Basic memcache operations in php instance _ php instance

This article describes the basic operations and usage of Memcache in PHP. Share it with you for your reference. If you need it, study it. Basic memcache operation instance in php

memcache demo
 <?php$server_ip = '127.0.0.1';$server_port = 11211;$memcache = new Memcache();$memcache->connect($server_ip,$server_port);$memcache->add("name1","user_name1",MEMCACHE_COMPRESSED,0);$memcache->add("name2","user_name2",MEMCACHE_COMPRESSED,0);$array1 = array('name1' => 'jiajiam1', 'age1'=>12,'country'=>'china');$memcache->add("other",$array1,MEMCACHE_COMPRESSED,20);$memcache->set("name3","user_name3",MEMCACHE_COMPRESSED,0);$memcache->replace("name1","user_name_relpace",MEMCACHE_COMPRESSED,0);$memcache->replace("123","12345");echo"name1:".$memcache->get("name1")."
";$memcache->delete("name1");echo"name1:".$memcache->get("name1")."
";$array_get = array("name1","name2","name3");$result_get = $memcache->get($array_get);foreach ($result_get as $key => $value) {echo"$key:--->$value
";}foreach ($memcache->getStats() as $key => $value) {echo"$key:--->$value
";};echo"
";foreach($memcache->getExtendedStats() as $key => $value) {echo"$key:--->$value
";}$memcache->close();?>

Let's take a look at more specific instances.

<? Phpinclude ('inc/common. inc. php'); if (! Isset ($ city) |! Is_array ($ city) {exit;} // print_r ($ city); exit; $ mem = new Memcache (); $ mem-> connect ('localhost ', '20140901'); $ expires = 15*60; // check if cache exitsif ($ value = $ mem-> get ($ city ))! = FALSE) {echo "get key from memcache :"."
"; // $ Return = $ mem-> get ($ city); // echo json_encode ($ return) ;}// ifelse {$ resultJson = fetch_data (); echo count ($ resultJson )."
"; If (count ($ resultJson) = 1 | empty ($ resultJson) {// echo" get key from mysql :"."
"; $ Query =" select * from pm25 "; $ result = mysql_query ($ query); while ($ row = mysql_fetch_assoc ($ result )) {$ rows [] = $ row;} // Save the obtained value array to memcachefor ($ I = 0; $ I
 
  
Set ($ k [$ I], $ v [$ I], false, $ expires);} // $ return = $ mem-> get ($ city ); // echo json_encode ($ return);} // ifelse {echo "get key from new_writed mysql :"."
  
"; Write_db ($ resultJson); $ query =" select * from pm25 "; $ result = mysql_query ($ query); while ($ row = mysql_fetch_assoc ($ result )) {$ rows [] = $ row;} // write memcachefor ($ I = 0; $ I
  
   
Set ($ k [$ I], $ v [$ I], false, $ expires);} // $ return = $ mem-> get ($ city ); // echo json_encode ($ return);} // else} // elseforeach ($ city as $ k => $ v) {$ return [$ k] = $ mem-> get ($ v);} echo json_encode ($ return); function fetch_data () {$ url = "http://www.example.com "; // $ url = ""; $ data = http_get ($ url); $ getJson = json_decode ($ data, true); return $ getJson ;} // func fetch_datafunction write_db ($ getJson) {$ SQL = "delete from pm25"; mysql_query ($ SQL ); // sort the json.txt foreach ($ getJson as $ key => $ row) {$ area [$ key] = $ row ['region']; $ pm2_5 [$ key] = $ row ['pm2 _ 5'];} array_multisort ($ area, SORT_ASC, $ pm2_5, SORT_ASC, $ getJson ); for ($ I = 0; $ I
   
    
Close ();?>
   
  
 

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