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PHP7.3.5封装类访问mysql数据库

Model.class.php

<?phpclass Model{    // 表名属性    public $table;    public $connect;    //构造方法以及表名赋值    public function __construct($t){        $this->table=$t;            }    private function conn(){        $servername = "localhost";        $username = "root";        $password = "133";        $dbname = "myweb";        // 创建连接              if($conn=mysqli_connect($servername, $username, $password, $dbname)){            return $this->connect=$conn;       }            }    //select查询    public function select(){    $this->conn();      $sql="SELECT * FROM {$this->table}";    $rst=mysqli_query($this->connect,$sql);    while($row=mysqli_fetch_assoc($rst)){        $rows[]=$row;    }    return $rows;    }}?>

function.inc.php

<?phpfunction M($name){    return new Model($name);}?>

index.php

<?phpinclude "Model.class.php";include 'function.inc.php';$rows=M('user')->select();echo '<pre>';print_r($rows);echo '</pre>';?>

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