PHP 7.1.19 Released

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)
پرچم اختیاری برای hash_init(). نشان می‌دهد که الگوریتم تجزیه کلید HMAC باید به زمینه درهم‌سازی فعلی به کار گرفته شود.
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