php - RewriteRule only for specific pattern if 404 error would occur -

i'm trying update .htaccess-file goal, pages have responded "404 file not found"-error rewritten url.

example: i've got 3 links:

404: domain.com/category1/123-article-name.html

working: domain.com/static-page/10-ways-to-destroy-your-webpage.html

untouched: domain.com/simple-website.html

in case first link should redirected domain.com/lost/123-article-name.html, second 1 allready works. third link should never affected rule.

hope guys can me. that's hard nut crack, me! thank you!

edit:

rewriterule ^(.*)/([0-9]+)-(.+).html$ lost/$2-$3.html [l] 

this i've got far, rule kind of "stupid", because not test wheater requested page exists or not.

your rule , rules cms mutually exclusive.

line 41 (your rule) execute if file exists, because if file doesn't exist (rewriteconds on line 38 , 39) server tries return index.php?page=path_name generate 404 error.

if know names of categories/directories missing, per lines 10 35, can apply rule urls have them in it.

rewriterule ^(ausbildung|ausland|berufswelt)/(?=.+-)(.+).html$ lost/$2.html 

original answer

you can test see if file or directory exists adding rewrite condition

rewritecond %{request_filename} !-f # true if request isn't file rewritecond %{request_filename} !-d # true if request isn't directory rewriterule ^.*/([0-9]+)-(.+).html$ lost/$2-$3.html [l]  #not removed first capture group because unnecessary. 

side note: in example, because + greedy in regex, captured groups domain.com/category1/123-article-name.html

• 123-article
• name

which works, might artificially constrain you. change rule include positive ahead:

rewriterule ^.*/(?=.+-)(.+).html$ lost/$1.html 

the (?=.+-) tells regex engine create match number of characters if finds @ least 1 -

you should check out htaccess test, awesome!