in the function table, you need to force those parameters to be passed
by reference.
PHP_FE(ncurses_getyx, first_and_second__args_force_ref)
For an example of this, take a look at the headers_sent function entry
in ext/standard/basic_functions.c
--Wez.
On Wed, 4 Jun 2003, Hans Zaunere wrote:
>
> Hello,
>
> Please forgive me if this question is redundant, but I've searched high and
> low to no avail.
>
> As a PHP extension, I'm writing a ZEND_FUNCTION(myfunc) that needs to accept
> two variables from PHP land, fill in two values (longs) and then return TRUE
> or FALSE. Briefly:
>
>
> ZEND_FUNCTION(ncurses_getyx)
> {
> zval *z_y,*z_x;
>
> if( ZEND_NUM_ARGS() != 2 )
> WRONG_PARAM_COUNT;
>
> if( zend_parse_parameters(2 TSRMLS_CC, "zz",&z_y,&z_x) == FAILURE )
> RETURN_FALSE;
>
> ZVAL_LONG(z_y,123);
> ZVAL_LONG(z_x,321);
>
> RETURN_TRUE;
> }
>
>
> So, simple enough, this works, called, for example, like so from PHP:
>
> $myy = 0;
> $myx = 0;
> ncurses_getyx($myy,$myx);
>
> However, when I don't initialize $myy and $myx to 0 in PHP, I get "Notice -
> Undefined variable: " errors. While I understand why it would happen, I'd
> like my function to act, for instance, like exec(). exec() will accept
> arguments to fill in, and even if they've never been initialized anywhere, no
> such notice will be thrown. getmxrr() acts in a similar way.
>
> I've looked at the code for both of these functions:
>
> http://lxr.php.net/source/php4/ext/standard/exec.c#192
> http://lxr.php.net/source/php4/ext/standard/dns.c#708
>
> but cannot see anything significant that would incur such different behavior
> from that of my function. I've played around with zval_dtor(), which is used
> in exec(), but still without any luck. Any help is appreciated.
>
> Hans
>
>
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>
>
>
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