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HomeBackend DevelopmentPHP TutorialPHP验证数据库密码问题

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我是php初学者,写了一个到数据库验证用户的简单代码,无论输对的还是错的账号密码都不能通过验证。求高手指点


回复讨论(解决方案)

$res= mysqli_query($conn,$sql);
if($row= mysql_fetch_assoc($res)){

mysql 和 mysqli 是平行的两个扩展,不能混用!

$res= mysqli_query($conn,$sql);
if($row= mysql_fetch_assoc($res)){

mysql 和 mysqli 是平行的两个扩展,不能混用!


请问应当怎么写可以解决问题

$res= mysqli_query($conn,$sql);
if($row= mysql_fetch_assoc($res)){

mysql 和 mysqli 是平行的两个扩展,不能混用!


改成了if ($row=mysqli_fetch_assoc($res))解决了问题,感谢大神

header("Content-type: text/html; charset=utf-8");class cls_Mysqli{    private $db_host="localhost";    private $db_user="root";     private $db_password="root";    private $db_name="test";    protected $sql;    public $password;        function __construct($id,$password){    	  $this->password = $password;    	  $this->sql = "select password from admin where id = $id";    }          function checkPassword(){    	  global $link;        $link = mysqli_connect($this->db_host, $this->db_user, $this->db_password, $this->db_name) or die("数据库错误: " . mysqli_connect_error());        $res  = mysqli_query($link,$this->sql);        if ($row_val = mysqli_fetch_row($res)){              if ($this->password == $row_val[0]){                  return true;              }else{                  return false;              }                      }    }}$query = new cls_Mysqli(1,'123');print $query->checkPassword();mysqli_close($link);

@xuzuning
if 结构执行了return,这个mysqli资源要怎么释放才合理。

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