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PHP: Predefined Constants - Manual

Hash Functions

Resource Types

Last updated: Fri, 27 Jun 2008

Predefined Constants

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 hash_init(). Indicates that the HMAC digest-keying algorithm should be applied to the current hashing context.