Remove spaces when echoing the_title
This little trick can be useful for calling custom functions and printing the title with out spaces for W3C compatibility. I used this trick in a new theme called Galleria, which will be out for public download in the coming days.
Using this comes in handy for a delicious text link:
<?php $title = get_the_title(); ?>
<a href="http://del.icio.us/post?url=<?php echo $title; ?>&<?php echo str_replace(" ", "%20", $title); ?>">
Bookmark This (<?php echo $title; ?>)</a>
What I am doing is calling $title = get_the_title(); and using str_replace(" ", "%20", $title); to replace empty spaces with a %20, which is used in URL encoding empty spaces.
Alternatively you can use a dash or underscore.
Thanks to Jason Boyle for his adaption.

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May 16, 2009
12:10 am
If you’re just trying to make the string into a valid URL candidate, urlencode() might be a better choice- that way you don’t have to worry about other characters in your title (colons, commas, punctuation, etc).
Peter´s last blog post..How to Hide Certain Custom Fields From the Edit Post Page
May 16, 2009
7:58 am
There is as “urlencode()” php function for this purpose. http://php.net/manual/en/function.urlencode.php
May 16, 2009
8:31 am
Thanks for that!
August 16, 2009
11:58 pm
Brilliant stuff, thanks!