Question

Possible Duplicate:
PHP: “Notice: Undefined variable” and “Notice: Undefined index”

I have reduced this error down to the smallest amount of code and it is so small, that I really feel stupid here.

I have 2 files class1.php :

  1 <?php
  2 class insertText{
  3         //properties
  4         protected $paragraph1='<p>this is a test paragraph</p>';
  5         protected $bigHeader='<h1>header1</h>';
  6         protected $textArray;
  7
  8         public function __construct () {
  9                 $this->$textArray = array($this->$bigHeader1, $this->$paragraph1);
 10         }
 11         public function getText(){
 12                 return $this->$textArray;
 13         }
 14 }
 15 ?>

and test.php:

1 <?php
2 include './class1.php';
3 echo "Begin\n";
4
5 $filler = new insertText();
6 echo $filler->getText();
7
8 echo "end\n";
9 ?>

When I run:
$ php text.php

Begin
PHP Notice:  Undefined variable: bigHeader1 in class1.php on line 9
PHP Fatal error:  Cannot access empty property in class1.php on line 9

I know that this has te be an easy answer, and I did search and search every post with either error message. I even tried moving the assignment of text to the variables to within the constructor and it dodn’t work.

Answer 1

You need to use:

$this->textArray = array($this->bigHeader1, $this->paragraph1);

…instead of..

$this->$textArray = array($this->$bigHeader1, $this->$paragraph1);

i.e.: The second dollar symbol in $this->$bigHeader1 is redundant. (You’re in effect attempting to access a class element that would be defined within the $bigHeader1 variable, as opposed to the class instance variable itself.)