Nginx中if语句的判断条件与多条件判断详解

set $my_ip ''; 
if ( $remote_addr = 222.222.222.222){set $my_ip 1;} #注意这里的$remote_addr如何用了负载均衡的话,这里应该是$http_x_forwarded_for
if ( $remote_addr = 192.168.1.170 ){ set $my_ip 1;}
if ( $remote_addr = 192.168.1.169 ){ set $my_ip 1;}
if ( $my_ip != 1) {rewrite ^/design/(.*)\.php$ /tingfu.html?$1&;} #将*.php转到tingfu.html

set $test '';
if ( $request_uri ~* /img/test.php ) {
 set $test P;
}


if ( $http_x_forwarded_for !~* ^222\.222\.222\.222.* ) {
 set $test "${test}C";
}


if ( $test = PC ) { #当条件符合 访问test.php并且 ip不是222.222.222.222的 转发到55555.php
rewrite ^(.*)$ /img/55555.php permanent; 
}

set $do_yaf 0; 
if ( $chic_ver = 3 ) { 
 set $do_yaf 1;
}
if (!-e $request_filename) { 
 set $do_yaf "${do_yaf}1"; 
}
if ( $do_yaf = "11" ) { 
 rewrite ^/(.*)$ /index.php/$1 last;
}
location / { 
 include /etc/nginx/conf.d/fastcgi_params;
 if ( $chic_ver = 2 ) {
 proxy_pass http://192.168.172.247:2332;
 break;
 }
 if ( $chic_ver = 3 ) {
 fastcgi_pass unix:/var/php-nginx/14774481332305.sock/socket;
 }
}