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PHP Class Private Properties Not Holding Values

Posted on 2011-03-24
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Last Modified: 2012-05-11
Experts,

I have member_login.php that instantiate a class object like this:

                  $memObj = new memberAccount();
                  $memObj->setUsername($t_username);
                  $memObj->setUserpass($t_userpass);
                  $memObj->setUseremail($t_useremail);
                  echo 'I can get the user email from getUseremail: '.$memObj->getUseremail().'<br />';

Inside the class (memberAccount.inc) looks like this:

<?php
class memberAccount
{
      //Class page attributes
      private $usernameClass;
      private $userpassClass;
      private $useremailClass;

      function __construct()
      {
            echo "went through constructor<br />";
      }
      //setting and getting usernameClass
      function setUsername($t_username)
      {
            $this->usernameClass = $t_username;
      }
      function getUsername()
      {
            return $this->usernameClass;
      }
      //setting and getting userpassClass
      function setUserpass($t_userpass)
      {
            $this->userpassClass = $t_userpass;
      }
      function getUserpass()
      {
            return $this->userpassClass;
      }
      //setting and getting useremailClass
      function setUseremail($t_useremail)
      {
            $this->useremailClass = $t_useremail;
      }
      function getUseremail()
      {
            return $this->useremailClass;
      }

      public function display()
      {
            echo 'Username: '.$this->usernameClass.'<br />';
            echo 'userpass: '.$this->userpassClass.'<br />';
            echo 'Email: '.$this->useremailClass.'<br />';
      }
}
?>

It displays the properties in the class from calling the function display().

However, when I click a link in member_login.php and jump to member_accountChage.php, where I also call the function, display(), it doesn't display what those properties hold anymore.  They seem to be empty.

How can I make the class properties hold values while user goes back and forth between different files?  Or what am I doing wrong?

Thank you!
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Question by:Kokko
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3 Comments
 
LVL 83

Accepted Solution

by:
Dave Baldwin earned 2000 total points
ID: 35213007
Any data that is not defined in the file, you have to save and reload each time.  You can put the data in a file, a database, a $_SESSION variable (if sessions are being used), or explicitly pass the data to the next file.  Otherwise the data in a PHP page lasts only as long as it takes to execute the page.  By the time you see it on the screen, it's gone.
0
 

Author Closing Comment

by:Kokko
ID: 35214774
DaveBaldwin,

I'm using $_SESSION so I'll go this route to pass data.  I might have to ask more questions later on as I work on it, but for now I know class doesn't hold data between pages so I'm good to go.

Thank you very much!

Motoko
0
 
LVL 83

Expert Comment

by:Dave Baldwin
ID: 35216480
Good, thanks for the points.
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