Toolbox Filter Example - advanced filter

toolbox_example_filter_advanced.php

<?php

add_filter( 'toolbox/helpers/get_acf_field/type=checkbox'       ,       'return_checkbox' 		, 20, 5 );

function return_checkbox( $string , $field_object , $value , $atts = null , $postid = null ) {

	if (!$atts['display_as']) return $string;

	$return = array();

	foreach ($field_object['choices'] as $key=>$choice ) {
		if (!is_array($value)) break;
		if ( in_array( $key , $value )) array_push( $return,  "{$choice}" );
	}
	switch ($atts['display_as']){
		case "list":
			if (!is_array($value)) return $string;
			return'<ul><li>' . implode( '</li><li>' , $return ) . '</li></ul>';
		break;
		case "inline":
			return implode( ',' , $return );
		break;
		case "returned":
			return implode( '<br>' , $return );
		break;
		case "with_images":

			$on_image = (strpos( $atts['on_image'], 'http') !== false )?$atts['on_image']:wp_get_attachment_image_url( $atts['on_image'] , 'full' );
			$off_image = (strpos( $atts['off_image'], 'http') !== false )?$atts['off_image']:wp_get_attachment_image_url( $atts['off_image'] , 'full' );

			// start the list
			$return = '<ul style="list-style-type:none">';
			foreach ($field_object['choices'] as $key=>$choice ) {
				if ( is_array($value) && in_array( $key , $value )) {
					$return .= sprintf(  '<li><img src=\'%s\'> <span class="checkbox--value">%s</span></li>' , $on_image, $choice );
				} else {
					$return .= sprintf(  '<li><img src=\'%s\'> <span class="checkbox--value">%s</span></li>' , $off_image, $choice );

				}
			}
			$return .= '</ul>';

			return $return;
		break;
	}
}