Added alpha, and sha1 string types to random_string() in the String Helper.
diff --git a/user_guide/helpers/string_helper.html b/user_guide/helpers/string_helper.html
index 36fa40f..b799390 100644
--- a/user_guide/helpers/string_helper.html
+++ b/user_guide/helpers/string_helper.html
@@ -74,13 +74,15 @@
<p>The first parameter specifies the type of string, the second parameter specifies the length. The following choices are available:</p>
-
+ alpha, alunum, numeric, nozero, unique, md5, encrypt and sha1
<ul>
-<li><strong>alnum</strong>: Alpha-numeric string with lower and uppercase characters.</li>
-<li><strong>numeric</strong>: Numeric string.</li>
-<li><strong>nozero</strong>: Numeric string with no zeros.</li>
-<li><strong>unique</strong>: Encrypted with MD5 and uniqid(). Note: The length parameter is not available for this type.
-Returns a fixed length 32 character string.</li>
+ <li><strong>alpha</strong>: A string with lower and uppercase letters only.</li>
+ <li><strong>alnum</strong>: Alpha-numeric string with lower and uppercase characters.</li>
+ <li><strong>numeric</strong>: Numeric string.</li>
+ <li><strong>nozero</strong>: Numeric string with no zeros.</li>
+ <li><strong>unique</strong>: Encrypted with MD5 and uniqid(). Note: The length parameter is not available for this type.
+ Returns a fixed length 32 character string.</li>
+ <li><strong>sha1</strong>: An encrypted random number based on <kbd>do_hash()</kbd> from the <a href="security_helper.html">security helper</a>.</li>
</ul>
<p>Usage example:</p>