php_json入库有关

php入库json信息 有些字符需要特殊处理

 //组装
       $test=array();
      $test["k1"]= urlencode($k1);
      $test["k2"]=urlencode($k2);
      $test["k3"]=urlencode($k3);
      $test= urldecode(json_encode($test));
      echo $test."\n";
      //exit;
 //入库处理
      $sql="update tblTest set test=unhex('".bin2hex($test)."')  where sid="."'$sid'";
      mysql_query($sql);

     //解析
                $obj=json_decode($content,true);
                 $k1=$obj['k1'];
                 $k2=$obj['k2'];
                 $k3=$obj['k3'];