<?php
/**
 * Validation Functions
 *
 * Contains all the system validation.
 *
 * @author Eric Lamb <eric@ericlamb.net>
 * @version 1.0
 * @copyright	@author
 * @filesource
 * @link http://blog.ericlamb.net
 * @copyright 2005-2009 Eric Lamb
 */
 
/**
 * Ensures phone numbers are in the proper format
 *
 * @param   string  $element_name	name of form field to check
 * @param   string  $element_value	value of form field to check
 * @return  bool
 */
function CheckUSPhoneNum($element_name, $element_value)
{ 
	$PhoneNumber = ereg_replace("[^0-9]", "", $element_value); // Strip out non-numerics
	if(ereg("^([2-9][0-9]{2})([2-9][0-9]{2})([0-9]{4})$", $PhoneNumber, $NumberParts)){
		return "(" . $NumberParts[1] . ") " . $NumberParts[2] . "-" . $NumberParts[3];
	} else {
		return false;
	}
}
 
/**
 * Looks up a domain and makes sure it's valid; only works on *nix
 *
 * @param   string  $type	Type of banning to check
 * @param   string  $data	The cooresponding data to check
 * @return  bool
 */
function FormDomainLookup($element, $value, $arg) { 
    $value = str_replace('http://','',$value);
	exec("host -t ns $value",$hasil); 
    if (ereg("host $value not found.",strtolower(trim($hasil[0])))) { 
        return false; 
    } else { 
        return true; 
    }
}
 
/**
 * Makes sure an IP address is valid
 *
 * @param   string  $element_name	name of form field to check
 * @param   string  $element_value	IP Address to check
 * @return  bool
 */
function CheckIP ($element_name,$element_value) {
 
	$ip = $element_value;
	if (($longip = ip2long($ip)) !== false)
	{
		if ($ip == long2ip($longip))
		{
			return true;
		} else {
			return false;
		}
	} else {
		return false;
	} 
}
 
/**
 * Makes sure a "date" isn't set to a past date.
 *
 * @param   string  $element_name	name of form field to check
 * @param   string  $element_value	Date to Check
 * @return  bool
 */
function StopPastDate($element_name, $element_value){
	global $vars, $now;
 
	//check that it's a valid date first
	$temp = explode('-', $element_value);
	if(!checkdate($temp['1'],$temp['2'],$temp['0'])){
		return false;
	}
 
	//now make sure the date isn't in the past.
	if($element_value < $now){
		return false;
	} else {
		return true;
	}
 
}
 
/**
 * Makes sure a "date" is a valid MYSQL format.
 *
 * @param   string  $element_name	name of form field to check
 * @param   string  $element_value	Date to Check
 * @return  bool
 */
function ValidateMysqlDate($element_name, $element_value){
	global $vars, $now;
 
	//check that it's a valid date first
	$temp = explode('-', $element_value);
	if(!checkdate($temp['1'],$temp['2'],$temp['0'])){
		return false;
	}
	return true;
}
 
/**
 * Makes sure an integer is positive
 *
 * @param   string  $element_name	name of form field to check
 * @param   string  $element_value	Int to Check
 * @return  bool
 */
function IsIntPositive($element_name, $element_value){
 
	if(!is_numeric($element_value){
		$element_value = (int)$element_value;
	}
	if($element_value < 1){
		return FALSE;
	}
	//exit;
 
	return TRUE;
}
 
/**
 * Makes sure an integer isn't a decimal
 *
 * @param   string  $element_name	name of form field to check
 * @param   string  $element_value	Int to Check
 * @return  bool
 */
function IsIntDecimal($element_name, $element_value){
 
	if(!is_numeric($element_value){
		$element_value = (int)$element_value;
	}
 
	if(strpos($element_value,'.') === FALSE){
		return TRUE;
	}
	//exit;
 
	return FALSE;
}
 
/**
 * Makes sure a URL is valid
 *
 * @param   string  $element_name	name of form field to check
 * @param   string  $element_value	URL to Check
 * @return  bool
 */
function IsURLValid($element_name,$element_value){
	if (preg_match("/^(http(s?):\/\/|ftp:\/\/{1})((\w+\.){1,})\w{2,}$/i", $element_value)) {
		return TRUE;
	} else {
		return FALSE;
	}
}
 
/**
 * Makes sure at least one file was uploaded
 *
 * @param   string  $element_name	name of form field to check
 * @param   string  $element_value	
 * @return  bool
 */
function EnsureUploadedFile($element_name, $element_value){
	foreach($_FILES AS $name => $data){
		if($data['error'] == '0'){
			return TRUE;
		}
	}
	return FALSE;
}
?>