hash_update_file
(PHP 5 >= 5.1.2, PECL hash >= 1.1)
hash_update_file — Pump data into an active hashing context from a file
说明
bool hash_update_file ( resource $context , string $filename [, resource $context = NULL ] )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
成功时返回 TRUE， 或者在失败时返回 FALSE.
参见
- hash_init() - Initialize an incremental hashing context
- hash_update() - Pump data into an active hashing context
- hash_update_stream() - Pump data into an active hashing context from an open stream
- hash_final() - Finalize an incremental hash and return resulting digest
- hash() - Generate a hash value (message digest)
- hash_file() - Generate a hash value using the contents of a given file
