ngx_http_core_try_files_phase  534 src/http/ngx_http.c                 ph->checker = ngx_http_core_try_files_phase;
ngx_http_core_try_files_phase  504 src/http/ngx_http_core_module.h ngx_int_t ngx_http_core_try_files_phase(ngx_http_request_t *r,