[Nginx] 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;
  }