.3.50.0020.04012.56
5.3.40.0070.03512.55
5.3.30.0070.03512.57
5.3.20.0120.02912.43
5.3.10.0030.03412.46
5.3.00.0040.03412.44
5.2.170.0050.03211.89
5.2.160.0070.02711.89
5.2.150.0050.03111.89
5.2.140.0060.03211.89
5.2.130.0040.02811.89
5.2.120.0050.02711.89
5.2.110.0020.02911.89
5.2.100.0030.03011.89
5.2.90.0040.02911.89
5.2.80.0050.02711.89
5.2.70.0030.03111.89
5.2.60.0020.03211.89
5.2.50.0030.03011.89
5.2.40.0050.02811.89
5.2.30.0050.03011.89
5.2.20.0050.02811.89
5.2.10.0070.02511.89
5.2.00.0030.02711.89
5.1.60.0030.02611.89
5.1.50.0000.02911.89
5.1.40.0020.02611.89
5.1.30.0030.02911.89
5.1.20.0060.02611.89
5.1.10.0030.02511.89
5.1.00.0050.02511.89
5.0.50.0020.02311.89
5.0.40.0020.02011.89
5.0.30.0010.03311.89
5.0.20.0050.01911.89
5.0.10.0070.01711.89
5.0.00.0040.02611.89
4.4.90.0010.01611.89
4.4.80.0050.01511.89
4.4.70.0030.01511.89
4.4.60.0020.01711.89
4.4.50.0040.01411.89
4.4.40.0000.02711.89
4.4.30.0030.01511.89
4.4.20.0020.01811.89
4.4.10.0040.01511.89
4.4.00.0000.02711.89
4.3.110.0060.01311.89
4.3.100.0010.01511.89
4.3.90.0040.01311.89
4.3.80.0040.02311.89
4.3.70.0020.01711.89
4.3.60.0000.01811.89
4.3.50.0030.01511.89
4.3.40.0030.02511.89
4.3.30.0030.01711.89
4.3.20.0020.01811.89
4.3.10.0070.01311.89
4.3.00.0020.01811.89

preferences:
62.65 ms | 403 KiB | 5 Q