diff --git a/appendices/migration85/new-functions.xml b/appendices/migration85/new-functions.xml
new file mode 100644
index 000000000000..790a57644269
--- /dev/null
+++ b/appendices/migration85/new-functions.xml
@@ -0,0 +1,34 @@
+
+
+ New Functions
+
+
+ Core
+
+
+
+ clamp
+
+
+
+
+
diff --git a/reference/array/versions.xml b/reference/array/versions.xml
index 39a5e36c7732..d6e72616b30b 100644
--- a/reference/array/versions.xml
+++ b/reference/array/versions.xml
@@ -64,6 +64,7 @@
+
diff --git a/reference/math/functions/clamp.xml b/reference/math/functions/clamp.xml
new file mode 100644
index 000000000000..111670f5e0de
--- /dev/null
+++ b/reference/math/functions/clamp.xml
@@ -0,0 +1,151 @@
+
+
+
+
+ clamp
+ Return the given value if in range, else return the nearest bound
+
+
+ &reftitle.description;
+
+ mixedclamp
+ mixedvalue
+ mixedmin
+ mixedmax
+
+
+ Return the given value if in range of min and max.
+ Else if it's lower than min, return min.
+ Else return max.
+
+
+
+ Values of different types will be compared using the
+ standard comparison rules. For instance, a non-numeric string will be
+ compared to an int as though it were 0, but multiple non-numeric
+ string values will be compared alphanumerically. The actual value returned will be of the
+ original type with no conversion applied.
+
+
+
+
+ Be careful when passing arguments of different types because
+ clamp can produce unpredictable results.
+
+
+
+
+ &reftitle.parameters;
+
+
+
+ value
+
+
+ Any comparable
+ value to be clamped between min and max.
+
+
+
+
+ min
+
+
+ A comparable minimum to limit
+ the value to.
+
+
+
+
+ max
+
+
+ A comparable maximum to limit
+ the value to.
+
+
+
+
+
+
+
+ &reftitle.returnvalues;
+
+ clamp returns the parameter value if
+ considered "between" min and max according to standard
+ comparisons.
+
+
+ If value is NAN, then the returned value will also be
+ NAN.
+
+
+
+
+ &reftitle.errors;
+
+ If min is greater than max,
+ clamp throws a ValueError.
+
+
+ If min or max is NAN,
+ clamp throws a ValueError.
+
+
+
+
+ &reftitle.examples;
+
+
+ Example uses of <function>clamp</function>
+
+format('Y-m-d'), PHP_EOL; // 2025-08-15
+?>
+]]>
+
+
+
+
+
+
+ &reftitle.seealso;
+
+
+ min
+ max
+
+
+
+
+