this->

[php_guest]

I am looking at code where class is created. On the line 8 is "...$this->connection)". Please explain me when do we use $this->.

 

I thought first that we use it for variable inside function which is declared inside class creation. But I see I am wrong because than it should be also before result and q in the same line $this->.

 

class MySQLDB

{

function usernameTaken($username){

      if(!get_magic_quotes_gpc()){

        $username = addslashes($username);

      }

      $q = "SELECT username FROM ".TBL_USERS." WHERE username = '$username'";

      $result = mysql_query($q, $this->connection);

      return (mysql_numrows($result) > 0);

 

 

[Mchl]

$this-> is used to access methods and properties of current object.

 

http://www.php.net/manual/en/language.oop5.basic.php

[php_guest]

$this-> is used to access methods and properties of current object.

 

http://www.php.net/manual/en/language.oop5.basic.php

 

But why in the line $result = mysql_query($q, $this->connection); also $q isn't wrote in the same way as connection. Isn't also q a method?

[Prismatic]

$this-> is used to access methods and properties of current object.

 

http://www.php.net/manual/en/language.oop5.basic.php

 

But why in the line $result = mysql_query($q, $this->connection); also $q isn't wrote in the same way as connection. Isn't also q a method?

 

$q is the query

 

<?php
class MySQLDB
{
function usernameTaken($username){
      if(!get_magic_quotes_gpc()){
         $username = addslashes($username);
      }
      $q = "SELECT username FROM ".TBL_USERS." WHERE username = '$username'"; // <--- $q
      $result = mysql_query($q, $this->connection);
      return (mysql_numrows($result) > 0);
?>

 

$this->connection refers to a connection variable inside the current class

 

 

edit - sorry meant variable not method