validate

Validate.php

class Validate
{
	private static function clean($input = array())
	{
		$clean = array();
		foreach ($input as $key => $value) {
			$clean[$key] = htmlentities(mb_convert_encoding($value, 'UTF-8', 'UTF-8'), ENT_QUOTES, 'UTF-8');
		}
		return $clean;
	}

	public static function textField($input = array()) 
	{
		$error = null;
		$clean = self::clean($input);
		
		foreach ($clean as $key => $value) {
			if (empty($value)) { 
				$error = $key . '.empty';
			}
		}
		return $error;

	}
}