Looping from an array display a non wanted character with PHP

I have this array in PHP:

$items = array(
    array(
        "info" => "This is my info",
        "colors" => array(
            "type" => "block",
            array(
                "name" => "Red",
                "ref" => "red"
            ),
            array(
                "name" => "Blue",
                "ref" => "blue"
            ),
        ),
    ),
);

I want to loop into the color array like this:

foreach ($items as $item) {
    foreach ($item['colors'] as $color) {
        $color['name'];
    }
}

The problem, is the first result is b from block.

How can I change this behavior ?

Thanks.

Answer

You can check whether the name element exists in the $color value:

foreach ($items as $item) {
    foreach ($item['colors'] as $color) {
        if (isset($color['name'])) {
            $name = $color['name'];
            // do something with it
        }
    }
}