@ and %

[Anon]

I have seen these 2 symbold around and i am really wondering what they do. My assumption is that they cut down the code (substitute for a lot of other junk), but I am probably wrong. Could someone tell me?

Thanx a bunch

[joshk]

I do believe the % symbol is the mod operator and the @ symbol will supress some errors.

Ray Kolbe wrote:

I have seen these 2 symbold around and i am really wondering what they do. My assumption is that they cut down the code (substitute for a lot of other junk), but I am probably wrong. Could someone tell me?

Thanx a bunch

[lyonhaert]

@ suppresses php warnings and such. for example, if you try...

include("filename.ext");

and the include fails for whatever reason, you'll get an error. however, with...

@include("filename.ext");

if the include fails it won't say a thing about it.

when prefixed on any function (like $ prefixes on all variables), it suppresses error messages.

% is the modulus operator. simple example:
7 % 3 would return the remainder of 7 / 3, 1.

this is useful in laying out tables of items through code more simply than using a tricky set of two nested for loops. which i had done once before just to figure out how to do tricky for loop combinations like that.

let's say you have a scalar array of 14 items ( $my_array) that you want displayed in a table with 3 columns. so, each time a third cell has been made, you have to end the row and begin a new one. i've cut short the html, but you should be able to get it.

[table]
 [tr]

for ($i = 0; $i < count($my_array); $i++) {

&nbsp;$limit = $i % 3;

&nbsp;if (($i > 0) AND ($limit == 0)) {
&nbsp;&nbsp;print "[/tr][tr]";
&nbsp;}

&nbsp;print "[td]".$my_array[$i]."[/td]"

}

[/tr]
[/table]

or something like that. hope that helped.