hash_update_file Pump data into an active hashing context from a file php函数


hash_update_file

(PHP 5 >= 5.1.2, PECL hash >= 1.1)

hash_update_filePump 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



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