Note: This manual is provided for your convenience only - this is not the official source and may not be 100% up to date.
LIV. hash Functions
Message Digest (hash) engine. Allows direct or incremental processing
of arbitrary length messages using a variety of hashing algorithms.
The Hash extension requires no external libraries and is enabled by
default as of PHP 5.1.2. It may be explicitly disabled by using the
--disable-hash switch to configure. Earlier versions of PHP may
incorporate the Hash extension by installing the
This extension defines a Hashing Context resource returned by
The constants below are defined by this extension, and
will only be available when the extension has either
been compiled into PHP or dynamically loaded at runtime.
( HASH_HMAC ) integer
Optional flag for
Indicates that the HMAC digest-keying algorithm should be
applied to the current hashing context.
hash_init() Table of Contents hash_algos -- Return a list of registered hashing algorithms hash_file -- Generate a hash value using the contents of a given file hash_final -- Finalize an incremental hash and return resulting digest hash_hmac_file -- Generate a keyed hash value using the HMAC method and the contents of a given file hash_hmac -- Generate a keyed hash value using the HMAC method hash_init -- Initialize an incremental hashing context hash_update_file -- Pump data into an active hashing context from a file hash_update_stream -- Pump data into an active hashing context from an open stream hash_update -- Pump data into an active hashing context hash -- Generate a hash value (message digest)