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Date: Wed, 5 Dec 2012 16:47:45 -0500
Message-ID: <CAArmra1OQU5erVe3PCXdN0xQR+pCFn37MEJoRpCsKDCHA3skyA@mail.gmail.com>
To: Amir <admin@ecdcconference.org>
Cc: internals@lists.php.net
Content-Type: multipart/alternative; boundary=bcaec5016079cedcff04d021ee1f
Subject: Re: [PHP-DEV] a simple question about PHP extension: using user
 function in my own extension
From: wfitch@meetme.com (Will Fitch)

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On Wed, Dec 5, 2012 at 6:18 AM, Amir <admin@ecdcconference.org> wrote:

> Hi
> I am trying to build an PHP extension for my personal project.
> For some reason. I want to build some part of my project with extension.
> So, I can make a connection via my extension as you can see below my c++
> source code.
>
> Cause of poor document, I confused with zend engine source code and c++ and
> relations with php.
> I just have a simple question, how can I use mysql funtions work with query
> and process it like:
> mysql_query
> mysql_fetch_assoc
> and ...
>
>
Are you specifically referring to using mysql functions, or are you
referring to executing user space functions?  It looks like you're
specifically referring to MySQL functions, and in that case, you should
look at ext/mysqlnd or libmysql.  Executing user space functions in this
manner is not a good route to take.

In the PHP source directory, look at ext/mysqlnd/mysqlnd.h.  This will
provide you with a C-level API.


>
> here is my code:
>
> PHP_FUNCTION(ig_connect_to_
> database)
> {
>     zval fname, *args[3], dbLink;
>     zval selectDB, *args_selectDB[1], retval;
>
>     /*if(zend_call_method(NULL, NULL,
>                                                     NULL,
>                                                     "mysql_connect",
>
> strlen("mysql_connect"),
>                                                     &retval,
>                                                     1,
>                                                     args[1],
>                                                     args[2] TSRMLS_CC
>                                                                         )
> == FAILURE) {
>     php_printf("gosh!");
> }
> else {
>     php_printf("yep!");
> }*/
>
>
>     ZVAL_STRING(&fname, "mysql_connect", 0);
>
>     MAKE_STD_ZVAL(args[0]);
>     ZVAL_STRING(args[0], "localhost", 1);
>
>     MAKE_STD_ZVAL(args[1]);
>     ZVAL_STRING(args[1], "root", 1);
>
>     MAKE_STD_ZVAL(args[2]);
>     ZVAL_STRING(args[2], "", 1);
>
>
>     if (call_user_function(EG(function_table), NULL, &fname, &dbLink, 3,
> args TSRMLS_CC) == FAILURE) {
>
>         RETURN_STRING("fail to connect to database", 1);
>     }
>     else
>     {
>         zval_ptr_dtor(&args[2]);
>         zval_ptr_dtor(&args[1]);
>         zval_ptr_dtor(&args[0]);
>
>         /*
>         *return_value = dbLink;
>         zval_copy_ctor(return_value);
>         */
>
>         /****now! I want to select a database on success****/
>
>         ZVAL_STRING(&selectDB, "mysql_select_db", 0);
>
>         MAKE_STD_ZVAL(args_selectDB[0]);
>         ZVAL_STRING(args_selectDB[0], "clickbartarirg", 1);
>
>         if (call_user_function(CG(function_table), NULL, &selectDB,
> &retval, 1, args_selectDB TSRMLS_CC) == SUCCESS)
>         {
>             /* I successfully selected database */
>             ZEND_FETCH_RESOURCE_NO_RETURN(retval);
>             if(&retval)
>             {
>                 php_printf("selected");
>             }
>             else
>             {
>                 zend_error(E_ERROR, "failed to select database!");
>             }
>
>             zval_ptr_dtor(&args_selectDB[0]);
>
>         }
>         else
>         {
>             zend_error(E_ERROR, "database problem");
>             zval_ptr_dtor(&args_selectDB[0]);
>         }
>     }
>
> }
>
> Thanks.
>
> Regards
> *Amir Ghazavi*
> *Web Developer
> IT Manager of ECDC2013*
> *
> *
> *www.ecdcconference.org*
>

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