class validator

class validator{
    function is_String($string) {
        $stripStr = preg_replace('/\s/', '', $string);
        return preg_match("/^([-A-z0-9_.,&']){3,100}$/", $stripStr);
        //return !is_string($stripStr)?(TRUE):(FALSE);
    }
    
    function is_Numeric($int) {
        return is_numeric($int)?(TRUE):(FALSE);
    }
    
    function is_username($username) {
        return preg_match("/^([-A-z0-9_.]){3,20}$/", $username);
    }
    
    function is_password($password) {
        //Password must be at least 7 characters mixed with at least one lowercase, uppercase letter and digit
        //return preg_match("/^.*(?=.{7,})(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).*$/", $password);
        
        //Password must be at least 7 letters mixed with digits and symbols
        return preg_match("/^.*(?=.{7,})(?=.*\d)([a-zA-Z]).*$/", $password);
    }
    
    function cmp_string($string1,$string2) {
        return (strcmp($string1, $string2)==0)?(TRUE):(FALSE);
    }
    
    function is_email($email) {
        return filter_var($email, FILTER_VALIDATE_EMAIL)?(TRUE):(FALSE);
    }        
    
    function is_phone($phone) {
        $stripped = preg_replace("/(\(|\)|\-|\+)/","",preg_replace("/([  ]+)/","",$phone));
        return (!is_numeric($stripped) || ((strlen($stripped)<7) || (strlen($stripped)>13)))?FALSE:TRUE;
    }
    
    function is_zipcode($postal_code, $country_code="US") {
         
        $ZIPREG=array(
            "US"=>"^\d{5}([\-]?\d{4})?$",
            "UK"=>"^(GIR|[A-Z]\d[A-Z\d]??|[A-Z]{2}\d[A-Z\d]??)[ ]??(\d[A-Z]{2})$",
            "DE"=>"\b((?:0[1-46-9]\d{3})|(?:[1-357-9]\d{4})|(?:[4][0-24-9]\d{3})|(?:[6][013-9]\d{3}))\b",
            "CA"=>"^([ABCEGHJKLMNPRSTVXY]\d[ABCEGHJKLMNPRSTVWXYZ])\ {0,1}(\d[ABCEGHJKLMNPRSTVWXYZ]\d)$",
            "FR"=>"^(F-)?((2[A|B])|[0-9]{2})[0-9]{3}$",
            "IT"=>"^(V-|I-)?[0-9]{5}$",
            "AU"=>"^(0[289][0-9]{2})|([1345689][0-9]{3})|(2[0-8][0-9]{2})|(290[0-9])|(291[0-4])|(7[0-4][0-9]{2})|(7[8-9][0-9]{2})$",
            "NL"=>"^[1-9][0-9]{3}\s?([a-zA-Z]{2})?$",
            "ES"=>"^([1-9]{2}|[0-9][1-9]|[1-9][0-9])[0-9]{3}$",
            "DK"=>"^([D-d][K-k])?( |-)?[1-9]{1}[0-9]{3}$",
            "SE"=>"^(s-|S-){0,1}[0-9]{3}\s?[0-9]{2}$",
            "BE"=>"^[1-9]{1}[0-9]{3}$"
        );
         
        if ($ZIPREG[$country_code]) {
         
            if (!preg_match("/".$ZIPREG[$country_code]."/i",$postal_code)){
                //Validation failed, provided zip/postal code is not valid.
                return false;
            } else {
                //Validation passed, provided zip/postal code is valid.
                return true;
            }
         
        } else {         
            //Validation not available
            return false;         
        }
    }
    
    function is_date($month, $day, $year) {
        return checkdate($month, $day, $year);
    }
    
    function is_url($url) {
        return filter_var($url, FILTER_VALIDATE_URL)?(TRUE):(FALSE); 
  }
    
    function is_host($host) {
         //mail.xyz.com
         $urlregex = "/^[a-z0-9+\$_-]+(\.[a-z0-9+\$_-]+)*(\.[a-z]{2,4})$/";
         
         return preg_match($urlregex, $host)?TRUE:FALSE; 
    }
    
    function is_port($port){
        return preg_match("/^([0-9]){2,4}$/", $port);
    }
    function is_ip($ip) {
        return filter_var($ip, FILTER_VALIDATE_IP)?(TRUE):(FALSE); 
    }
}