php - mysqli_prepare() expects parameter 1 to be mysqli, object given -

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alright. basically. here's code.

login.php

require_once("./libs/db_cxn.php");      $cxn = new newconnection();      $stmt = "select users.username users username=$username , password=md5($password)";     $qry = \mysqli_prepare($cxn, $stmt);     $res = mysqli_execute($qry);

db_cxn.php

class newconnection{      function __construct(){         $conf = array(             "host" => "localhost",             "username" => "root",              "password" => "root",             "dbname" => "db_bookworm",             "port" => ini_get("mysqli.default_port"),             "socket" => ini_get("mysqli.default_socket"),             "prefix" => "bworm_"         );         $cxn = new mysqli($conf["host"], $conf["username"], $conf["password"], $conf["dbname"]);          if ($cxn->connect_errno){             \printf("connection failed: %s\n", $cxn->connect_error);             exit();         }     }      function _destruct(){         mysqli_close($this);     } }

i have error reporting on, , following error message given whenever attempt run code

warning: mysqli_prepare() expects parameter 1 mysqli, object given in \\moriarty\home\15\5cba2901\desktop\comp_proj\project\www\login.php on line 34

any clues on how fix this? have created connection class due how frequent opening connections, , figured it'd save time , grief on part. appreciated!

<?php  /**   change code :   ---------------------   db_cxn.php file   ---------------------  * */ class newconnection {      static $cxn;      function __construct() {         $conf = array(             "host" => "localhost",             "username" => "root",             "password" => "",             "dbname" => "test",             "port" => ini_get("mysqli.default_port"),             "socket" => ini_get("mysqli.default_socket"),             "prefix" => ""         );         self::$cxn = mysqli_connect($conf["host"], $conf["username"], $conf["password"], $conf["dbname"]);          if (self::$cxn->connect_errno) {             \printf("connection failed: %s\n", self::$cxn->connect_error);             exit();         }     }      function getconnection() {         return self::$cxn;     }      function _destruct() {         mysqli_close($this);     }

}


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