Super noobie OO help!

[sw9]

Hi,

 

I am just starting to learn OO PHP, and I'm struggling with how to deal with arrays. I am sure this code will look kinda ridiculous to many of you, but I am just having a hard time wrapping my head around everything. So for my first project I decided to try to build a very simple table. However, I can't get the class to recognize the array I am trying to put into a function, and I always get this as my output:

 

Warning: Invalid argument supplied for foreach() in /home/retnkes9/public_html/westford-farms.php on line 185

Westford

Farm

Series

 

I would greatly appreciate some guidance on what I am doing so totally wrong! Here is my code:

 

<?php 

class Page {
        public $page;
        public $cols = array();

        function Page(){
		$this->page = '';
		$this->cols = $array; 
		}

      
      function addCaption($desc){
   		$this->page .= <<<EOD
  		<table class="new" summary="Videos from $desc">
  		<caption class="new">$desc</caption>
EOD;
 } 
       
// This is the function I am having trouble with....
      function addCols($cols) {
	$this->page .= <<<EOD
	<tr class="new">
EOD;

foreach($this->cols as $key=>$value){
  $this->page .= <<<EOD
<th scope="col" class="new">$value</th>
EOD;
	}

$this->page .= <<<EOD
</tr>
EOD;
}

function get(){
   return $this->page;
}

}


$wf = new Page();

// Add the table caption and rows
$wf->addCaption('Westford Farm Series');
$wf->addCols('Episode', 'Production Date', 'Video-On-Demand');

echo $wf->get(); 

[BlueSkyIS]

how i might change things:

 

function addCols($cols) {
	$this->page .= "<tr class='new'>;

foreach($cols as $value){
  $this->page .= "<th scope='col' class='new'>$value</th>";
	}

$this->page .= "</tr>";
}

$wf->addCols(array('Episode', 'Production Date', 'Video-On-Demand'));

[DyslexicDog]

Are developing in php4 or php5?

[sw9]

BlueSky,

 

Thanks; that works great. Much appreciated.

 

DyslexicDog I am on PHP 5; is there something glaringly bad in my code that has to do with 4?

[DyslexicDog]

function Page(){
		$this->page = '';
		$this->cols = $array; 
		}

 

Should be...

 

function __construct(){
		$this->page = '';
		$this->cols = $array; 
		}

 

Also in that same function you call a variable to doesn't exist anywhere else in your code

 

$this->cols = $array;

 

Can you explain what you are trying to do there?

 

 

[sw9]

Thanks for the heads up on the __construct().

 

$cols is an array I am populating when I call the addCols() method from this class...it seems to be working well now, but if I'm making more noobie errors I am happy to learn about them!