Nginx中IF、AND、OR语句用法实例

location = /test/ {
default_type text/html;
set $b 0;
if ( $remote_addr != '' && $http_x_forwarded_for != '' ){
set $b '1';
}
echo $b;
}
[root@test-vm ~]# /usr/local/nginx/sbin/nginx -t

nginx: [emerg] invalid condition "$remote_addr" in /usr/local/nginx/conf/nginx.conf:60
configuration file /usr/local/nginx/conf/nginx.conf test failed

location = /test_and/ {
default_type text/html;
set $a 0;
set $b 0;
if ( $remote_addr != '' ){
set $a 1;
}
if ( $http_x_forwarded_for != '' ){
set $a 1$a;
}
if ( $a = 11 ){
set $b 1;
}
echo $b;
}
location = /test_or/ {
default_type text/html;
set $a 0;
set $b 0;
if ( $remote_addr != '' ){
set $a 1;
}
if ( $http_x_forwarded_for != '' ){
set $a 1;
}
if ( $a = 1 ){
set $b 1;
}
echo $b;
}