Add note on avoiding substr() with $offset

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Provided by anonymous 61891 (rasmus@mindplay.dk)

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@342563 c90b9560-bf6c-de11-be94-00142212c4b1

reference/pcre/functions/preg-match.xml

@@ -183,6 +183,12 @@ Array
 )
 ]]>
          </screen>
+         <para>
+          Alternatively, to avoid using <literal>substr()</literal>, use the
+          <literal>\G</literal> rather than <literal>^</literal> anchor, or
+          the <literal>A</literal> modifier instead, both of which work with
+          the <parameter>offset</parameter> parameter.
+         </para>
         </informalexample>
        </para>
       </note>