Basic memcache operations in php _ PHP Tutorial

Basic memcache operation instance in php. Basic memcache operation examples in php 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 me php in php

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

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Memcache demo $ Server_ip = '2017. 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 ', 'Ag1' => 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.

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Include ('Inc/common. inc. php '); If (! Isset ($ city) |! Is_array ($ city )){ Exit; } // Print_r ($ city); exit; $ Mem = new Memcache (); $ Mem-> connect ('localhost', '123 '); $ Expires = 15*60; // Check if cache exits If ($ value = $ mem-> get ($ city ))! = FALSE ){ Echo "get key from memcache :"." "; // $ Return = $ mem-> get ($ city ); // Echo json_encode ($ return ); } // If Else { $ ResultJson = fetch_data (); Echo count ($ resultJson )." "; If (count ($ resultJson) = 1 | empty ($ resultJson )){ // Value from mysql 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 memcache For ($ I = 0; $ I $ K [$ I] = $ rows [$ I] ['city']; $ V [$ I] ['city'] = $ rows [$ I] ['city']; $ V [$ I] ['pm25'] = $ rows [$ I] ['pm25']; $ Mem-> set ($ k [$ I], $ v [$ I], false, $ expires ); } // $ Return = $ mem-> get ($ city ); // Echo json_encode ($ return ); } // If Else { 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 memcache For ($ I = 0; $ I $ K [$ I] = $ rows [$ I] ['city']; $ V [$ I] ['city'] = $ rows [$ I] ['city']; $ V [$ I] ['pm25'] = $ rows [$ I] ['pm25']; $ Mem-> set ($ k [$ I], $ v [$ I], false, $ expires ); } // $ Return = $ mem-> get ($ city ); // Echo json_encode ($ return ); } // Else } // Else Foreach ($ 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_data Function 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 If ($ getJson [$ I] ['pm2 _ 5'] = 0) $ Count = 0; Else $ Count = 1; $ Sum = $ getJson [$ I] ['pm2 _ 5']; For ($ j = $ I + 1; $ j If (strcmp ($ getJson [$ j] ['area '], $ getJson [$ I] ['area']) = 0 ){ If ($ getJson [$ j] ['pm2 _ 5'] = 0 ){ Continue; } Else { $ Count ++; $ Sum + = $ getJson [$ j] ['pm2 _ 5']; $ Pm2_5 = $ sum/$ count; } } Else { // Insert into mysql $ Result ['city'] = $ getJson [$ I] ['region']; $ Result ['pm25'] = intval ($ pm2_5 ); $ Query = "insert into pm25 (city, pm25) values ('". $ result ['city']. "',". $ result ['pm25']. ")"; Mysql_query ($ query ); Break; } } } Return $ getJson; } // Func write_db $ Mem-> close (); ?>

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The following example describes the basic operations and usage of Memcache in PHP. Share it with you for your reference. If you need it, study it. Php me...