Function for fill array_data for use with Form::select in Laravel

Arrays.php

<?php
class Arrays{
	/**
	* Sample $obj = Users::all();
	* @param  Object(Eloquent) $obj 
	* Key usage for assoc with value in the array $data
	* @param  string  $key
	* Value usage for fill array $data
	* @param  string  $value
	* Enable first element
	* @param  boolean $select
	* Parameter for first element in the array $data
	* @param  string  $text
	* Parameter for concat with value
        * @param  string  $concat
	* @return Array   $data
	* @author Flávio Henrique Ferreira <flaviometalvale@gmail.com>
	**/

	public static function montaCombobox( $obj, $key, $value, $select = FALSE, $text = 'Selecione', $concat = NULL)
	{
		$data = array();
		if($select){
			$data[''] = $text;
		}
		foreach($obj as $o){
			if( is_null($concat) ){
				$data[$o->{$key}] = $o->{$value};
			}else{
				$data[$o->{$key}] = $o->{$concat} . " - " . $o->{$value};
			}
		}
		return $data;
	}
}
/*Usage*/
$categories = Arrays::montaCombobox( Categories::select("id","description")->get() , "id", "description" , TRUE , "Select", "id");