Re: Extensions: parameters as references

[Yasir Malik <ymalik@xxxxxxxxxxxxxx>]

Is there any list (or forum) that can help me with this?

Thanks,
Yasir

On Fri, 17 Jun 2005, Yasir Malik wrote:

> Date: Fri, 17 Jun 2005 11:51:24 -0400 (EDT)
> From: Yasir Malik <ymalik@xxxxxxxxxxxxxx>
> To: php-general@xxxxxxxxxxxxx
> Subject:  Extensions: parameters as references
>
> I am creating a PHP extension.  In my function, I want the parameter to be a 
> reference.  The extension function works fine only if the variable passed is 
> initialized.  For example, here is the extension function:
> ZEND_FUNCTION(first_module)
> {
>   zval *parameter;
>
>   if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC,
>                             "z", &parameter) == FAILURE)
>       return;
>
>   ZVAL_LONG(parameter, 78);
> }
>
> When I call this as
> <?php
> dl("test.so");
> $a = 4;
> first_module($a);
> print "$a\n";
> ?>
>
> it works fine, but when I call it as:
> <?php
> dl("test.so");
> first_module($a);
> print "$a\n";
> ?>
>
> nothing is outputted.  I looked at the source code for various extensions, 
> and I noticed that they called the deconstructor zval_dtor().  I tried this, 
> but it still did not work:
> ZEND_FUNCTION(first_module)
> {
>   zval *parameter;
>
>   if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC,
>                             "z", &parameter) == FAILURE)
>       return;
>
>   zval_dtor(parameter);
>   ZVAL_LONG(parameter, 78);
> }
>
> Thanks,
> Yasir
>
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