openssl_digest

    (PHP 5 >= 5.3.0, PHP 7, PHP 8)

    openssl_digest — Computes a digest

    Description

    openssl_digest(string $data, string $digest_algo, bool $binary = false): string|false

    Computes a digest hash value for the given data using a given method, and returns a raw or binhex encoded string.

    Parameters

    data

    The data.

    digest_algo

    The digest method to use, e.g. "sha256", see openssl_get_md_methods() for a list of available digest methods.

    binary

    Setting to true will return as raw output data, otherwise the return value is binhex encoded.

    Return Values

    Returns the digested hash value on success or false on failure.

    Errors/Exceptions

    Emits an E_WARNING level error if an unknown signature algorithm is passed via the digest_algo parameter.

    See Also

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    User Contributed Notes 1 note

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    mwgamera at gmail dot com
    11 years ago
    The second argument should be one of the values returned by openssl_get_md_methods() rather than hash_algos(). ‘Hash’ and ‘OpenSSL’ are independent extensions and support different selection of digest algorithms. Notably, Hash supports some non-cryptographic hashes like adler or crc.
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