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php中memcache 基本操作实例,memcache基本操作_PHP教程

程序员文章站 2024-04-03 13:29:22
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php中memcache 基本操作实例,memcache基本操作

php中memcache 基本操作实例




memcache democonnect($server_ip,$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 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)){ //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memcache for($i=0;$i 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 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['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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