DateVasc and Mask

DateVascAndMask.php

<?php 
    function DateVasc($data){
        if(count(explode("/",$data)) > 1){
            return str_replace('/','-',implode("-",array_reverse(explode("/",$data))));
        }elseif(count(explode("-",$data)) > 1){
            return str_replace('-','/',(implode("/",array_reverse(explode("-",$data)))));
        }
    }

    echo '';
    $dat ='1/11/2016';
    echo DateVasc($dat);

    echo '       ';
    $dat = '2090-12-02';
    echo DateVasc($dat);

    /// o codigo que eu fiz identifica o tipo da data e transforma no inverso.
?>

<?
    function mask($val, $mask)
    {
        $maskared = '';
        $k = 0;
        for($i = 0; $i<=strlen($mask)-1; $i++)
        {
            if($mask[$i] == '#')
            {
                if(isset($val[$k]))
                    $maskared .= $val[$k++];
            }
            else
            {
                if(isset($mask[$i]))
                    $maskared .= $mask[$i];
            }
        }
        return $maskared;
    }

    $cnpj = "11222333000199";
    $cpf = "00100200300";
    $cep = "08665110";
    $data = "10102010";

    echo mask($cnpj,'##.###.###/####-##');
    echo mask($cpf,'###.###.###-##');
    echo mask($cep,'#####-###');
    echo mask($data,'##/##/####');
?>