In a PHP script, I have this statement:

error_log("||here goes an error_log error||");

When I request the script from the web server, the nginx error log
shows the message twice:

2009/03/25 20:49:19 [error] 4380#0: *1 FastCGI sent in stderr: "||here
goes an error_log error||
||here goes an error_log error||" while reading response header from
upstream, client: 127.0.0.1, server: localhost, request: "POST
/script.php HTTP/1.1", upstream: "fastcgi://127.0.0.1:9123", host:
"127.0.0.1"

Does anyone know what's happening here? I'm not sure if the error is
with php-cgi.exe, or with nginx.


My nginx.conf is adapted from http://wiki.nginx.org/PHPFastCGIOnWindows:


worker_processes 1;
error_log logs/error.log notice;
events {
worker_connections 64;
}

http {
include mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;

server {
listen 80;
server_name localhost;

location / {
root ../www;
index index.html index.htm;
autoindex on;
}

error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
location ~ \.php$ {
fastcgi_pass 127.0.0.1:9123;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME c:/www$fastcgi_script_name;
include fastcgi_params;
}

}
}