array_map() maps values, not indexes

Cf. <https://news-web.php.net/php.doc/969388082>.

Author: cmb69

reference/array/functions/array-map.xml

@@ -17,7 +17,7 @@
   <para>
    <function>array_map</function> returns an &array; containing
    the results of applying the <parameter>callback</parameter>
-   to the corresponding index of <parameter>array</parameter>
+   to the corresponding value of <parameter>array</parameter>
    (and <parameter>arrays</parameter> if more arrays are provided)
    used as arguments for the callback.
    The number of parameters that the <parameter>callback</parameter>
@@ -71,7 +71,7 @@
   &reftitle.returnvalues;
   <para>
    Returns an array containing the results of applying the <parameter>callback</parameter>
-   function to the corresponding index of <parameter>array</parameter>
+   function to the corresponding value of <parameter>array</parameter>
    (and <parameter>arrays</parameter> if more arrays are provided)
    used as arguments for the callback.
   </para>