- memory_get_usage: documentation ( source)
<?php
class Foo extends ArrayObject {}
echo memory_get_usage(), "\n";
for ($i = 0; $i < 1000; $i++ ) {
$obj = new Foo();
$obj['foo'] = 'bar';
unset($obj);
if ($i % 10) {
echo memory_get_usage(), "\n";
}
}