hash Functions

Einführung

Message Digest (hash) engine. Allows direct or incremental processing of arbitrary length messages using a variety of hashing algorithms.

Anforderungen

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.

Resource Typen

This extension defines a Hashing Context resource returned by hash_init().

Vordefinierte Konstanten

Folgende Konstanten werden von dieser Erweiterung definiert und stehen nur zur Verfügung, wenn die Erweiterung entweder statisch in PHP kompiliert oder dynamisch zur Laufzeit geladen wurde.

HASH_HMAC (integer): Optional flag for hash_init(). Indicates that the HMAC digest-keying algorithm should be applied to the current hashing context.

Inhaltsverzeichnis

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)