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Date: Fri, 26 May 2006 15:45:19 -0500
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Subject: extension can not receive unset values without E_NOTICE or reference
	creation
From: dante@vocalspace.com ("D. Dante Lorenso")

All,

Back on the topic of trying to write a 'filled' function in an 
extension, I have run into trouble.  I have declared a function as follows:

---------- 8< -------------------- 8< ----------
static
        ZEND_BEGIN_ARG_INFO(all_args_prefer_ref, ZEND_SEND_PREFER_REF)
        ZEND_END_ARG_INFO()

zend_function_entry shorthand_functions[] = {
        PHP_FE(filled, all_args_prefer_ref)
        {NULL, NULL, NULL}      /* Must be the last line in 
shorthand_functions[] */
};

PHP_FUNCTION(filled)
{
    RETURN_TRUE;
}
---------- 8< -------------------- 8< ----------

Then, in PHP I try the following test code:

---------- 8< -------------------- 8< ----------
<?php
$x = array();
$x["dog"] = "spot";
$x["cat"] = "moriss";
print_r($x);

// testing
print filled("testing", $x["pig"], $y->testing);
print "\n";

print_r($x);
print_r($y);
?>
---------- 8< -------------------- 8< ----------

Unfortunately, $x now contains a 'pig' key and the non-existent $y has 
been transformed into an object:

---------- 8< -------------------- 8< ----------
Array
(

    [dog] => spot
    [cat] => moriss
)
1
Array
(
    [dog] => spot
    [cat] => moriss
    [pig] => 
)
stdClass Object
(
    [testing] => 
)

---------- 8< -------------------- 8< ----------

Is there a way to define the parameters which an extension's function 
will accept to be optionally set?  The prefer-by-ref I am using is 
making the var exist even when I don't want it to.

Dante