求问小弟我自己写的这个DB类，错哪了，插不进数据

程序员文章站 2022-06-15 18:28:31

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求问我自己写的这个DB类，哪里错了，插不进数据

	class DB{
		private $hostname;
		private $username;
		private $password;
		private $select_db;
		private $con;
		private $Error;

		public function __construct($hostname,$username,$password,$select_db){
			if(!empty($hostname)&&!empty($username)&&!empty($select_db))//检查参数是否为空，否则不赋值
			{
				$this->hostname = $hostname;
				$this->username = $username;
				$this->password = $password;
				$this->select_db = $select_db;
				$this->con = mysql_connect($this->hostname,$this->username,$this->password);
				if(!$this->con){
					$this->Error = die('Could Not Connect:'.mysql_error);
				}
				else{
					mysql_select_db($this->select_db,$this->con);
				}
			}
		}
		public function __destruct(){//退出时结束连接
			mysql_close($this->con);
		}
		public function insert($table,$body){//插入table中的一个数组
			$line1 = implode(',',$body);
			$line2 = implode(',',array_keys($body));
			echo $sql = "INSERT INTO $table ($line2) VALUES ($line1)";
			$result = mysql_query($sql,$this->con);
			if(!$result){
				echo $this->Error;
				echo '111';
			}

		}
		public function update($table,$body){

		}
		public function read($table,$keyword){

		}
		public function delete($table,$keyword){

		}
		public function getLastError(){//返回最后一条错误信息
			return $this->Error;
		}
	}
?>

主页调用的是

require('DB.class.php');
	$DB = new DB('localhost','root','','dbtest');
	$line1 = array(
			'aa'=>'`aa`',
			'bb'=>'`dd`'
	);
	$DB->insert('1234',$line1);
?>

echo $sql语句是INSERT INTO 1234 (aa,bb) VALUES (`aa`,`dd`)

------解决方案--------------------
require('DB.class.php');
$DB = new DB('localhost','root','','dbtest');
$line1 = array(
'aa'=> "'aa'",
'bb'=> "'dd'"
);
$DB->insert('1234',$line1);

------解决方案--------------------
你的$line1数组写反了。
而且insert 语句还有一种格式：insert into tb_member set username = "test", type = 1, lastlogindt = now()。跟update样式差不多。
你也可以看看人家写的数据库类，我感觉挺好的：http://www.cnblogs.com/hooray/archive/2012/07/21/2603017.html