What does ctx mean in nginx What does router tx mean What does flash tx mean What does base tx mean

A lot of ctx-related variable names are used in nginx. Without the exact meaning, the mood becomes irritable.
The following is the definition of the ngx_module_s structure.
Consult Brother Qiang: ctx can be understood as the abbreviation of context

    struct ngx_module_s {
        ngx_uint_t ctx_index; //所属分类标识
        ngx_uint_t index; //模块计数器
                                                                //以下预留成员暂未使用
        ngx_uint_t spare0;
        ngx_uint_t spare1;
        ngx_uint_t spare2;
        ngx_uint_t spare3;
        ngx_uint_t version; //模块版本
        void *ctx; //模块上下文
        ngx_command_t *commands; //模块支持的命令集
        ngx_uint_t type; //模块的种类
                                                                        //回调函数
        ngx_int_t (*init_master)(ngx_log_t *log); //主进程初始化时调用*/
        ngx_int_t (*init_module)(ngx_cycle_t *cycle); //模块初始化时调用
        ngx_int_t (*init_process)(ngx_cycle_t *cycle); //工作进程初始化时调用
        ngx_int_t (*init_thread)(ngx_cycle_t *cycle); //线程初始化时调用
        void (*exit_thread)(ngx_cycle_t *cycle); //线程退出时调用
        void (*exit_process)(ngx_cycle_t *cycle); //退出工作进程时调用
        void (*exit_master)(ngx_cycle_t *cycle); //退出主进程时调用
                                                                        //以下预留成员暂未使用
        uintptr_t spare_hook0;
        uintptr_t spare_hook1;
        uintptr_t spare_hook2;
        uintptr_t spare_hook3;
        uintptr_t spare_hook4;
        uintptr_t spare_hook5;
        uintptr_t spare_hook6;
        uintptr_t spare_hook7;
        };

The above introduces what ctx means in nginx, including what tx means, and nginx content. I hope it will be helpful to friends who are interested in PHP tutorials.