echo a variable from a multidimentional array outside a function

Question

The code below works for a string value but not when I try to access the variable directly. The data being accessed is a table at http://webrates.truefx.com/rates/connect.html?f=html My code strips it of tags and put it in an array $row0 And puts it in a function. But I can't get it out. The function is simplified for this question. I intend to concatenate some of the variables inside the function once I find out what I'm doing wrong.

$row0 = array(); 
include "scrape/simple_html_dom.php";
$url = "http://webrates.truefx.com/rates/connect.html?f=html";
$html = new simple_html_dom();
$html->load_file($url);
foreach ($html->find('tr') as $i => $row) {
    foreach ($row->find('td') as $j => $col) {
        $row0[$i][$j]= strip_tags($col);
    }
}

myArray($row0); //table stripped of tags

function myArray($arr) {
    $a = 'hello';         //$arr[0][0]; HELLO will come out but not the variable
    $b = $arr[1][0];
    $r[0] = $a;
    $r[1] = $b;
    //echo $r[1]; If the //'s are removed one can see the proper value here but not outside the function.
    return $r;
}

$arrayToEcho = myArray($arr);

echo $arrayToEcho[0]; // will echo "first"

I have tried all the suggestions from here:

http://stackoverflow.com/questions/3451906/multiple-returns-from-function
http://stackoverflow.com/questions/5692568/php-function-return-array

Suggestion appreciated please and more info available if required. Thank you very much for viewing.

Answer 1

You need to get the innertext of $col in your loop. Like this:

$row0[$i][$j]= $col->innertext;

The next thing is:

myArray($row0);

This call will correctly return the parsed array; try echoing it and you'll see. But when you do this:

$arrayToEcho = myArray($arr);

...you're referencing to $arr which is a local variable (a parameter, actually) inside your function myArr. So what you probably meant was this:

$arrayToEcho = myArray($row0);

Hope this helps!

UPDATE

Look, I show you what happens when you call a function: