Nginx Rewrite Short URL server in Subfolder URL's only - php

Question

Nginx/Php aficionado's
I have a Yourls install running on Nginx which i've got working fine using the following .conf file. The redirects work, the database is copied over from an apache install and all is fine.
However on the old server I had another simple shortURL service running in a sub directory. It has lots of short URL's created with the style of url.com/p/0aexvibr
They all run in the subdirectory called "p" and all the links look like that, they are plain files with nothing but a URL on the top line.
What I need is for Nginx to redirect urls such as url.com/p/0aexvibr and ignore anything to main the URL that is being redirected by the Yourls rewrite rule below. Take them to a php script in /p/ which then opens and redirects the user the URL in the file linked (in this case 0aexvibr contains the url http://google.com) could someone help set this up?
Current conf
server {
listen 80;
server_name url.com;
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
root /var/www/html/url;
charset utf-8;
}
location / {
try_files $uri $uri/ /yourls-loader.php;
index index.php;
include /etc/nginx/conf.d/php-fpm;
}
include /etc/nginx/drop;
}
Here is the contents of the show.php
<?php
if($_GET['id']){
$id = addslashes($_GET['id']);
if(file_exists("urls/$id"))
{
$url = file_get_contents("urls/$id");
header("location:".$url);
} else {
echo "Error : invalid hash";
}
} else {
echo "Error : no hash";
}
?>

Answer 1

I don't know how that conf file was working for you , when it comes for the YOURLS redirecting. Anyway, here is my suggestion for your question:
server {
listen 80;
server_name url.com;
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
charset utf-8;
##the next two locations for the old service which calls the show.php
location ~ ^/p/(.+\.php)$ {
alias /var/www/html/url/$1;
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $request_filename;
include fastcgi_params;
}
location /p {
alias /var/www/html/url/;
try_files $uri $uri/ /p/show.php;
}
##the next two locations for the yourls configuration, expecting it to be in the root directory
location ~ ^/(.+\.php)$ {
alias /var/www/html/url/$1;
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $request_filename;
include fastcgi_params;
}
location / {
alias /var/www/html/url/;
index index.php;
try_files $uri $uri/ yourls-loader.php;
}
}