function to strip all non-alphanumeric characters?

[dadamssg]

does anyone know how to write a function that will strip all non-alphanumeric characters? Im tryin to create a "Tweet This!" link that will take them to twitter with something already written in their status update box. I thought i could just use urlencode() but it doesn't work for things like (")'s and ('s. Not sure what the deal is. heres what im talking about..if you have a twitter account

 

http://www.twitter.com/home?status=See+what+I+mean!+"qoutes+doesn't+work+though"+

[dadamssg]

correction...i need to replace all non-alphanumeric characters with spaces. If anybody is up for the challenge

[Adam]

$str = preg_replace('/[^a-z0-9]/i', ' ', $str);

[roopurt18]

You probably want to preg_replace twice.  The first time as MrAdam suggested and the second time to remove consecutive spaces created by the first regexp.

 

$str = preg_replace( '/[ ]+/', ' ', preg_replace('/[^a-z0-9]/i', ' ', $str) );

[.josh]

Or just do it in a single regex..

$str = preg_replace('/[^a-z0-9\s]+/i', ' ', $str);

[roopurt18]

Doh!