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@ 2013-10-06T16:08:24Z

<?php

$val = 0;

for ($i = 1; $i <= 1000000000000; $i++) {
    $val += $i;
}

echo '<p>' . $val . '</p>';
echo memory_get_usage() . "\n";

Output
Performance
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References
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memory_get_usage: documentation ( source)

preferences:dark modelive preview

31.52 ms | 402 KiB | 5 Q