hash_update_file

Pump data into an active hashing context from a file ()
bool hash_update_file ( resource context, string filename [, resource context] )

参数

context

Hashing context returned by hash_init().

filename

URL describing location of file to be hashed; Supports fopen wrappers.

context

Stream context as returned by stream_context_create().

返回值

如果成功则返回 TRUE,失败则返回 FALSE