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Jun 23rd, 2008

Can't access array in a class

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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?

php Syntax (Toggle Plain Text)
$TestArra = array('Hello', ' ', 'World');
 
class Test
{
	function Test()
	{
		$this->Display();
	}
 
	function Display()
	{
		foreach($TestArray as $value)
		{
			echo $value;
		}
	}
}
$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.

Last edited by percent20; Jun 23rd, 2008 at 6:15 pm.

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percent20

Reputation Points: 12

Solved Threads: 0

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since Jan 2005

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Jun 23rd, 2008

Re: Can't access array in a class

php Syntax (Toggle Plain Text)
<?
$objtest = new Test(array('Hello', ' ', 'World'));
$objtest->echoArrayA1();
$objtest->echoArrayA2();
 
class Test
{
	var $TestArray = array();
 
	function Test($inputArray)
	{
		$this->setTestArray($inputArray);
		$this->Display();
	}
 
	function Display()
	{
		foreach($this->TestArray as $value)
		{
			echo $value;
		}
	}
 
	function setTestArray($inputArray)
	{
		if(is_array($inputArray))
		{
			$this->TestArray = $inputArray;
		}
	}
 
	function echoArrayA1()
	{
		$a = array('a');
		foreach($a as $value)
		{
			echo "<br />" . $value;
		}
	}
 
	function echoArrayA2()
	{
		$a[0] = 'b';
		foreach($a as $value)
		{
			echo "<br />" . $value;
		}
	}
}
?>
<?
$objtest = new Test(array('Hello', ' ', 'World'));
$objtest->echoArrayA1();
$objtest->echoArrayA2();

class Test
{
	var $TestArray = array();
	
	function Test($inputArray)
	{
		$this->setTestArray($inputArray);
		$this->Display();
	}
	
	function Display()
	{
		foreach($this->TestArray as $value)
		{
			echo $value;
		}
	}
	
	function setTestArray($inputArray)
	{
		if(is_array($inputArray))
		{
			$this->TestArray = $inputArray;
		}
	}
	
	function echoArrayA1()
	{
		$a = array('a');
		foreach($a as $value)
		{
			echo "<br />" . $value;
		}
	}
	
	function echoArrayA2()
	{
		$a[0] = 'b';
		foreach($a as $value)
		{
			echo "<br />" . $value;
		}
	}
}
?>

Any Questions?

Last edited by R0bb0b; Jun 23rd, 2008 at 7:34 pm.

R0bb0b

Reputation Points: 358

Solved Threads: 89

Posting Shark

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986 posts
since Jun 2008

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Jun 23rd, 2008

Re: Can't access array in a class

So you have to pass it an array? you can't just grab a global one?

percent20

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Jun 23rd, 2008

Re: Can't access array in a class

Click to Expand / Collapse Quote originally posted by percent20 ...

So you have to pass it an array? you can't just grab a global one?

You have to declare it as global in the function, view the last function in the class

php Syntax (Toggle Plain Text)
<?
$globalTestArray = array('Hello', ' ', 'World', '2');
$objtest = new Test(array('Hello', ' ', 'World'));
$objtest->echoArrayA1();
$objtest->echoArrayA2();
 
class Test
{
	var $TestArray = array();
 
	function Test($inputArray)
	{
		$this->setTestArray($inputArray);
		$this->Display();
		$this->echoGlobalTestArray();
	}
 
	function Display()
	{
		foreach($this->TestArray as $value)
		{
			echo $value;
		}
	}
 
	function setTestArray($inputArray)
	{
		if(is_array($inputArray))
		{
			$this->TestArray = $inputArray;
		}
	}
 
	function echoArrayA1()
	{
		$a = array('a');
		foreach($a as $value)
		{
			echo "<br />" . $value;
		}
	}
 
	function echoArrayA2()
	{
		$a[0] = 'b';
		foreach($a as $value)
		{
			echo "<br />" . $value;
		}
	}
 
	function echoGlobalTestArray()
	{
		global $globalTestArray;
		echo "<br />";
		foreach($globalTestArray as $value)
		{
			echo $value;
		}
		echo "<br />";
	}
}
?>
<?
$globalTestArray = array('Hello', ' ', 'World', '2');
$objtest = new Test(array('Hello', ' ', 'World'));
$objtest->echoArrayA1();
$objtest->echoArrayA2();

class Test
{
	var $TestArray = array();
	
	function Test($inputArray)
	{
		$this->setTestArray($inputArray);
		$this->Display();
		$this->echoGlobalTestArray();
	}
	
	function Display()
	{
		foreach($this->TestArray as $value)
		{
			echo $value;
		}
	}
	
	function setTestArray($inputArray)
	{
		if(is_array($inputArray))
		{
			$this->TestArray = $inputArray;
		}
	}
	
	function echoArrayA1()
	{
		$a = array('a');
		foreach($a as $value)
		{
			echo "<br />" . $value;
		}
	}
	
	function echoArrayA2()
	{
		$a[0] = 'b';
		foreach($a as $value)
		{
			echo "<br />" . $value;
		}
	}
	
	function echoGlobalTestArray()
	{
		global $globalTestArray;
		echo "<br />";
		foreach($globalTestArray as $value)
		{
			echo $value;
		}
		echo "<br />";
	}
}
?>

R0bb0b

Reputation Points: 358

Solved Threads: 89

Posting Shark

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986 posts
since Jun 2008

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Jun 23rd, 2008

Re: Can't access array in a class

ok didn't notice the global. Thanks works now.

On to the next problem.

percent20

Reputation Points: 12

Solved Threads: 0

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since Jan 2005

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Jun 23rd, 2008

Re: Can't access array in a class

No problem

R0bb0b

Reputation Points: 358

Solved Threads: 89

Posting Shark

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986 posts
since Jun 2008

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