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-rw-r--r--README.markdown6
1 files changed, 6 insertions, 0 deletions
diff --git a/README.markdown b/README.markdown
index 8cb8fea..f8ff99c 100644
--- a/README.markdown
+++ b/README.markdown
@@ -489,6 +489,12 @@ Returns true if the variable passed to this function is an array.
- *Type*: rvalue
+is_bool
+--------
+Returns true if the variable passed to this function is a boolean.
+
+- *Type*: rvalue
+
is_domain_name
--------------
Returns true if the string passed to this function is a syntactically correct domain name.