Use mb_strcut (#1996)

* Use mb_strcut

Avoid cutting in the middle of a multi-byte UTF-8 character

* Forgotten php5-*

* Typo

* Whitespace

* More mb_strcut

1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index 7d6c51338..4567c50c6 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ We are a friendly community.
 * A web server: Apache2 (recommended), nginx, lighttpd (not tested on others)
 * PHP 5.3.8+ (PHP 5.4+ recommended, and PHP 5.5+ for performance, and PHP 7 for even higher performance)
 	* Required extensions: [cURL](https://secure.php.net/curl), [DOM](https://secure.php.net/dom), [XML](https://secure.php.net/xml), [session](https://secure.php.net/session), [ctype](https://secure.php.net/ctype), and [PDO_MySQL](https://secure.php.net/pdo-mysql) or [PDO_SQLite](https://secure.php.net/pdo-sqlite) or [PDO_PGSQL](https://secure.php.net/pdo-pgsql)
-	* Recommended extensions: [JSON](https://secure.php.net/json), [GMP](https://secure.php.net/gmp) (for API access on platforms < 64 bits), [IDN](https://secure.php.net/intl.idn) (for Internationalized Domain Names), [mbstring](https://secure.php.net/mbstring) and/or [iconv](https://secure.php.net/iconv) (for charset conversion), [ZIP](https://secure.php.net/zip) (for import/export), [zlib](https://secure.php.net/zlib) (for compressed feeds)
+	* Recommended extensions: [JSON](https://secure.php.net/json), [GMP](https://secure.php.net/gmp) (for API access on platforms < 64 bits), [IDN](https://secure.php.net/intl.idn) (for Internationalized Domain Names), [mbstring](https://secure.php.net/mbstring) (for Unicode strings), [iconv](https://secure.php.net/iconv) (for charset conversion), [ZIP](https://secure.php.net/zip) (for import/export), [zlib](https://secure.php.net/zlib) (for compressed feeds)
 * MySQL 5.5.3+ (recommended), or SQLite 3.7.4+, or PostgreSQL 9.2+
 * A recent browser like Firefox / IceCat, Internet Explorer 11 / Edge, Chromium / Chrome, Opera, Safari.
 	* Works on mobile