3v4l.org

run code in 300+ PHP versions simultaneously
<?php class MapIterator implements Iterator { private $f; private $inner; public function __construct($f, $inner) { $this->f = $f; $this->inner = $inner; } function rewind() { return $this->inner->rewind(); } function current() { return call_user_func($this->f, $this->inner->current()); } function key() { return $this->inner->key(); } function next() { return $this->inner->next(); } function valid() { return $this->inner->valid(); } } function iter_map($f, $iter) { return new MapIterator($f, $iter); } // example: function times_two($x) { return $x * 2; } $source = new ArrayIterator([0, 1, 2, 3, 4, 5, 6]); print_r(iterator_to_array(iter_map('times_two', $source))); //print_r(iterator_to_array(gen_map('times_two', $source)));

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)
8.3.40.0000.01418.79
8.3.30.0080.00620.33
8.3.20.0080.00018.70
8.3.10.0040.00421.05
8.3.00.0050.00322.39
8.2.170.0070.00722.96
8.2.160.0120.00318.96
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0060.00326.16
8.2.120.0080.00020.78
8.2.110.0060.00320.36
8.2.100.0080.00317.77
8.2.90.0000.00818.97
8.2.80.0070.00019.28
8.2.70.0080.00017.63
8.2.60.0030.00617.93
8.2.50.0060.00318.07
8.2.40.0040.00418.27
8.2.30.0000.00719.46
8.2.20.0070.00017.68
8.2.10.0040.00417.81
8.2.00.0040.00417.67
8.1.270.0040.00423.99
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0040.00422.64
8.1.230.0060.00620.93
8.1.220.0040.00418.77
8.1.210.0080.00018.96
8.1.200.0000.00817.35
8.1.190.0040.00417.65
8.1.180.0050.00318.10
8.1.170.0090.00018.51
8.1.160.0040.00418.84
8.1.150.0000.00818.59
8.1.140.0040.00417.48
8.1.130.0030.00317.80
8.1.120.0080.00017.52
8.1.110.0080.00017.43
8.1.100.0040.00417.48
8.1.90.0000.00717.39
8.1.80.0040.00417.46
8.1.70.0070.00017.39
8.1.60.0000.01017.51
8.1.50.0000.00717.40
8.1.40.0040.00417.51
8.1.30.0040.00417.66
8.1.20.0040.00417.73
8.1.10.0040.00417.53
8.1.00.0040.00417.61
8.0.300.0040.00419.98
8.0.290.0040.00417.05
8.0.280.0050.00318.43
8.0.270.0070.00017.28
8.0.260.0000.00816.86
8.0.250.0030.00316.87
8.0.240.0060.00317.02
8.0.230.0090.00016.84
8.0.220.0030.00316.82
8.0.210.0000.00716.82
8.0.200.0030.00317.00
8.0.190.0040.00417.02
8.0.180.0060.00316.93
8.0.170.0070.00016.86
8.0.160.0030.00416.97
8.0.150.0000.00716.76
8.0.140.0000.00716.86
8.0.130.0070.00013.39
8.0.120.0000.00816.87
8.0.110.0030.00516.81
8.0.100.0050.00216.76
8.0.90.0030.00517.04
8.0.80.0070.01116.95
8.0.70.0080.00016.89
8.0.60.0070.00016.80
8.0.50.0000.00716.77
8.0.30.0110.00817.15
8.0.20.0130.00817.42
8.0.10.0040.00416.91
8.0.00.0050.01316.78
7.4.330.0050.00016.79
7.4.320.0000.00616.51
7.4.300.0030.00316.63
7.4.290.0050.00316.42
7.4.280.0070.00016.63
7.4.270.0000.00716.53
7.4.260.0030.00313.29
7.4.250.0080.00016.48
7.4.240.0030.00516.52
