php - Rewrite Rule not working or rendering page properly -

i making social networking site have many users. such, need simpler, easier way users page. assume logged in freddy, if go freddy's profile page, url say: http://localhost/profile_page.php. if page, want go to, let's say, alice's profile page, can modify url , type http://localhost/profile_page.php/alice rather writing http://localhost/profile_page.php?u=alice.

i have created .htaccess file , have enabled rewrite_module apache modules in wamp. however, page not load appropriately. again, assume logged in freddy, profile page loads perfectly, when edit url go users page, i.e. http://localhost/profile_page.php/alice(who real user, expect go alice's profile page), not render page instructed via css , stays on freddy's profile page.

.htaccess:

rewritebase /www/ rewriteengine on  rewriterule ^([a-za-z0-9_-]+)$ profile.php?u=$1 rewriterule ^([a-za-z0-9_-]+)/$ profile.php?u=$1 

well, rules not considering php file here (check i've added slash before regexp in rules):

rewritebase /www/ rewriteengine on  rewriterule ^/([a-za-z0-9_-]+)$ profile.php?u=$1 rewriterule ^/([a-za-z0-9_-]+)/$ profile.php?u=$1 

with piece of code, http://localhost/profile_page.php?u=alice never matched. ^([a-za-z0-9_-]+)/$ matches letters, numbers , underscore, example question mark cannot matched.

try (assumming instead of profile.php mean profile_page.php

rewritebase /www/ rewriteengine on  rewriterule ^/profile_page.php/([a-za-z0-9_-]+)$ profile_page.php?u=$1 rewriterule ^/profile_page.php/([a-za-z0-9_-]+)/$ profile_page.php?u=$1 

another improvement. can set both expressions in one.

rewritebase /www/ rewriteengine on  rewriterule ^profile_page.php/([a-za-z0-9_-]+)/?$ profile_page.php?u=$1 

i highly recommend remove profile_page.php here in order increase url readability (i see , maybe meant format in specification).

rewritebase /www/ rewriteengine on  rewriterule ^/profile_page.php/([a-za-z0-9_-]+)/?$ profile_page.php?u=$1 rewriterule ^/profile/([a-za-z0-9_-]+)/?$ profile_page.php?u=$1 rewriterule ^/([a-za-z0-9_-]+)/?$ profile_page.php?u=$1 

in case able match these urls * http://localhost.com/alice * http://localhost:com/profile/alice * http://localhost.com/profile_page.php/alice

to able match own profile, sure enable routes that, example:

rewritebase /www/ rewriteengine on  rewriterule ^/?$ profile_page.php rewriterule ^/me?$ profile_page.php rewriterule ^/profile_page.php/([a-za-z0-9_-]+)/?$ profile_page.php?u=$1 rewriterule ^/profile/([a-za-z0-9_-]+)/?$ profile_page.php?u=$1 rewriterule ^/([a-za-z0-9_-]+)/?$ profile_page.php?u=$1 

check order matters here. first matches, first applied. in case i've used same endpoint file. check $_get['u'] isset in order load specified user or 1 in session.

i'd highly recommend use kind of front controller in order able manage routes given 1 single class (app.php example), symfony or modern php framework does.