Community Learn Tools Library Leisure
search
English
Home > Backend Development > PHP Tutorial > 浅谈php中mysql与mysqli的区别分析_php技巧

浅谈php中mysql与mysqli的区别分析_php技巧

WBOY
Release： 2016-05-17 09:01:54
Original
986 people have browsed it

首先两个函数都是用来处理DB 的。
首先， mysqli 连接是永久连接，而mysql是非永久连接。什么意思呢？ mysql连接每当第二次使用的时候，都会重新打开一个新的进程，而mysqli则只使用同一个进程，这样可以很大程度的减轻服务器端压力。
其次，mysqli封装了诸如事务等一些高级操作，同时封装了DB操作过程中的很多可用的方法。
应用比较多的地方是 mysqli的事务。
比如下面的示例：

复制代码 代码如下:

$mysqli = new mysqli('localhost','root','','DB_Lib2Test');
$mysqli->autocommit(false);//开始事物
$mysqli->query($sql1);
$mysqli->query($sql2);
if(!$mysqli->errno){
  $mysqli->commit();
  echo 'ok';
}else{
 echo 'err';
  $mysqli->rollback();
}
 　　

Related labels：
mysql mysqli the difference
source：php.cn
Previous article：深入PHP变量存储的详解_php技巧 Next article：深入PHP中的HashTable结构详解_php技巧
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
How to display only the lowest value from a result set (MYSQL) I have the following statement: selectDATE(recieved_on)asDay,round(count(*)/24)AS'average'...
From 2024-04-06 21:44:19
0
1
603
Calculate the sum of fields in another table using MySQL SQL query I have a schema like this: User table with attributes "user_id" and "userna...
From 2024-04-06 19:39:29
0
1
441
MySQL: "Select text from... as <variable here or subquery>" I have the following table with the following data: id text language 1 german text german ...
From 2024-04-06 19:25:54
0
2
529
How to group and count in MySQL? I'm trying to write a query that extracts the total number of undeleted messages sent to f...
From 2024-04-06 18:30:17
0
1
353
MySQL gets data from multiple tables I have a eg_design table which contains the following columns: and eg_domains table which ...
From 2024-04-06 18:42:44
0
2
479
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template