7.4.230.0040.00416.56
7.4.220.0030.01816.64
7.4.210.0040.01016.60
7.4.200.0000.00716.43
7.4.190.0000.00716.49
7.4.160.0100.00616.71
7.4.150.0060.01317.40
7.4.140.0090.01017.86
7.4.130.0120.00516.49
7.4.120.0090.00916.59
7.4.110.0060.01016.31
7.4.100.0190.00016.45
7.4.90.0170.00016.57
7.4.80.0100.01019.39
7.4.70.0050.01116.68
7.4.60.0070.01016.41
7.4.50.0030.00616.67
7.4.40.0030.01222.77
7.4.30.0090.00916.64
7.4.00.0030.01315.17
7.3.330.0000.00613.32
7.3.320.0000.00513.12
7.3.310.0040.00416.43
7.3.300.0030.00316.27
7.3.290.0070.01016.31
7.3.280.0050.01316.30
7.3.270.0070.01417.40
7.3.260.0080.01218.24
7.3.250.0090.00916.42
7.3.240.0110.00716.53
7.3.230.0130.00316.41
7.3.210.0100.01016.48
7.3.200.0070.01419.39
7.3.190.0080.00816.32
7.3.180.0130.00316.38
7.3.170.0110.00416.45
7.3.160.0100.00616.62
7.3.120.0000.01714.73
7.2.330.0090.00916.68
7.2.320.0070.01416.72
7.2.310.0080.01616.64
7.2.300.0060.01116.89
7.2.290.0090.00916.45
7.2.00.0060.00919.23
7.1.200.0060.00615.65
7.1.100.0060.00618.22
7.1.70.0090.00416.95
7.1.60.0060.01919.17
7.1.50.0130.01316.71
7.1.00.0030.03322.42
7.0.200.0050.00316.88
7.0.140.0000.07322.07
7.0.110.0700.05719.93
7.0.100.0770.07719.94
7.0.90.0800.06020.04
7.0.80.0830.08020.06
7.0.70.0670.07320.01
7.0.60.0700.07020.07
7.0.50.0770.08320.08
7.0.40.0070.08319.75
7.0.30.0130.06019.85
7.0.20.0200.07019.70
7.0.10.0170.07319.81
7.0.00.0070.08319.71
5.6.260.0000.07720.66
5.6.250.0070.07720.75
5.6.240.0000.07720.73
5.6.230.0070.06320.70
5.6.220.0100.07020.69
5.6.210.0070.05320.62
5.6.200.0100.06320.48
5.6.190.0100.07720.63
5.6.180.0230.06020.65
5.6.170.0170.07020.57
5.6.160.0070.08020.57
5.6.150.0030.08320.65
5.6.140.0200.06720.86
5.6.130.0130.07020.52
5.6.120.0030.07720.59
5.6.110.0100.08320.70
5.6.100.0030.09020.85
5.6.90.0070.08320.63
5.6.80.0030.08320.21
5.6.70.0030.08319.85
5.6.60.0070.06019.84
5.6.50.0130.07320.04
5.6.40.0170.06719.84
5.6.30.0100.07320.07
5.6.20.0100.07319.95
5.6.10.0100.07320.06
5.6.00.0030.08719.94
5.5.380.0100.07320.38
5.5.370.0030.08720.58
5.5.360.0070.03720.44
5.5.350.0200.06020.46
5.5.340.0100.08020.92
5.5.330.0070.05021.00
5.5.320.0100.08020.98
5.5.310.0200.07020.97
5.5.300.0130.07720.91
5.5.290.0030.09020.92
5.5.280.0230.03720.82
5.5.270.0130.07720.81
5.5.260.0070.08021.02
5.5.250.0170.07320.71
5.5.240.0030.07720.27
5.5.230.0070.08320.36
5.5.220.0130.07020.20
5.5.210.0100.07320.15
5.5.200.0100.05720.40
5.5.190.0070.08020.31
5.5.180.0100.04720.17
5.5.160.0030.07320.27
5.5.150.0030.07320.33
5.5.140.0030.07720.39
5.5.130.0200.06320.35
5.5.120.0030.04720.16
5.5.110.0070.07720.14
5.5.100.0000.08720.18
5.5.90.0070.06320.17
5.5.80.0070.08020.28
5.5.70.0030.08720.19
5.5.60.0030.08320.22
5.5.50.0200.03720.10
5.5.40.0130.07020.02
5.5.30.0070.08020.14
5.5.20.0070.08020.27
5.5.10.0070.09720.12
5.5.00.0130.06720.23
