I'm struggling with the words that have spaces in it. I want spaces to be converted/replaced with '_'.

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Examples:
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Product Page-
Actual Link: /Google Clone PHP/i_3.html
Should be: /Google_Clone_PHP/i_3.html

Category Page-
Actual Link: /CGI & Perl/cat_6.html
Should be: /CGI_&_Perl/cat_6.html

I tried using the php code that I found from one of those webmaster forums:

PHP Code:

$name = str_replace ( ' ', '_', $name ); 


but nothing changed. There was no information about what I'm suppose to do with $name and where the code should be placed in.

Wow been awhile... I was able to figure it out later on.