本文实例讲述了php使用mysqli和pdo扩展，测试对比mysql数据库的执行效率。分享给大家供大家参考，具体如下：

/**

* 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 "

//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 "

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";

}

测试结果：其实经过多次测试，pdo和mysqli的执行效率差不多。

希望本文所述对大家PHP程序设计有所帮助。