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"Cannot access empty property" error


HexCoder

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hello every one...

when in want to run my php code i get somthings like this error :

Fatal error: Cannot access empty property in C:\xampp\htdocs\cms-project\include\DBconnector.php on line 14

 

and my DBconnector.php file code is this :

 

<?php

//dbconnector class

require_once 'systemcomponents.php';

class DBconnector extends systemcomponents{

    var $link;

    var $thisquery;

    function DBconnector(){

        $settings=  systemcomponents::getsettings();

        $dbname=$settings['dbname'];

        $hostname=$settings['dbhost'];

        $dbusername=$settings['dbusername'];

        $dbpass=$settings['dbpassword'];

        //connect to data base

        $this->$link=mysql_connect($hostname,$dbusername,$dbpass);

        mysql_select_db($dbname);

        register_shutdown_function(array(&$this,'close'));

  function query($query){

        $this->$thisquery=$query;

        return mysql_query($query,$this->$link);

    }

  function fetchquery($queryresult){

        return mysql_fetch_array($queryresult);

    }

 

  function close(){

        mysql_close($this->$link);

    }

    }

    }

?>

 

please help me to resolve problem..

TanQ

 

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i remove $ and get new error :

Fatal error: Call to undefined method DBconnector::query() in C:\xampp\htdocs\cms-project\index.php on line 5

 

and this is my index.php code :

 

<?php
require_once('include/DBconnector.php');
$connectdb=new DBconnector();
$result=$connectdb->query("SELECT username FROM userinfo");
$row=$connectdb->fetchquery($result);
echo $row['username'];
?>

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