5.4.450.0070.06319.51
5.4.440.0030.08019.34
5.4.430.0100.07319.37
5.4.420.0070.07719.30
5.4.410.0030.08019.42
5.4.400.0130.07718.99
5.4.390.0070.08019.18
5.4.380.0100.07019.17
5.4.370.0070.07719.09
5.4.360.0170.03319.01
5.4.350.0070.04319.24
5.4.340.0100.08319.02
5.4.320.0100.07319.00
5.4.310.0070.07719.18
5.4.300.0170.05019.18
5.4.290.0100.04018.90
5.4.280.0030.05318.96
5.4.270.0070.05319.03
5.4.260.0070.06018.95
5.4.250.0100.07019.16
5.4.240.0130.06719.22
5.4.230.0130.06319.17
5.4.220.0100.07018.99
5.4.210.0030.08319.01
5.4.200.0030.07319.13
5.4.190.0030.08019.00
5.4.180.0070.06319.02
5.4.170.0100.07718.97
5.4.160.0030.07318.98
5.4.150.0000.08319.07
5.4.140.0100.07316.61
5.4.130.0130.07016.43
5.4.120.0000.08316.56
5.4.110.0100.06716.55
5.4.100.0000.05716.53
5.4.90.0070.06716.39
5.4.80.0170.06716.61
5.4.70.0030.08016.62
5.4.60.0070.05016.60
5.4.50.0100.07016.28
5.4.40.0070.08016.59
5.4.30.0100.07016.52
5.4.20.0130.06316.39
5.4.10.0070.03316.54
5.4.00.0100.07016.01
5.3.290.0030.07714.64
5.3.280.0100.07314.62
5.3.270.0100.07014.63
5.3.260.0030.05314.62
5.3.250.0000.07714.70
5.3.240.0100.07014.76
5.3.230.0070.07714.60
5.3.220.0200.03714.43
5.3.210.0030.07714.57
5.3.200.0000.07314.71
5.3.190.0070.07014.71
5.3.180.0100.07014.55
5.3.170.0070.08014.58
5.3.160.0030.08314.57
5.3.150.0100.07714.57
5.3.140.0070.04014.59
5.3.130.0170.05314.70
5.3.120.0000.04014.79
5.3.110.0100.07314.79
5.3.100.0030.06714.05
5.3.90.0030.04314.11
5.3.80.0100.03014.01
5.3.70.0100.05713.99
5.3.60.0100.03314.16
5.3.50.0030.03713.98
5.3.40.0030.03713.95
5.3.30.0000.04313.93
5.3.20.0130.05013.73
5.3.10.0000.03313.63
5.3.00.0030.07013.68
5.2.170.0000.03311.89
5.2.160.0030.02711.89
5.2.150.0000.03311.89
5.2.140.0070.02711.89
5.2.130.0000.03011.89
5.2.120.0070.02311.89
5.2.110.0030.05011.89
5.2.100.0030.06011.89
5.2.90.0070.03311.89
5.2.80.0000.03011.89
5.2.70.0030.02711.89
5.2.60.0000.05311.89
5.2.50.0000.03711.89
5.2.40.0130.04311.89
5.2.30.0030.05011.89
5.2.20.0000.03011.89
5.2.10.0000.03011.89
5.2.00.0030.02311.89
5.1.60.0000.03711.89
5.1.50.0070.04711.89
5.1.40.0070.05011.89
5.1.30.0030.05311.89
5.1.20.0000.03311.89
5.1.10.0030.05011.89
5.1.00.0030.05711.89
5.0.50.0030.01711.89
5.0.40.0030.01711.89
5.0.30.0000.05711.89
5.0.20.0000.02011.89
5.0.10.0070.01711.89
5.0.00.0070.05011.89
4.4.90.0070.03311.89
4.4.80.0030.02711.89
4.4.70.0000.02311.89
4.4.60.0030.01311.89
4.4.50.0000.01711.89
4.4.40.0030.04711.89
4.4.30.0000.03711.89
4.4.20.0070.03011.89
4.4.10.0000.02711.89
4.4.00.0000.04711.89
4.3.110.0000.02011.89
4.3.100.0000.02711.89
4.3.90.0000.01311.89
4.3.80.0030.03711.89
4.3.70.0000.01711.89
4.3.60.0030.02711.89
4.3.50.0000.02711.89
4.3.40.0070.01711.89
4.3.30.0000.02311.89
4.3.20.0030.03011.89
4.3.10.0030.02711.89
4.3.00.0030.03011.89

preferences:
57.22 ms | 400 KiB | 5 Q