Thanks to everyone who responded.

Regarding the myriad of choices, isn't Ashley's, listed below, the one most like to guarantee the cleanest output of just letters and numbers?



 --Rick


On Jun 22, 2010, at 11:44 AM, Ashley Sheridan wrote:

On Tue, 2010-06-22 at 11:40 -0400, Rick Dwyer wrote:
Use preg_replace(), which allows you to use a regex to specify what you want to match:

$find = '/[^a-z0-9]/i';
$replace = '_';
$new_string = preg_replace($find, $replace, $old_string);

Thanks,
Ash
http://www.ashleysheridan.co.uk



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