Fix #76104: Generator::next() causes yield to return null

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@344528 c90b9560-bf6c-de11-be94-00142212c4b1

language/generators.xml

@@ -218,8 +218,9 @@ foreach ($generator as $value) {
     </para>
 
     <para>
-     This syntax may be used in conjunction with the
-     <methodname>Generator::send</methodname> method.
+     The value that will be assigned to <varname>$data</varname> is the value
+     passed to <methodname>Generator::send</methodname>, or &null; if 
+     <methodname>Generator::next</methodname> is called instead.
     </para>
    </caution>
 

language/predefined/generator/next.xml

@@ -13,6 +13,10 @@
    <modifier>public</modifier> <type>void</type><methodname>Generator::next</methodname>
    <void />
   </methodsynopsis>
+  <para>
+   Calling <methodname>Generator::next</methodname> is equivalent to calling
+   <methodname>Generator::send</methodname> with &null; as argument.
+  </para>
  </refsect1>
 
  <refsect1 role="parameters">