php使用mysqli和pdo扩展，测试对比mysql数据库的执行效率完整示例

<?php/** * 测试pdo和mysqli的执行效率 */header("Content-type:text/html;charset=utf-8");//通过pdo链接数据库$pdo_startTime = microtime(true);$pdo = new PDO("mysql:host=localhost;dbname=test","root","1234",array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES'utf8';"));for($i=1;$i<=100;$i++){  $title = "pdo标题".$i;  $content = "pdo内容".$i;  $addtime = time();  $user_id = $i;  $pdo_sql = "INSERT INTO `article`(`title`,`content`,`addtime`,`user_id`) VALUES(:title,:content,:addtime,:user_id)";  $sth = $pdo->prepare($pdo_sql);  $sth->bindParam(':title',$title);  $sth->bindParam(':content',$content);  $sth->bindParam(':addtime',$addtime);  $sth->bindParam(':user_id',$user_id);  $sth->execute();}$pdo_endTime = microtime(true);$pdo_time = $pdo_endTime - $pdo_startTime;echo $pdo_time;echo "<hr/>";//通过mysql链接数据库$mysqli_startTime = microtime(true);$mysqli = mysqli_connect("localhost","root","1234","test") or die("数据连接失败");mysqli_query($mysqli,"set names utf8");for($i=1;$i<=100;$i++){  $title = "mysqli标题".$i;  $content = "mysqli内容".$i;  $addtime = time();  $user_id = $i;  $sql = "INSERT INTO `article`(`title`,`content`,`addtime`,`user_id`) VALUES('".$title."','".$content."',".$addtime.",".$user_id.")";  mysqli_query($mysqli,$sql);}$mysqli_endTime = microtime(true);$mysqli_time = $mysqli_endTime - $mysqli_startTime;echo $mysqli_time;echo "<hr/>";if($pdo_time > $mysqli_time){  echo "pdo的执行时间是mysqli的".round($pdo_time/$mysqli_time)."倍";}else{  echo "mysqli的执行时间是pdo的".round($mysqli_time/$pdo_time)."倍";}