[SOLVED] Can't access array in a class

[percent20]

I have been trying to access a public array inside a class, but it is freaking out on me.  Should this be able to work?

 

$TestArra = array('Hello', ' ', 'World');

class Test
{
function Test()
{
	$this->Display();
}

function Display()
{
	foreach($TestArray as $value)
	{
		echo $value;
	}
}
}		

 

shouldn't that display "Hello World" on the page? instead i get this error:

 

Warning: Invalid argument supplied for foreach() in C:\xampplite\htdocs\xampp\Links\test.php on line

 

Maybe I just don't understand something.  Any help would be great.

 

Thanks.

 

p.s. Also I can't create an array for some reason either. I tried $a = array('a'); and $a[0] = 'a'; neither would seem to work in the class.

[hitman6003]

The variable $TestArray is outside the scope of the method of your class...

 

http://www.php.net/language.variables.scope

[venky_lb]

array has been declared outside the class.check the array name and that is given in foreach

[KevinM1]

To stop dancing around the point, your array example fails for one of two possible reasons, depending on what you're trying to do:

 

1. If your array is supposed to be part of the class, it fails because the array is not declared as a property of the class.

2. If your array is not supposed to be part of the class, it fails because you're not passing it to the object as a method argument.

 

Example of using the array as a property of the class:

<?php
   class Test
   {
      private $testArray = array('Hello', ' ', 'World'); //best to keep it private, as you shouldn't give the outside world direct access to class properties

      public function __construct()
      {
         $this->display();
      }

      public function display()
      {
         foreach($this->testArray as $value)
         {
            echo $value;
         }
      }
   }

   $myObj = new Test();
?>

 

Example of passing the array as an argument:

<?php
   $testArray = array('Hello', ' ', 'World');

   class Test
   {
      public function __construct($array)
      {
         $this->display($array);
      }

      public function display($array)
      {
         foreach($array as $value)
         {
            echo $value;
         }
      }
   }

   $myObj = new Test($testArray);
?>

 

Note: the examples I've written use PHP 5 syntax.

[percent20]

Finally figured out how to get it working.  Since it needs to be independent and global I had to use the global keyword inside the class to pull it into scope.  I didn't know about the global until yesterday. Until I can convince others here to do non-public global variables for config it has to be done this way

 

Thanks for the help.