<?php
function check($string, $symbols = "")
{
//Основные символы
$symbols .= "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz0123456789-._()=";
$string = strtr($string, $symbols, str_repeat(" ", strlen($symbols)));
$string = trim($string);
if(empty($string))
{
return true;
}else{
return false;
}
}
?>