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PHP MCQs

Which is the correct way to profile a PHP function (without relying on 3rd party libraries and/or PHP extensions)?

$start = microtime(); functionToProfile(); $end = microtime(); $duration = $end - start;

$start = time(); functionToProfile(); $end = time(); $duration = $end - start;

$start = microtime(true); functionToProfile(); $end = microtime(true); $duration = $end - start;

$start = date('U'); functionToProfile(); $end = date('U'); $duration = $end - start;

Answer

Correct Answer: $start = microtime(); functionToProfile(); $end = microtime(); $duration = $end - start;

Explanation:

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