Online PHP editor | refs for BCI0F

<?php class A { protected $_iterator; protected $_appendIterator; public function __construct($appendIterator = true) { $this->_appendIterator = $appendIterator; $arrayIterator= new ArrayIterator([$this, $this, $this, $this]); if ($appendIterator) { $this->_iterator = new AppendIterator(); $this->_iterator->append($arrayIterator); } else { $this->_iterator = $arrayIterator; } } public function __destruct() { echo 'destructing A::class(' . var_export($this->_appendIterator, true) .') ' . PHP_EOL; } } echo "Running with AppendIterator(): " . PHP_EOL; $mStart = memory_get_usage(); for ($i = 0; $i < 10; $i++) new A(); echo memory_get_usage() - $mStart . " memory increase " . PHP_EOL; echo "Running GC.." . PHP_EOL; echo "Found " . gc_collect_cycles() . " cycles..." . PHP_EOL . PHP_EOL; echo "Running without AppendIterator(): " . PHP_EOL; $mStart = memory_get_usage(); for ($i = 0; $i < 10; $i++) new A(false); echo memory_get_usage() - $mStart . " memory increase " . PHP_EOL; echo "Running GC.." . PHP_EOL; echo "Found " . gc_collect_cycles() . " cycles..." . PHP_EOL; echo "Done!" . PHP_EOL . PHP_EOL;