php - Memcache->get 返回不同的数组

Question

我做了这个功能:/* 内存缓存 */

function cache_query($sql,$nombre,$tiempo = -1){
    $cache = new Memcache();
    $cache->pconnect('localhost',11211);
    $query_cacheada = $cache->get($nombre);
    if ( $query_cacheada  === false ) {
             /* key not in memcache, perfom query, cache it and return */
         $res = mysql_query($sql);
         $cache->set($nombre,$res, 0, 60*60*24);  
         return $res; /* this looks good */
    }else{
             /* key in memcache, just return cached  */
         return $query_cacheada;  /* this doesnt return right elements */
    }
}

我正在使用:

class text{

    protected $id;
    protected $key;
    protected $language;
    protected $text;

    function __construct($clave,$lan){
       $consulta = cache_query("SELECT * FROM textos  
                                WHERE clave = '$clave' AND lengua = '$lan'" ,"TRANSLATION_".$clave."_".$lan);


        if(mysql_num_rows($consulta)>0){
            while($item = mysql_fetch_array($consulta)){
                $this->id = $item['id'];
                $this->clave = $item['key'];
                $this->lengua = $item['language'];
                $this->texto = $item['text'];

            }
                return true;
         }
    }
    function get_text(){
          return $this->text;
    }
}
function translation($key,$language){
     $tem = new text($key,$language);
     return $tem->get_text();
}

然后:

$translationText = translation('hello','fr');

问题在于它存储在缓存数组中(始终为零)，var_dump($m->get(k)) 返回:

int(0) int(0) int(0) int(0) int(0) int(0) int(0) int(0) int(0) int(0) int(0) .....

$sql 查询很好因为行收集和打印都很好，问题出在存储值上..

我已经清除了缓存(多次，以确保这些值不是来自之前的错误输出):

$consulta = $cache->get($nombre);
             /* manually*/
             $consulta = false;
        if ( $consulta === false) {
            $consulta = mysql_query($sql);
            $cache->set($nombre,$consulta, MEMCACHE_COMPRESSED, 60*60*24);
        };

所以..我错过了什么？

编辑

这是一个键盘，问题是 mysql_query 和 memecache 没有启用，但以防万一有人想摆弄一下

http://codepad.viper-7.com/PJNepH

Answer 1

您只能缓存可以是 serialized 的内容.这包括除类型 resource 之外的所有内容(从成功的 mysql_query 返回)。您需要稍微更改逻辑以便缓存数组。改变这个:

$res = mysql_query($sql);
$cache->set($nombre,$res, 0, 60*60*24); 

收件人:

$res = mysql_query($sql);
$rows = array();
while($row = mysql_fetch_array($res)) $rows[] = $row;
$cache->set($nombre, $rows, 0, 60*60*24); 

然后改变这个:

if(mysql_num_rows($consulta)>0){
    while($item = mysql_fetch_array($consulta)){
        $this->id = $item['id'];
        $this->clave = $item['key'];
        $this->lengua = $item['language'];
        $this->texto = $item['text'];

    }
    return true;
}

收件人:

foreach($consulta as $item){
       $this->id = $item['id'];
       $this->clave = $item['key'];
       $this->lengua = $item['language'];
       $this->texto = $item['text'];
}

// This is your old code written to work with a 2D array instead of a resource,
// But this keeps overwriting the same variables in a loop,
// if you selected multiple rows; otherwise you don't even need a loop and can just do:

$this->id = $consulta[0]['id'];
$this->clave = $consulta[0]['key'];
$this->lengua = $consulta[0]['language'];
$this->texto = $consulta[0]['text'];