<?php/** * 測試pdo和mysqli的連接效率，各連接100次mysql數據庫 */header("Content-type:text/html;charset=utf8");//通過pdo鏈接數據庫$pdo_startTime = microtime(true);for($i=1;$i<=100;$i++){ $pdo = new PDO("mysql:host=localhost;dbname=test","root","1234");}$pdo_endTime = microtime(true);$pdo_time = $pdo_endTime - $pdo_startTime;echo $pdo_time;echo "<hr/>";//通過mysql鏈接數據庫$mysqli_startTime = microtime(true);for($i=1;$i<=100;$i++){ mysqli_connect("localhost","root","1234","test");}$mysqli_endTime = microtime(true);$mysqli_time = $mysqli_endTime - $mysqli_startTime;echo $mysqli_time;echo "<hr/>";if($pdo_time > $mysqli_time){ echo "pdo的連接時間是mysqli的".round($pdo_time/$mysqli_time)."倍";}else{ echo "mysqli的連接時間是pdo的".round($mysqli_time/$pdo_time)."倍";}