<?php $array = array( 'foo' => 'bar', ); $timestamp = time(); for ($i=1;$i<10000;$i++) { if (array_keys($array)) {} } $timestamp = time()-$timestamp; var_dump($timestamp); for ($i=1;$i<10000;$i++) { if (!empty($array)) {} } $timestamp = time()-$timestamp; var_dump($timestamp);
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