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@ 2014-09-07T02:42:23Z

<?php

$iterations = 1000000;
$start = microtime();

for ($i=0; $i<$iterations; $i++) {
    $a = @$_GET['a'] ?: 'home';
}

echo round($start - microtime(), 5);

Output
Performance
VLD
References
Branches

microtime: documentation ( source)
round: documentation ( source)

preferences:dark modelive preview

35.86 ms | 402 KiB | 5 Q