<?php$flip = array('even' => 'odd', 'odd' => 'even');$class = 'even';$time_start = microtime(true);for ($number = 0; $number < 200000; $number++) { $class = ($number % 2 == 1) ? 'even': 'odd';}$time_end = microtime(true);$old_time = $time_end - $time_start;$time_start = microtime(true);for ($number = 0; $number < 200000; $number++) { $class = $flip[$class];}$time_end = microtime(true);$array_flip_time = $time_end - $time_start;$time_start = microtime(true);for ($number = 0; $number < 200000; $number++) { $class = $class == 'even' ? 'odd' : 'even';}$time_end = microtime(true);$tri_flip_time = $time_end - $time_start;echo "Old time is $old_time seconds\n";echo "Array flip time is $array_flip_time seconds\n";echo "Trinary flip time is $tri_flip_time seconds\n";?>/**Results://Old time is 2.94821381569 secondsArray flip time is 2.82611393929 secondsTrinary flip time is 3.10265183449 seconds//Old time is 2.9622759819 secondsArray flip time is 2.9366338253 secondsTrinary flip time is 3.28688883781 seconds//Old time is 3.1440680027 secondsArray flip time is 2.91075491905 secondsTrinary flip time is 3.05684518814 seconds//Old time is 3.09293603897 secondsArray flip time is 2.87835907936 secondsTrinary flip time is 3.03077507019 seconds//Old time is 3.16652011871 secondsArray flip time is 2.86847901344 secondsTrinary flip time is 3.02843999863 seconds*/