Make SEO Friendly URL From PHP get form method

RewriteEngine On

RewriteRule ^([^/\.]+)/([^/\.]+)?$ category.php?type$1&tools_category=$2

Where 

category.php is your category page  name 

tools_category is the name of fetch data from input box

original url - http://localhost/tools2/category/category.php?tools_category=domain

after url - http://localhost/tools2/category/domain