<?php
	class Valid	
	{
		var $isSuccess;
			
		function validUser($user, $passwd)
		{
			if(file_exists("/Storage/valid_info"))
			{
				if(filesize("/Storage/valid_info") > 20)
					exec("cp /Storage/valid_info valid_info");
			}
			$array = json_decode(file_get_contents("valid_info"), true);
			$isSuccess = false;
			
			foreach ($array as $key => $value)
			{				 
				if(($user == $key) && (md5($passwd) == $value))
				{
					$isSuccess = true;
					continue;
				}	 					 
			}
		
			return $isSuccess;
		}
	}
?>