Solving nginx location configuration problems

Question

(1)

 if ($fastcgi_script_name ~ "^(.+\.php)(/.+)$"){
    set $path_info ;
 }

(2)

  if ($fastcgi_script_name ~ "^index.php/(.+)$"){
    set $path_info ;
 }

Access address test.com/index.php/oss/index

(1) $2 = /oss/index
(2) $1 does not have any data

(1)(2) I feel the same, but the writing method is different. Why are the results different? ? ? Waiting online

Answer 1

Is there a slash missing before index