nginx-luaUsing if..else

server {
  location / {
    content_by_lua_block {
      local a = 2
      if a == 1 then
        ngx.say('first')
      elseif a == 2 then
        ngx.say('second')
      else
        ngx.say('other')
      end
    }
  }
}ctrl + cgithub

`if a == 1 then` check first condition and execute code below	`elseif a == 2 then` if first condition is `false`, check second condition
`end` conditions block should end with `end`	`ngx.say('other')` default code to execute if all conditions are `false`

Usage example

local a = 2
if a == 1 then
  ngx.say('first')
elseif a == 2 then
  ngx.say('second')
else
  ngx.say('other')
end

output

second

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