<?php

class p4field
{

	public static function isyes($v)
	{
		$v = mb_strtolower(trim((string)$v));
		return($v=='1' || $v=='y' || $v=='yes' || $v=='o' || $v=='oui' || $v=='on' || $v=='true');
	}
	public static function isno($v)
	{
		$v = mb_strtolower(trim((string)$v));
		return($v=='0' || $v=='n' || $v=='no'             || $v=='non' || $v='off' || $v=='false');
	}
	
}