FRIHOST • FORUMS • FAQ • TOS • BLOGS • DIRECTORY
You are invited to Log in or Register a Frihost Account!

How to use tags for search

   Frihost Forum Index -> Scripting -> Php and MySQL
 


imagefree
I am working on an Image Gallery System, where a person while uploading an image specifies the related tags like wallpaper, picture, beautiful, natural, mountain etc separated by comma.

Now what i want is a script that separates all such words (may be using explode()), and make them links. For this i need validation too, that no other character than SPACE, COMMA, A-Z, a-z is entered.
Can someone please help me in developing such script!!!!

I already searched on Google, but failed to find the help or a readymade one.

Thanks WAITING for responses.
LukeakaDanish
If you know php it shouldnt be too hard.

Yes, explode would be great for this task. Presumably users entering numbers or symbols is fine - as long as it doesn't interfeer with your HTML or database.

Any, from php.net, here is an example of explode:

Code:
$pizza  = "piece1 piece2 piece3 piece4 piece5 piece6";
$pieces = explode(" ", $pizza);
echo $pieces[0]; // piece1
echo $pieces[1]; // piece2


So obviously the first parameter would, in your case, be ", " instead of " ".

Then just add the relevant html to the ends of each string in the array (using a loop ofcourse!) and echo it out.

Good luck.
rvec
Quote:
For this i need validation too, that no other character than SPACE, COMMA, A-Z, a-z is entered.

If those are entered should the script output a warning or replace the characters with something (could even be '')?
Anyhow preg_replace would be the way to go.

Code:
<?php
$string = 'sdfg,rth,sdf,wertgs,sdf,rthrthsw,34tqgfas4,adsfg,á.43,w4b';
$array = explode(',',$string);
$pattern = '/([^a-zA-Z ]*)/';

foreach($array as $item){
   $new_item=preg_replace($pattern, '', $item);
   $new_array[] = '<a href="search.php?q='.$new_item.'">'.$new_item.'</a>';
}
?>


That would explode $string, then replace all characters other then A-Za-z and space(not comma cause those are already gone with the explode) by '' (nothing) and put it all in an array called $new_array
Reply to topic    Frihost Forum Index -> Scripting -> Php and MySQL

FRIHOST HOME | FAQ | TOS | ABOUT US | CONTACT US | SITE MAP
© 2005-2007 Frihost, forums powered by phpBB.