Memcached and mysql master slave environment PHP development code

 
<?php 
$memcached = array( //Using memcached's multi-process simulation of multiple memcached servers, cn en is the memory server name
'cn'=>array('192.168.254.144',11211), 
'en'=>array('192.168.254.144',11212) 
); 
$mysql = array( //Mysql master slave my environment is: xp master Linux from mysql 5 php5
'master'=>array('192.168.254.213','root','1','mydz'), 
'slave_1'=>array('192.168.254.144','root','1','mydz') //Multiple slave servers can be added flexibly
); 
?> 

Server profile: very convenient to switch from master to slave. When the master is changed from slave, you can quickly switch master. Support multiple slave servers.

 
<?php 
class Memcached 
{ 
private $mem; 
public $pflag=''; // memcached pconnect tag 
private function memConnect($serkey){ 
require 'config.php'; 
$server = $memcached; 
$this->mem = new Memcache; 
$link = !$this->pflag ? 'connect' : 'pconnect' ; 
$this->mem->$link($server[$serkey][0],$server[$serkey][1]) or $this->errordie('memcached connect error'); 
} 
public function set($ser_key,$values,$flag='',$expire=''){ 
$this->memConnect($this->tag($ser_key)); 
if($this->mem->set($ser_key,$values,$flag,$expire)) return true; 
else return false; 
} 
public function get($ser_key){ 
$this->memConnect($this->tag($ser_key)); 
if($var=$this->mem->get($ser_key)) return $var; 
else return false; 
} 
private function tag($ser_key){ 
$tag=explode('_',$ser_key); 
return $tag[0]; 
} 
private function errordie($errmsg){ 
die($errmsg); 
} 
} 
?> 

Simply encapsulate the operation of memcached. Time is running out. I'm leaving the company
On memcached's multiple servers, I implemented it this way: when adding information to the memory server, I chose to manually add it to that server instead of automatically assigning it by ID.
So it's a little bit more flexible.
I'm going to write it as the memory server name so I'm going to put $arr in this memory server en and I'm going to say $mem-> Set (' en_ '. $arr); I see!

 
class Mysql 
{ 
private $mysqlmaster; 
private $myssqlslave; 
private static $auid=0; 
public function __construct(){ 
require 'config.php'; 
$msg = $mysql; 

$this->mysqlmaster = new mysqli($msg['master'][0],$msg['master'][1],$msg['master'][2],$msg['master'][3]); //master mysql 
$this->mysqlslave = $this->autotranscat($msg); // slave mysql 
if(mysqli_connect_errno()){ 
printf("Connect failed: %sn",mysqli_connect_error()); 
exit(); 
} 
if(!$this->mysqlmaster->set_charset("latin1") && !$this->mysqlslave->set_charset("latin1")){ 
exit("set charset error"); 
} 
} 
private function autotranscat($mysql){ 
session_start(); 
$_SESSION['SID']!=0 || $_SESSION['SID']=0 ; 
if($_SESSION['SID'] >=count($mysql)-1) $_SESSION['SID'] = 1; 
else $_SESSION['SID']++; 
$key = 'slave_'.$_SESSION['SID']; 
echo($_SESSION['SID']); 
return new mysqli($mysql[$key][0],$mysql[$key][1],$mysql[$key][2],$mysql[$key][3]); 
} 
public function mquery($sql){ //insert update 
if(!$this->mysqlmaster->query($sql)){ 
return false; 
} 
} 
public function squery($sql){ 
if($result=$this->mysqlslave->query($sql)){ 
return $result; 
}else{ 
return false; 
}; 
} 
public function fetArray($sql){ 
if($result=$this->squery($sql)){ 
while($row=$result->fetch_array(MYSQLI_ASSOC)){ 
$resultraa[] = $row; 
}; 
return $resultraa; 
} 
} 
} 
?> 

This is the encapsulation of mysqli, which is the encapsulation of the read-write operation.

 
require 'init.php'; 
$mem = new Memcached; 
 
$sq = new Mysql; 
$sql = "insert into mybb(pid) values(200)"; 
$mdsql = md5($sql); 
if(!$result=$mem->get('cn_'.$mdsql)){ 
$sq->mquery("insert into mybb(pid) values(200)"); //Insert into main mysql
$result = $sq->fetArray("select * from mybb"); //The query is from mysql
foreach($result as $var){ 
echo $var['pid']; 
} 
$mem->set('cn_'.$mdsql,$result); //Add to the memcached server named cn
}else{ 
foreach($result as $var){ 
echo $var['pid']; 
} 
} 
?>