# Mhash

&reftitle.intro;

These functions are intended to work with mhash. Mhash can be used to create checksums, message digests, message authentication codes, and more.

This is an interface to the mhash library. Mhash supports a wide variety of hash algorithms such as MD5, SHA1, GOST, and many others. For a complete list of supported hashes, refer to the constants page. The general rule is that you can access the hash algorithm from PHP with `MHASH_hashname`. For example, to access TIGER you use the PHP constant `MHASH_TIGER`.

This extension is obsoleted by Hash.

As of PHP 7.0.0 the Mhash extension has been fully integrated into the Hash extension. Therefore, it is no longer possible to detect Mhash support with `extension_loaded`; use `function_exists` instead. Furthermore, Mhash is no longer reported by `get_loaded_extensions` and related features.

&reference.mhash.setup; &reference.mhash.constants; &reference.mhash.examples; &reference.mhash.reference;