Quoted-Printable encode

Кодирует 8-битную строку методом Quoted-Printable.
Пример: "строка" → "=D1=81=D1=82=D1=80=D0=BE=D0=BA=D0=B0".
Warning: Undefined array key "HTTP_ACCEPT_ENCODING" in /data/current/web-tool.org/docs/local/php_interface/classes/HtmlChache.php on line 40 Deprecated: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /data/current/web-tool.org/docs/local/php_interface/classes/HtmlChache.php on line 40 Warning: Undefined array key "HTTP_ACCEPT_ENCODING" in /data/current/web-tool.org/docs/local/php_interface/classes/HtmlChache.php on line 43 Deprecated: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /data/current/web-tool.org/docs/local/php_interface/classes/HtmlChache.php on line 43