php页面运行时间记录

/** * 记录程序程序时间---只能记录连续的调用该函数 * @param$time_key记录的key，多次执行可以指定同一个key * @returnnone没有返回值，直接获取全局变量$time_arr，如果是在方法中调用需要先global一次 **/function showExecuTime($time_key = '') {global $time_arr,$time_start,$time_end,$time_num;$time_now = microtime(true);if ( !$time_num ) {$time_num = 0;}$time_num++;if ( $time_num%2 == 1 ) {$time_start = $time_now;} else {$time_end = $time_now;}if ( $time_num %2 == 0 && $time_start && $time_end ) {$time = $time_end - $time_start;if ( $time_key ) {$time_arr[$time_key] += $time;} else {$time_arr[] = $time;}$time_arr['total'] += $time;}}/** * 记录程序程序时间---可以多次交叉的调用 * @param$time_key记录的key，多次执行可以指定同一个key * @returnnone没有返回值，直接获取全局变量$time_arr，如果是在方法中调用需要先global一次 **/function showExecuTime($time_key = '') {global $time_arr,$time_key_arr,$time_num;$time_now = microtime(true);if ( !$time_key ) {if ( !$time_num ) {$time_num = 0;}$time_num++;$time_key = floor(($time_num+1)/2) - 1;}// 记录本次是开始时间还是结束时间if ( !isset($time_key_arr[$time_key])) {$time_key_arr[$time_key]['num'] = 0;}$time_key_arr[$time_key]['num']++;if ( $time_key_arr[$time_key]['num']%2 == 1 ) {$time_key_arr[$time_key]['time_start'] = $time_now;} else {$time_key_arr[$time_key]['time_end'] = $time_now;}// 如果连续记录2次，计算结果if ( $time_key_arr[$time_key]['num'] %2 == 0 && $time_key_arr[$time_key]['time_start'] && $time_key_arr[$time_key]['time_end'] ) {$time = $time_key_arr[$time_key]['time_end'] - $time_key_arr[$time_key]['time_start'];$time_arr[$time_key] += $time;$time_arr['total'] += $time;}}showExecuTime('all');showExecuTime();sleep(1);showExecuTime('all');//////sleep(1);showExecuTime();sleep(1);showExecuTime();sleep(1);showExecuTime();showExecuTime('a');sleep(1);showExecuTime('a');// showExecuTime('all');//////print_r($time_arr);