<?php
$str='Один. Два. Три.';
foreach ($str as $key=>$val){
echo $val . '.';
}
echo "\n";
$str='Один. Два. Три.';
$str = $str;
foreach ($str as $key=>$val){
echo $val . '.';
}
PD9waHAKCiRzdHI9J9Ce0LTQuNC9LiDQlNCy0LAuINCi0YDQuC4nOwokc3RyPWV4cGxvZGUoJy4nLCAkc3RyKTsKa3Jzb3J0KCRzdHIpOyAKJHN0ciA9IGFycmF5X2ZpbHRlcigkc3RyKTsKZm9yZWFjaCAoJHN0ciBhcyAka2V5PT4kdmFsKXsKICAgIGVjaG8gJHZhbCAuICcuJzsKfQoKZWNobyAiXG4iOwoKJHN0cj0n0J7QtNC40L0uINCU0LLQsC4g0KLRgNC4Lic7CiRzdHI9ZXhwbG9kZSgnLicsICRzdHIpOwprcnNvcnQoJHN0cik7IAokc3RyID0gJHN0cjsKZm9yZWFjaCAoJHN0ciBhcyAka2V5PT4kdmFsKXsKICAgIGVjaG8gJHZhbCAuICcuJzsKfQo=