Online PHP editor | refs for kqsP3

<?php $arr = ["6c","af","2a","7c","27","62","42","d0","2a","7b","9e","0b","fa","d9","cc","0e","10","fb","eb","a5","af","2f","d9","d5","d7","f4","b6"]; //////////////////////////////////////////////////////////////////// $time_start = microtime(true); foreach($arr as $lang) { echo "value_{$lang}"; } $time_end = microtime(true); $time1 = $time_end - $time_start; echo "Did nothing in $time1 seconds\n"; ///////////////////////////////////////////////////////////////////// $time_start = microtime(true); foreach($arr as $lang) { echo $lang; } $time_end = microtime(true); $time2 = $time_end - $time_start; echo "Did nothing in $time2 seconds\n"; echo $time1 <=> $time2; echo PHP_EOL . ($time1 - $time2); $o = $time1 - $time2; echo ($o/$time2*100) . '%';