<?
// подключаем конфиг
require_once "config.class.php";

    class Check {
        private $config;
        
        public function __construct(){
            $this->config = new Config();
        }
        
        public function ts($ts){
            return $this->isIntNumber($ts);
        }
    
        public function id($id){
            if(!$this->isIntNumber($id)) return false;
            if($id <= 0) return false;
            elseif($id > 0) return true;
        }
    
        public function oneOrZero($number){
            if(!$this->isIntNumber($number)) return false;
            if(($number != 0) && ($number != 1)) return false;
            return true;
        }
        
        public function noNegativeInteger($number){
            if(!$this->isIntNumber($number)) return false;
            return $number >= 0;
        }
        
        public function count($number){
            if(!$this->noNegativeInteger($number)) return false;
            return true;
        }
        
        public function offset($number){
            return $this->isIntNumber($number);
        }
        
        public function name($name){
            if(!$this->isString($name, $this->config->nameMinLen, $this->config->nameMaxLen)) 
                return false;
   
            if($this->quotes($name)) return false;
            return true;
        }
        
        public function text($text, $empty = false){
            if(($text == "") && ($empty)) return true; 
            return $this->isString($text, $this->config->minText, $this->config->maxText);
        }
        
        public function price($data){
            if(!is_numeric($data)) return false;
            return $data >= 0;
        }
        
        public function phone($phone){
            return preg_match("/^\+?(\d){4,13}$/", $phone); // +380931234212
        }
        
        public function email ($email){
            if($this->quotes($email)) return false;
            return preg_match("/^[a-z0-9]+[a-z0-9\._-]*[a-z0-9]+@([a-z0-9]+[a-z0-9-]\.)*[a-z]{2,}$/i", $email);
        }
        
        public function ids($ids){
            if(!is_string($ids)) return false;
            return preg_match("/^(\d,)*(\d){1}$/", $ids);
        }
        
        private function quotes($text){
            $quotes = array("\"","'", "`", "&quot;", "&apos;", "&quot", "&apos");
            foreach($quotes as $key => $value)
                if(strpos($text, $value) !== false)
                    return true;
            return false;
        }
        
        private function isString($text, $min_lenght, $max_lenght){
            if(!is_string($text)) return false;
            if(strlen($text) < $min_lenght) return false;
            if(strlen($text) > $max_lenght) return false;
            return true;
        }
        
        private function isIntNumber($number){
            if(!is_int($number) && (!is_string($number))) return false;
            return preg_match("/^-?(([1-9][0-9]*)|(0))$/", $number);
        }
        
    }
?>