Ondra Zizka wrote:
Hello,
please look at the code bellow and tell if it does not conform to rules of
returning a reference from a function.
In the first method, I return reference to $sRet variable, and PHP is quiet.
But in the second, PHP says:
Notice: Only variable references should be returned by reference in
C:\web\php_bug_reference_return.php on line 8 // return $ref =&
$this->ReturnReference();
(Note that the notice does not concern the first method as the notice
appears even if I remove references from the first method.)
But I am still just returning a reference to a variable, so I guess it's
actually correct, isn't it?
Thanks for oppinions.
Ondra Zizka
<?php
class A {
function &ReturnReference(){
$sFoo = "Hi.";
return $sRet =& $sFoo;
}
function &RequireReference(){
return $ref =& $this->ReturnReference();
}
}
$oA = new A();
$ref = $oA->RequireReference();
?>
When you define a function as returning a reference (with the & prefix)
you do not need to get the reference yourself, PHP will do it for you.
The following should work fine...
<?php
class A
{
function & ReturnReference()
{
$sFoo = "Hi.";
return $sFoo;
}
function & RequireReference()
{
$retval = $this->ReturnReference();
return $retval;
}
}
$oA = new A();
$ref = $oA->RequireReference();
?>
-Stut
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http://stut.net/
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