3v4l.org

run code in 300+ PHP versions simultaneously
<?php class IteratorWithFilter { public $generator; public function __construct(array $data) { $this->generator = new \ArrayIterator($data); } public function filter(Closure $closure) { $closure = clone $closure; $closure = $closure->bindTo($this); $this->generator = new \CallbackFilterIterator($this->generator, static function () {}); $this->generator->cl = $closure; // this assignment prevents GC as well return $this; } } function createIterator(Closure $closure) { $iter = new IteratorWithFilter([['a'], ['b']]); return $iter->filter($closure); } function createClosure() { return function ($row) { return true; }; } $closure = createClosure(); for ($i = 0; $i < 50 * 1000; $i++) { createIterator($closure); if (($i % 1000) === 0) { // gc_collect_cycles(); // explicit GC does not help... echo round(memory_get_usage() / (1024 * 1024), 3) . " MiB\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)
7.4.100.0270.38228.51
7.4.90.0230.28628.45
7.4.80.0200.32928.92
7.4.70.0190.26128.82
7.4.60.0200.31428.61
7.4.50.0230.38028.52
7.4.40.0270.27028.64
7.4.30.0290.41028.43
7.4.20.0160.47328.55
7.4.10.0360.46628.88
7.4.00.0160.34628.99
7.3.220.0160.30921.27
7.3.210.0130.21621.33
7.3.200.0160.29221.55
7.3.190.0100.23021.59
7.3.180.0160.26021.29
7.3.170.0130.27721.58
7.3.160.0230.18821.41
7.3.150.0060.30921.41
7.3.140.0130.37021.60
7.3.130.0160.22621.39
7.3.120.0300.35121.38
7.3.110.0160.33821.56
7.3.100.0260.33721.28
7.3.90.0230.29321.65
7.3.80.0230.27121.38
7.3.70.0170.23221.37
7.3.60.0130.26321.29
7.3.50.0290.24221.30
7.3.40.0100.23521.23
7.3.30.0160.25421.46
7.3.20.0230.28021.55
7.3.10.0100.31121.51
7.3.00.0130.25921.31
7.2.330.0100.25821.71
7.2.320.0190.28221.58
7.2.310.0100.29921.82
7.2.300.0200.27521.73
7.2.290.0200.39021.76
7.2.280.0190.29021.56
7.2.270.0230.27621.85
7.2.260.0200.22221.98
7.2.250.0230.38221.90
7.2.240.0100.38021.90
7.2.230.0190.28121.64
7.2.220.0090.31321.96
7.2.210.0130.28021.75
7.2.200.0130.26621.74
7.2.190.0260.25921.93
7.2.180.0070.26321.84
7.2.170.0160.29821.71
7.2.160.0330.41421.93
7.2.150.0230.25321.82
7.2.140.0160.28421.85
7.2.130.0100.22621.96
7.2.120.0260.24221.69
7.2.110.0270.27221.94
7.2.100.0330.26421.91
7.2.90.0200.28921.67
7.2.80.0160.31321.69
7.2.70.0100.28921.81
7.2.60.0100.30621.79
7.2.50.0160.40421.91
7.2.40.0100.26421.93
7.2.30.0230.25121.97
7.2.20.0130.26321.77
7.2.10.0130.23722.06
7.2.00.0140.25121.77

preferences:
30.35 ms | 401 KiB | 5 Q