Update register_shutdown_function documentation

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@319357 c90b9560-bf6c-de11-be94-00142212c4b1

reference/funchand/functions/register-shutdown-function.xml

@@ -10,14 +10,13 @@
   &reftitle.description;
   <methodsynopsis>
    <type>void</type><methodname>register_shutdown_function</methodname>
-   <methodparam><type>callback</type><parameter>function</parameter></methodparam>
+   <methodparam><type>callback</type><parameter>callback</parameter></methodparam>
    <methodparam choice="opt"><type>mixed</type><parameter>parameter</parameter></methodparam>
    <methodparam choice="opt"><type>mixed</type><parameter>...</parameter></methodparam>
   </methodsynopsis>
   <para>
-   Registers the function named by <parameter>function</parameter> to be
-   executed when script processing is complete or when <function>exit</function>
-   is called.
+   Registers a <parameter>callback</parameter> to be executed after script
+   execution finishes or <function>exit</function> is called.
   </para>
   <para>
    Multiple calls to <function>register_shutdown_function</function> can be
@@ -33,22 +32,14 @@
   <para>
    <variablelist>
     <varlistentry>
-     <term><parameter>function</parameter></term>
+     <term><parameter>callback</parameter></term>
      <listitem>
       <para>
-       The shutdown function to register.
+       The shutdown callback to register.
       </para>
       <para>
-       The shutdown functions are called as the part of the request so that 
-       it's possible to send the output from them. There is currently no way
-       to process the data with output buffering functions in the shutdown
-       function.
-      </para>
-      <para>
-       Shutdown functions are called after closing all opened output buffers
-       thus, for example, its output will not be compressed if <link
-       linkend="ini.zlib.output-compression">zlib.output_compression</link> is
-       enabled.
+       The shutdown callbacks are executed as the part of the request, so
+       it's possible to send output from them and access output buffers.
       </para>
      </listitem>
     </varlistentry>
@@ -78,6 +69,14 @@
    &return.void;
   </para>
  </refsect1>
+ 
+ <refsect1 role="errors">
+  &reftitle.errors;
+  <para>
+   If the passed callback is not callable a <constant>E_WARNING</constant>
+   level error will be generated.
+  </para>
+ </refsect1>
 
  <refsect1 role="changelog">
   &reftitle.changelog;
@@ -137,16 +136,6 @@ register_shutdown_function('shutdown');
 
  <refsect1 role="notes">
   &reftitle.notes;
-  <note>
-   <para>
-    Typically undefined functions cause fatal errors in PHP, but when the
-    <parameter>function</parameter> called with
-    <function>register_shutdown_function</function> is undefined, an error
-    of level <constant>E_WARNING</constant> is generated instead.  Also,
-    for reasons internal to PHP, this error will refer to
-    <literal>Unknown</literal> at line #0.
-   </para>
-  </note>
   <note>
    <para>
     Working directory of the script can change inside the shutdown function