W3cubDocs

/PHP

hash_update_file

(PHP 5 >= 5.1.2, PHP 7, PHP 8, PECL hash >= 1.1)

hash_update_file — Pump data into an active hashing context from a file

Description

hash_update_file(HashContext $context, string $filename, ?resource $stream_context = null): bool

Parameters

context

Hashing context returned by hash_init().

filename

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

stream_context

Stream context as returned by stream_context_create().

Return Values

Returns true on success or false on failure.

Changelog

Version Description
8.0.0 stream_context is now nullable.
7.2.0 Accept HashContext instead of resource.

See Also

  • 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_file() - Generate a hash value using the contents of a given file

© 1997–2025 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.hash-update-file.php