php
中memcache 基本操作实例，memcache基本操作
php中memcache 基本操作实例
我们再来看个更加具体些的实例
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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 !DOCTYPE htmlhtmlheadtitlememcache demo/titlemeta http-equiv="content-type"content="text/...
memcache demo
<?php
$server_ip = '127.0.0.1';
$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',
'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
";
}
$memcache->close();
?>
<?php
include('inc/common.inc.php');
if (! isset($city) || ! is_array($city) ) {
exit;
}
//print_r ($city);exit;
$mem = new Memcache();
$mem-> 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();
?>