validate.php

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<?php
class Validate
{
        const IS_REQUIRED = '/[^\\s]/';
         
        /*
         * El valor deber ser solo letras y números
         */
        const IS_ALPHANUM = '/^[\p{Ll}\p{Lm}\p{Lo}\p{Lt}\p{Lu}\p{Nd}]+$/mu';
         
         
         
    public static $error = NULL;
    public static $regex = NULL;
    public static function int ($check)
    {
        return filter_var($check, FILTER_VALIDATE_INT);
    }
    public static function maxLength($value, $max, $min = null)
    {
        $length = strlen($value);
        if($min and $length < $min){
                        return false;
                }
        return ($length <= $max);
    }
    public static function range($value, $min=0, $max=NULL)
    {
        $int_options = array('options'=> array('min_range'=>$min, 'max_range'=>$max));
        return filter_var($value, FILTER_VALIDATE_INT, $int_options);
    }

    public static function inList($value, $list)
    {
        return in_array($check, $list);
    }
    
    public static function mail ($mail)
    {
        return filter_var($mail, FILTER_VALIDATE_EMAIL);
    }
    public static function url ($url)
    {
        return filter_var($url, FILTER_VALIDATE_URL, FILTER_FLAG_HOST_REQUIRED);
    }
    public static function ip ($ip)
    {
        return filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
    }
    public static function required($check)
    {
        return !empty($check) && $check!='0';
    }
    public static function alphanum ($string)
    {
        return self::pattern($string, self::IS_ALPHANUM);
    }
    public static function date ($value, $format = 'd-m-y')
    {
        // busca el separador removiendo los caracteres de formato
        $separator = str_replace(array('d' , 'm' , 'y'), '', $format);
        $separator = $separator[0]; // el separador es el primer caracter
        if ($separator && substr_count($value, $separator) == 2) {
            switch (str_replace($separator, '', $format)) {
                case 'dmy':
                    list ($day, $month, $year) = explode($separator, $value);
                    break;
                case 'mdy':
                    list ($month, $day, $year) = explode($separator, $value);
                    break;
                case 'ymd':
                    list ($year, $month, $day) = explode($separator, $value);
                    break;
                default:
                    return false;
            }
            if (ctype_digit($month) && ctype_digit($day) && ctype_digit($year)) {
                return checkdate($month, $day, $year);
            }
        }
        return false;
    }
    public static function pattern ($check, $regex)
    {
        return filter_var($check, FILTER_VALIDATE_REGEXP, array('options' => array('regexp' => $regex)));
    }
    
    public static function decimal($value, $decimal = ',')
    {
                return filter_var($value, FILTER_VALIDATE_FLOAT, array('options' => array('decimal' => $decimal)));
        }
}