Re: advise needed on a mysql select library function

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I'm leaning towards this;

function bp_select($db_name,$sql,&$result)
{


	bp_conn($db_name,$db_server,$db_username,$db_pass);
        //with that, I pass the $db_name and the rest gets byRef'ed by
the bp_conn! and I keep the bp_conn in a sep. file

	$link = mysql_connect($db_server, $db_username, $db_pass) or
die(mysql_error());
	mysql_select_db($db_name, $link) or die(mysql_error());
	$result = mysql_query($sql,$link) or die(mysql_error());
	mysql_close($link);

}


On Fri, Jan 13, 2012 at 11:18 AM, Haluk Karamete
<halukkaramete@xxxxxxxxx> wrote:
> Why discover the wheel, where there are so many qualified pros are
> here that pick up their brains...
>
> I'm building a php library of functions, I mean day to day functions
> that eases my RAD.
>
> Since I am new to PHP, I'm trying to wrap php's built-in-functions and
> funtionalities into new function names of my own creation from my old
> ASP library so that I can work within the new php environment - using
> still the familiar function names and arguments ... for example, i had
> a leftof function which worked as
>
> leftof("abcef","bc") //returns "ef"
>        //which is the "leftof" the "bc" in the haystack "abcdef".
>
> That's the idea... I have over 100 functions that does all kinds of
> things... the goal is to write those functions' php equaivalents. I'm
> done with the string and utility functions, now I m getting into db
> stuff!
>
> My goal now is to write a one-liner sqlselect functionality which will
> work like this
>
> <?php
>
> _select("my_wordpress_database_name_here","SELECT * FROM wp_posts",$result);
>
> //so that I can instantly get into business as follows;
>
> while ($row = mysql_fetch_assoc($result)) {
>        echo "<li>" . $row['post_title'];
> }
>
> basically, what the _select is supposed to do is to take the passed
> database name, look that up in a switch statement to get the sql
> server, db uid & pwd info and run the whole show all the way until it
> puts the results in the $result resource. And I'm already done with
> that...  I posted the code below...  but I want to isolate the switch
> statement ( that contains the sqlserver,uid,pwd data ) out from this
> library file...  I do not want to keep them in the library. ideally,
> that info should be kept in say, connection_info.php file...
>
> how would you go about it?
>
> write an include directive ( for the switch section only) and
> implement it that way? or is there a better way - such as using a
> function for the switch?
> please fell free to not only answer this question but also improve the
> code segment I posted below. I will be using the principles I gain
> from this thread in writing the update,delete and insert versions...
>
> this is where I am now and following code snippet works as intended...
>
>
>
> _select( "wordpress_XYZ" , "SELECT * FROM wp_posts" , $result );
>
> while ( $row = mysql_fetch_assoc($result)) {
>        echo "<li>" . $row['post_title'];
> }
>
> function _select($db_name,$sql,&$result)
> {
>
>
>
>
>        switch (bp_lcase($db_name))
>        {
>
>                case  "wordpress_XYZ";
>
>                        $db_name = ""; // this is usually the same as the 1st argument
> passed by the user
>                        $db_server = "";
>                        $db_username = "";
>                        $db_pass = "";
>                        break;
>
>                case " ":
>
>                        echo "Unknown database.";
>                        die;
>
>                break;
>
>                default:
>
>                        echo "Database name not passed";
>                        die;
>                        break;
>
>        }
>
>        $link = mysql_connect($db_server, $db_username, $db_pass) or
> die(mysql_error());
>        mysql_select_db($db_name, $link) or die(mysql_error());
>        $result = mysql_query($sql,$link) or die(mysql_error());
>        mysql_close($link);
>
>
>
>
> }
>
> in the above code, ideally I would want to store the switch stuff
> somewhere else... the question is what's the most elegant/proper way
> of doing this...
>
> now... that switch could be included as is from a plain file, that's
> easy enough...
>
> or it could be put into a function so that _select function internally
> calls it and get the handle of the "$link" so that
> mysql_select_db($db_name, $link) can run fine...  in that case, should
> the $link be passed &$ by ref? any issues with that?
>
> which approach is better? or are there other issues that I must be
> aware of in starting building such a library?

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