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Re: Taking parameters into functions [message #175658 is a reply to message #175657]

Sun, 16 October 2011 13:27

Jerry Stuckle
Messages: 2598
Registered: September 2010

Karma:

Senior Member

On 10/16/2011 8:56 AM, houghi wrote:
> I have the following code:
>
> $File = "test.txt";
> function write_fifo($data,$File) {
> echo $data."<br>".$File."<hr>";
> $fh = fopen($File, 'w') or exit("can't open file -".$File."= .");
> fwrite($fh, $data);
> fclose($fh);
> }
> write_fifo("Something Here",$File);
>
> This works. What I want to ask is about the write_fifo() part. Is it
> possible to have something like the following:
> write_fifo("Something Here");
> instead of the line including $File.
>
> Not a real must. Just a nice to have. It would make my code perhaps a
> bit cleaner AND I would have learned something that I could use in the
> future.
>
> I have looked, but could not find anything. Probably because I have no
> idea what I should be looking for (php novice and all that)
>
> houghi

You could, by making $File global in your function. But it's a very bad
thing to do. It now makes the function dependent on a variable outside
of it. You couldn't, for instance, use the function with a variable
named $outfile.

Parameters are good things to pass to functions, and you should strive
to use them as much as necessary, not get rid of the for "cleaner code".
Your code will end up much "dirtier" in the long run.

--
==================
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Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
==================

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[Message index]

		Taking parameters into functions By: houghi on Sun, 16 October 2011 12:56
		Re: Taking parameters into functions By: Jerry Stuckle on Sun, 16 October 2011 13:27
		Re: Taking parameters into functions By: houghi on Sun, 16 October 2011 14:16
		Re: Taking parameters into functions By: Jerry Stuckle on Sun, 16 October 2011 18:32
		Re: Taking parameters into functions By: Peter H. Coffin on Sun, 16 October 2011 16:57
		Re: Taking parameters into functions By: houghi on Sun, 16 October 2011 18:15
		Re: Taking parameters into functions By: alvaro.NOSPAMTHANX on Mon, 17 October 2011 08:10

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