task_type_save_custom_field_builder

/**
	 * @param $post_ID
	 */
	public static function task_type_save_custom_field_builder( $post_ID ) {
		$boxes_arr = [];
		// Loop through the post keys
		foreach ( $_POST as $pk => $d ) {
			// Find a field
			if ( stripos( $pk, '-fields-' ) ) {
				// Get form box number
				$fbn = self::task_type_save_get_field_builder_box_fbn( $pk );
				// Get the field type
				$type = self::task_type_save_get_field_builder_field_type( $pk );
				// Get the field count
				$fc = self::task_type_save_get_field_builder_field_count( $pk );

				// Get the field name
				if ( stripos( $pk, 'name' ) ) {
					$name = $d;
				}
				// Get the field description
				if ( stripos( $pk, 'description' ) ) {
					$description = $d;
				}

				// If this is a select option
				if ( stripos( $pk, 'option_fields' ) ) {
	                // Set Fields
	                $boxes_arr[ $fbn ]['fields'][ $fc ]['type']        = $type;
	                $boxes_arr[ $fbn ]['fields'][ $fc ]['name']        = $name;
	                $boxes_arr[ $fbn ]['fields'][ $fc ]['description'] = $description;
					$boxes_arr[ $fbn ]['fields'][ $fc ]['options']     = $d;
                }else {
	                // Set Fields
	                $boxes_arr[ $fbn ]['fields'][ $fc ]['type']        = $type;
	                $boxes_arr[ $fbn ]['fields'][ $fc ]['name']        = $name;
	                $boxes_arr[ $fbn ]['fields'][ $fc ]['description'] = $description;
                }

			} else // Find the box name
				if ( preg_match( '/form_box_[0-9]+-name/', $pk ) ) {
					// Get form box number
					$fbn                       = self::task_type_save_get_field_builder_box_fbn( $pk );
					$boxes_arr[ $fbn ]['name'] = $d;
				} else // Find the box description
					if ( preg_match( '/form_box_[0-9]+-description/', $pk ) ) {
						// Get form box number
						$fbn = self::task_type_save_get_field_builder_box_fbn( $pk );
						$boxes_arr[ $fbn ]['description'] = $d;
                }
		}

		// Reindex array to begin at 1 and remove multiple selects
		foreach ($boxes_arr as $key => $box_arr){
		    // Loop through fields and remove selects with no options
			foreach ( $boxes_arr[$key]['fields'] as $fk => $field ) {
			    // If select
                if($field['type'] === 'select'){
                    // Check for options
                    if(!array_key_exists('options', $field)){
                        // No options so unset this select
                        unset($boxes_arr[$key]['fields'][$fk]);
                    }
                }
            }
			$boxes_arr[$key]['fields'] = array_values($boxes_arr[$key]['fields']);
            array_unshift($boxes_arr[$key]['fields'], "phoney");
			unset($boxes_arr[$key]['fields'][0]);
        }

        delete_post_meta($post_ID, self::PLUGIN_PREFIX . 'task_type_boxes');
		update_post_meta( $post_ID, self::PLUGIN_PREFIX . 'task_type_boxes', $boxes_arr );
	}