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run code in 300+ PHP versions simultaneously
<?php echo memory_get_usage(), "\n"; for ($i = 0; $i < 1000; $i++ ) { $obj = new ArrayObject(); $obj['foo'] = 'bar'; unset($obj); if ($i % 10) { echo memory_get_usage(), "\n"; } }

preferences:
23.29 ms | 402 KiB | 5 Q