In addition to memcache, a commonly used php operation class library, we may also be very familiar with memory cache, which is redis. we will share this php technical article with you, this is about how to use php to operate the redis memory cache tool library. Php redis Cache operations
<? Php/*** Redis Cache operation ** @ author hxm * @ version 1.0 * @ since 2015.05.04 */class RCache extends Object implements CacheFace {private $ redis = null; // redis object private $ sId = 1; // servier service ID private $ con = null; // link resource/*** initialize Redis ** @ return Object */public function _ construct () {if (! Class_exists ('redis ') {throw new QException ('php extension does not exist: Redis') ;}$ this-> Redis = new redis ();} /*** link memcahce service ** @ access private * @ param string $ key keyword * @ param string $ value cached content * @ return array */private function connect ($ sid) {$ file = $ this-> CacheFile (); require $ file; if (! Isset ($ cache) {throw new QException ('cache configuration file does not exist '. $ file) ;}$ server = $ cache [$ this-> cacheId]; $ sid = isset ($ sid) = 0? $ This-> sId: $ sid; // select if (! $ Server [$ sid]) {throw new QException ('Current cache server configuration file does not exist');} $ host = $ server [$ sid] ['host']; $ port = $ server [$ sid] ['port']; try {$ this-> redis-> connect ($ host, $ port);} catch (Exception $ e) {exit ('memecache connection failed, error message :'. $ e-> getMessage ());}} /*** write cache ** @ access private * @ param string $ key keyword * @ param string $ value cached content * @ return array */public function set ($ key, $ value, $ sid, $ expire = 0) {$ data = $ this-> get ($ key, $ sid); // if the key value if ($ data) already exists) {return $ this-> redis-> getset ($ key, $ value);} else {return $ this-> redis-> set ($ key, $ value );}} /*** read cache ** @ access private * @ param string $ key keyword * @ param int $ sid select the number of memcache servers * @ return array */public function get ($ key, $ sid) {$ this-> connect ($ sid); return $ this-> redis-> get ($ key);}/*** clean (delete) all elements that have been stored ** @ access private * @ return array */public function flush () {$ this-> connect (); return $ this-> redis-> flushall ();} /*** delete cache ** @ access private * @ param string $ key keyword * @ param int $ sid select the number of memcache servers * @ return array */public function remove ($ key, $ sid) {$ this-> connect (); return $ this-> redis-> del ($ key );} /* destructor * finally disable memcache */public function _ destruct () {if ($ this-> redis) {$ this-> redis-> close ();}}}
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