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To: Dhiru Pandey <dhiru.pandey@sun.com>
Cc: internals@lists.php.net
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Date: Wed, 30 Apr 2008 20:16:25 +0200
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Subject: Re: Help: call_user_function() core dumps
From: johannes@php.net (Johannes =?ISO-8859-1?Q?Schl=FCter?=)

Hi,

On Wed, 2008-04-30 at 09:52 -0700, Dhiru Pandey wrote:
> I am new to PHP extension writing and embedding. Following the book from
> Sara Goleman - Extending and Embedding PHP (Developer's Library)
> I wrote the following program based on her example in Chap. 20
> 
> ===================================================================
> #include <stdio.h>
> #include <stdlib.h>
> 
> #include <sapi/embed/php_embed.h>
> 
> int main(int argc, char** argv) {
>       PHP_EMBED_START_BLOCK(argc, argv);
> 
>     zval* args[2];
>     zval funcname;
>     zval input_str;
>     zval count;
>     zval retval;
>     char* ans;
>       ZVAL_STRING(&funcname, "str_repeat", 0);
>     args[0] = &input_str;
>     args[1] = &count;

You have to use emalloc'ed memory for (basically) everything you give to
the engine and no pointers to local variables else the engine tries to
free these local variables.

johannes