LIII. hash Functions
Introduzione
Message Digest (hash) engine. Allows direct or incremental processing of arbitrary length messages using a variety of hashing algorithms.
Requisiti
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 PECL module.
Costanti predefinite
Queste costanti sono definite da questa estensione e sono disponibili solo se l'estensione è stata compilata nel PHP o se è stata caricata dinamicamente a runtime.
- HASH_HMAC (integer)
Optional flag for hash_init(). Indicates that the HMAC digest-keying algorithm should be applied to the current hashing context.
- Sommario
- 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)