php mysql_connect Óëmysql_pconnectº¯ÊýÓëʵÀý½Ì³Ì

php½Ì³Ì mysql½Ì³Ì_connect Óëmysql_pconnectº¯ÊýÓëʵÀý½Ì³Ì
mysql_connect
 mysql_connect($this->root,$this->user,$this->pass)
/*
mysql_connect ,µ¥¸ö·´ÎÊÓû§²»»áƵ·±µÄµ÷ÓÃÊý¾Ý¿â½Ì³Ì£¬Ã»±ØÒª±£³ÖÁ¬½Ó£¬¶øÇÒmysqlµÄÁ¬½ÓÊýÒ²ÊÇÓÐÏÞÖƵģ¬ ʹÓà ¼°Ê±·ÃÎʱȽÏƵ·±£¬Ò²×îºÃʹÓÃmysql_connect£¬ÕâÑùʹÓõĹýµÄ×ÊÔ´¿ÉÒÔÁ¢¿ÌÊÍ·Å£¬·ñÔò£¬ÈÝÒ×Ôì³É×ÊÔ´ºÄ
*/
mysql_pconnect
/*
mysql_pconnect() º¯Êý´ò¿ªÒ»¸öµ½ MySQL ·þÎñÆ÷µÄ³Ö¾ÃÁ¬½Ó
*/
$con = mysql_pconnect("localhost","mysql_user","mysql_pwd");
if (!$con)
  {
  die('Could not connect: ' . mysql_error());
  }
 
class testLinkMysql{ 
  public $conn;
  public $root='localhost';
  public $user='root';//'loupan';
  public $pass='root';//'loupandsffds';
  public $db='dbname';
  public $charset='gbk';
  public $links='c'; //±êÌâ
  
  function __construct() {
    if( !$this->conn )
   {
    $this->connect();
   }   
  }
  
    
  function __destruct() {
   if( $this->conn )
   {
          $this->close();
   }
     }
  
  
  function MysqlConnect()
  {
   try{
    if( 'p' == $this->links )
    {
     $this->conn = mysql_pconnect($this->root,$this->user,$this->pass) or die(mysql_error());       
    }
    else
    {
     $this->conn = mysql_connect($this->root,$this->user,$this->pass) or die( mysql_error());
    }
    mysql_select_db($t