3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?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; } } gc_enable(); foreach (range(1, 5000000) as $i) { $collection = new Collection([ 'foo', 'bar' ]); foreach ($collection as $item) { echo memory_get_usage() . "\n"; } unset($collection); } echo "done\n";
Output for 7.0.0 - 7.1.0
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 268435464 bytes) in /in/1Y0tj on line 18
Process exited with code 255.
Output for 5.4.0 - 5.6.28
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 32 bytes) in /in/1Y0tj on line 18
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/1Y0tj on line 20
Process exited with code 255.