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<?php class Collection extends ArrayObject { protected $iterator; public function getIterator() { // Well, this is a heavy object to make, let's memoize it if (!isset($this->iterator)) { $this->iterator = new ArrayIterator($this); } return $this->iterator; } public function __destruct() { unset($this->iterator); } } gc_enable(); foreach (range(1, 5000000) as $i) { $collection = new Collection([ 'foo', 'bar' ]); foreach ($collection as $item) { echo $item; } unset($collection); }
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of Collection::getIterator() should either be compatible with ArrayObject::getIterator(): Iterator, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/oufok on line 6 Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 134217736 bytes) in /in/oufok on line 22
Process exited with code 255.

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