Mysql read-write separation operation implemented by PHP-PHP Tutorial-php.cn

Mysql read-write separation operation implemented by PHP

不言

Release： 2023-03-28 22:30:01

Original

1433 people have browsed it

This article mainly introduces the mysql read-write separation operation implemented by PHP, briefly describes the principle of mysql read-write separation, and combines examples to provide relevant implementation techniques for PHP to operate different databases with mysql read-write sql statements. , Friends who need it can refer to

The example in this article describes the mysql read-write separation operation implemented by PHP. Share it with everyone for your reference, the details are as follows:

First of all, the mysql master and slave need to be configured. The basic principle is to determine whether the sql statement is select. If so, go to the master library, otherwise check from the slave

<?php
/**
* mysql读写分离
*/
class db{
  public function __construct($sql){
    $chestr = strtolower(trim($sql));
    //判断sql语句有select关键字的话，就连接读的数据库,否则就连接写数据库
    if(substr($chestr,0,6)==&#39;select&#39;)
    {
      echo &#39;I am using slave db..<br>&#39;;
      $link = mysql_connect("192.168.20.201:3306", "open", "123456") or die("Could not connect: " . mysql_error());
      mysql_select_db("hadoop");
      $result = mysql_query($sql);
      while($row = mysql_fetch_array($result,MYSQL_ASSOC)){
        $data[]=$row;
      }
      //print_r($data);exit;
      echo mysql_get_host_info($link).mysql_get_server_info($link).mysql_get_proto_info($link).mysql_get_client_info().&#39;<br>&#39;;
    }else{
      echo &#39;I am using master db..<br>&#39;;
      $link = mysql_connect("192.168.20.195:3306","open","123456") or die("Could not connect: " . mysql_error());
      mysql_select_db("hadoop");
      $result = mysql_query($sql);
      //echo @mysql_affected_rows($result);
      echo mysql_get_host_info($link).mysql_get_server_info($link).mysql_get_proto_info($link).mysql_get_client_info().&#39;<br>&#39;;
    }
  }
}
$master = new db("INSERT INTO user (id,name)VALUES (NULL,&#39;100&#39;)");
$slave = new db("SELECT * from `user`");

Copy after login

Result:

I am using master db..
192.168.20.195 via TCP/IP5.1.73-log10mysqlnd 5.0.8-dev - 20102224 - $Id: 731e5b87ba42146a687c29995d2dfd8b4e40b325 $
I am using slave db..
192.168.20.201 via TCP/IP5.1.73-log10mysqlnd 5.0.8-dev - 20102224 - $Id: 731e5b87ba42146a687c29995d2dfd8b4e40b325 $

Copy after login

Related recommendations:

MySQL database backup function implemented by ThinkPHP framework

The above is the detailed content of Mysql read-write separation operation implemented by PHP. For more information, please follow other related articles on the PHP Chinese website!