[SOLVED] strip certain characters

[gevans]

Hey guys,

 

I'm part way through building a cms. The cms can make pages that are redirected using .htaccess file

 

All the URL are as follows http://www.mydomain.com/an_added_page

 

htaccess takes an_added_page and loads=> index.php?p=an_added_page

 

The filename is made from the page title, so An Added Page gets converted to an_added_page and stored.

 

I want the users to be able to write anything in the page title, but store a version of it with [a-z0-9_] what's the best way to do this??

 

<?php
//Example
$title= "This's the page title!";

//Desired string = "this_s_the_page_title"

if(!ereg("^[a-zA-Z0-9_]+$", $title)){
//string isn't fine, need to strip out anything that isn't a-z, 0-9 or and udnerscore
} else {
//string's fine
$title = str_to_lower($title);
}
?>

 

Hope all that makes sense......

[gevans]

Think I've got it sorted myself...

 

$title = "This's my page!! content, here..";
$title = ereg_replace("[^A-Za-z0-9 ]", "", $title);
$title = strtolower(str_replace(" ", "_", $title));
echo $title; //prints    thiss_my_page_content_here