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@ 2014-10-13T15:53:42Z

<?php

for($i=0; $i < 10000; ++$i) {
    $reader = new XMLReader();
    $reader->xml('');
    while ($reader->read()) {
        $reader->expand();
    }

    echo memory_get_peak_usage(true) . PHP_EOL;
}

Output
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memory_get_peak_usage: documentation ( source)

preferences:dark modelive preview

34.57 ms | 402 KiB | 5 Q