Combine values in foreach to create drop down

[jarvis]

Hi All,

 

I hope someone can help. I currently have the following code:

		$all_categories = get_categories( $args );

        // display a message as the first option
        $choices = array(array('text' => 'Please Select A Category', 'value' => 0 ));

        foreach ($all_categories as $cat){
			if($cat->category_parent == 0){
				$category_id = $cat->term_id;						
            	$choices[] = array( 'text' => $cat->name, 'value' => $cat->slug, 'isSelected' => false );
			}
        }

        $field['choices'] = $choices;

As you can see, it loops through a list of results and this is used to construct a drop down

 

The issue I've got, it only returns the top level of categories. In order to get categories and sub categories I need to alter the code to the following:

$all_categories = get_categories( $args );
foreach ($all_categories as $cat) {
	if($cat->category_parent == 0) {
		$category_id = $cat->term_id;       
		echo $cat->name .'<br/>';

		$args2 = array(
			'taxonomy'     => $taxonomy,
			'child_of'     => 0,
			'parent'       => $category_id,
			'orderby'      => $orderby,
			'show_count'   => $show_count,
			'pad_counts'   => $pad_counts,
			'hierarchical' => $hierarchical,
			'title_li'     => $title,
			'hide_empty'   => $empty
		);
		$sub_cats = get_categories( $args2 );
		if($sub_cats) {
			foreach($sub_cats as $sub_category) {
				echo  '  '.$sub_category->name.'<br/>';
			}   
		}
	}       
}

However, I can't then add the code I need as I now have 2 foreach loops

 

Is there anyway around this?