ngx_http_core_try_files_phase  532 http/ngx_http.c                 ph->checker = ngx_http_core_try_files_phase;
ngx_http_core_try_files_phase  455 http/ngx_http_core_module.h ngx_int_t ngx_http_core_try_files_phase(ngx_http_request_t *r,