PHP File Cache class

PHP File Cache? Php *** simple File cache class usage $ cachenewXZCache (); $ keyglobal; $ value $ GLOBALS; $ cache-saveCache ($ key, $ value ); $ result $ cache-getCache ($ key); var_dump ($ result); ** classXZCache {defaultcachetimeonehourvar

PHP File Cache? Php/*** simple File cache class usage $ cache = new XZCache (); $ key = 'global'; $ value = $ GLOBALS; $ cache-saveCache ($ key, $ value); $ result = $ cache-getCache ($ key); var_dump ($ result); **/class XZCache {// default cache time one hourvar

PHP File Cache

 SaveCache ($ key, $ value); $ result = $ cache-> getCache ($ key); var_dump ($ result ); **/class XZCache {// default cache time one hourvar $ cache_time = 3600; // default cache dirvar $ cache_dir = '. /cache '; public function _ construct ($ cache_dir = null, $ cache_time = null) {$ this-> cache_dir = isset ($ cache_dir )? $ Cache_dir: $ this-> cache_dir; $ this-> cache_time = isset ($ cache_time )? $ Cache_time: $ this-> cache_time;} public function saveCache ($ key, $ value) {if (is_dir ($ this-> cache_dir )) {$ cache_file = $ this-> cache_dir. '/xzcache _'. md5 ($ key); $ timedif = @ (time ()-filemtime ($ cache_file); if ($ timedif >=$ this-> cache_time) {// cached file is too old, create new $ serialized = serialize ($ value); if ($ f = @ fopen ($ cache_file, 'w ')) {fwrite ($ f, $ serialized, strlen ($ serialized); fclose ($ f) ;}$ result = 1 ;}else {echo "Error: dir is not exist. "; $ result = 0;} return $ result;}/*** @ return array * 0 no cache * 1 cached * 2 overdue */public function getCache ($ key) {$ cache_file = $ this-> cache_dir. '/xzcache _'. md5 ($ key); if (is_dir ($ this-> cache_dir) & is_file ($ cache_file) {$ timedif = @ (time () -filemtime ($ cache_file); if ($ timedif >=$ this-> cache_time) {$ result ['cached'] = 2 ;} else {// cached file is fresh enough, return cached array $ result ['value'] = unserialize (file_get_contents ($ cache_file )); $ result ['cached'] = 1 ;}} else {echo "Error: no cache"; $ result ['cached'] = 0 ;}return $ result ;}} // end of class