php+mysql 面向对象 增删改查

新手一枚，求指导。

<?php//   Mysql_class.phpclass Mysql{    private $localhost;    private $root;    private $password;	public  $database;     public function __construct($localhost,$root,$password,$database){			//让下面的方式中，若要用到$localhost 变量		$this->localhost = $localhost;											//就用$this->localhost 代替。 		$this->root 	 = $root;		$this->password  = $password;		$this->database  = $database;    }		public function Connect(){		mysql_connect	($this->localhost,$this-root,$this->password);		mysql_select_db ($this->database);		mysql_query 	("set names utf8");	}		public function Close(){		mysql_close();	}			public function myarray($result){					//形参		return mysql_fetch_array($result);	}		public function myquery($sql){		return @mysql_query($sql);	}		public function myrows($result){		return mysql_num_rows($result);	}			public function myselect($users){		return $this->myquery("select * from $users");	}}$db = new Mysql("localhost","root","","stu_system");

<?php    include_once "mysql_class.php";	    $result = $db->myselect("users");	if(is_array($result)){	while($row=$db->myarray($result)){?>		
	
		
id
		
name
		
sex
		
phone
	
		
 <?php echo $row['id'] 	 ?>
		
<?php echo $row['name'] 	 ?>
		
 <?php echo $row['sex'] 	 ?>
		
<?php echo $row['phone']  ?>
		
			&									name = <?php echo $row['name']?>&									sex  = <?php echo $row['sex'] ?>&									phone= <?php echo $row['phone'] ?>">  修改         			">	  删除		
	<?php	}	}	else echo"no result";	mysql_close();?>

回复讨论(解决方案)

if(is_array($result)){ 这句判断有问题。

$result应是resource，而不是array
你可以var_dump(is_array($result)); 是boolean false的。

改为： if($db->myrows($result)>0){

没有执行 Connect 方法
没有执行 myquery 方法

myselect 方法返回的是资源

没有执行 Connect 方法
没有执行 myquery 方法

myselect 方法返回的是资源

<?phpclass Mysql{    private $localhost;    private $root;    private $password;    public  $database;    private $link;    private $res;      public function __construct($localhost,$root,$password,$database){            //让下面的方式中，若要用到$localhost 变量        $this->localhost = $localhost;                                            //就用$this->localhost 代替。         $this->root      = $root;        $this->password  = $password;        $this->database  = $database;            }         public function Connect(){        $this->link = mysql_connect($this->localhost, $this->root, $this->password);        mysql_select_db ($this->database, $this->link );        mysql_query     ("set names utf8");    }         public function Close(){        mysql_close();    }              public function myarray($result){                    //形参        return mysql_fetch_array($result);    }         public function myquery($sql){        $this->res = mysql_query($sql) or die (mysql_error());        return $this->res;    }         public function myrows($result){        return mysql_num_rows($result);    }              public function myselect($users){        return $this->myquery("select * from $users");    }} $db = new Mysql("localhost","root","","stu_system");$db->Connect();<?php    include_once "mysql_class.php";    $result = $db->myselect("users");    while($row=$db->myarray($result)){?>       
    
        
id
        
name
        
sex
        
phone
    
        
 <?php echo $row['id']      ?>
        
<?php echo $row['name']      ?>
        
 <?php echo $row['sex']      ?>
        
<?php echo $row['phone']  ?>
        
            &                                    name = <?php echo $row['name']?>&                                    sex  = <?php echo $row['sex'] ?>&                                    phone= <?php echo $row['phone'] ?>">  修改                     ">      删除        
    <?php    }    mysql_close();