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<HTML
><HEAD
><TITLE
>Returning References</TITLE
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>Returning References</A
></H1
><P
> Returning by-refernce it is useful when you want to use function
to find variable which should be bound to. When returning
references, use this syntax:
<DIV
CLASS="informalexample"
><A
NAME="AEN3946"
></A
><P
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="programlisting"
> function &find_var ($param) {
...code...
return $found_var;
}
$foo =& find_var ($bar);
$foo->x = 2;
</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
>
In this example, property of the object returned by the
<TT
CLASS="varname"
>find_var</TT
> function would be set, not of the
copy, as it would be without using reference syntax.
</P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Note: </B
>
Unlike parameter passing, here you have to use
<TT
CLASS="literal"
>&</TT
> in both places - to indicate that you
return by-reference, not a copy as usual, and to indicate than
reference binding and not usual assignment should be done for
<TT
CLASS="varname"
>$foo</TT
>.
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