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PHP Manual :: Predefined Constants



Resource Types || Hash Functions || Hash || PHP Manual

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.


Resource Types || Hash Functions || Hash || PHP Manual
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