php中memcache 基本操作实例

php  /  管理员 发布于 7年前   139

php中memcache 基本操作实例

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();?>

我们再来看个更加具体些的实例

 connect('localhost', '11211');$expires=15*60;//check if cache exitsif(($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)){//从mysql中取值echo "get key from mysql:"."
";$query="select * from pm25";$result=mysql_query ($query) ;while ($row = mysql_fetch_assoc($result)){$rows[]=$row;}//将获取的值数组存入memcachefor($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.txtforeach ($getJson as $key => $row) {$area[$key] = $row['area'];$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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