Php subarrays code adds extra values

Question

This is the php code:

$slavesites = array(
    'Category1' => array('Anchor1', 'http://www.test1.com'),
    'Category2' => array('Anchor2', 'http://www.test2.com')
);

foreach($slavesites as $category => $slavesite){
    echo $category;
    foreach($slavesite as $anc => $url){             
        echo $anc.'<br>'; 
        echo $url.'<br>'; 
    }
}

The problem is when I run the code, i get a "0" and "1":

Category10 **--- WHERE DOES THE 0 COME FROM?**
Anchor1
1 **---- WHERE DOES THE 1 COME FROM?**
http://www.test1.com
Category20 --- WHERE DOES THE 0 COME FROM?
Anchor2
1 ---- WHERE DOES THE 1 COME FROM?
http://www.test2.com

Ty!:) Hope you can help...

Answer 1

If you want to loop through your array like that, you have to store the elements as key-value pairs:

$slavesites = array(
  'Category1' => array('Anchor1' => 'http://www.test1.com'),
  'Category2' => array('Anchor2' => 'http://www.test2.com')
);

The 0 and the 1 are shown because you don't have keys defined and it therefores uses numerical keys.

Answer 2

second foreach iterates over array without proper indices set. that way default indices (0,1,2,...) are used and hence the number in output.

eg actually your definition is like this:

$slavesites = array(
    'Category1' => array(0 => 'Anchor1', 1 => 'http://www.test1.com'),
    'Category2' => array(0 => 'Anchor2', 1 => 'http://www.test2.com')
);

you should use 'list' instead of 'foreach' in the inner loop:

list($anc, $url) = $slavesite;