Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in D:\appserv\apache\htdocs\zend\empManage\SqlHelper.class.php on line 18 提示不是一个有效的MYSQL-LINK资源 这个到底怎么解决啊?
class SqlHelper{ public $conn; public $dbname="empmange"; public $username="root"; public $password="wal77130'"; public $host="localhost"; public function _construct(){ $this->conn=mysql_connect($this->host,$this->username,$this->password,$this->dbname); mysql_select_db($this->dbname,$this->conn); if(!$this->conn){ die("连接失败".mysql_error($this->conn)); } } //执行dql public function execute_dql($sql){ $res=mysql_query($sql,$this->conn) or die(mysql_error()); return $res; }
$res=mysql_query($sql,$this->conn) or die(mysql_error()); 这里
public $conn;
public $dbname="empmange";
public $username="root";
public $password="wal77130'";
public $host="localhost";
public function _construct(){
$this->conn=mysql_connect($this->host,$this->username,$this->password,$this->dbname);
mysql_select_db($this->dbname,$this->conn);
if(!$this->conn){
die("连接失败".mysql_error($this->conn));
}
}
//执行dql
public function execute_dql($sql){
$res=mysql_query($sql,$this->conn) or die(mysql_error());
return $res;
}