Gets available digest methods

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- PHP Manual
- OpenSSL Functions
- Gets available digest methods

# openssl_get_md_methods

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

openssl_get_md_methods — Gets available digest methods

### Description

openssl_get_md_methods(bool `$aliases` = `false`): array

Gets a list of available digest methods.

### Parameters

`aliases`

  Set to `true` if digest aliases should be included within the returned array.

### Return Values

An array of available digest methods.

### Examples

Example #1 openssl_get_md_methods() example

Shows how the available digests might look, and also which aliases might be available.

    <?php$digests             = openssl_get_md_methods();$digests_and_aliases = openssl_get_md_methods(true);$digest_aliases      = array_diff($digests_and_aliases, $digests);print_r($digests);print_r($digest_aliases);?>

The above example will output something similar to:

    Array
    (
        [0] => DSA
        [1] => DSA-SHA
        [2] => MD2
        [3] => MD4
        [4] => MD5
        [5] => RIPEMD160
        [6] => SHA
        [7] => SHA1
        [8] => SHA224
        [9] => SHA256
        [10] => SHA384
        [11] => SHA512
        [12] => dsaEncryption
        [13] => dsaWithSHA
        [14] => ecdsa-with-SHA1
        [15] => md2
        [16] => md4
        [17] => md5
        [18] => ripemd160
        [19] => sha
        [20] => sha1
        [21] => sha224
        [22] => sha256
        [23] => sha384
        [24] => sha512
    )
    Array
    (
        [2] => DSA-SHA1
        [3] => DSA-SHA1-old
        [4] => DSS1
        [9] => RSA-MD2
        [10] => RSA-MD4
        [11] => RSA-MD5
        [12] => RSA-RIPEMD160
        [13] => RSA-SHA
        [14] => RSA-SHA1
        [15] => RSA-SHA1-2
        [16] => RSA-SHA224
        [17] => RSA-SHA256
        [18] => RSA-SHA384
        [19] => RSA-SHA512
        [28] => dsaWithSHA1
        [29] => dss1
        [32] => md2WithRSAEncryption
        [34] => md4WithRSAEncryption
        [36] => md5WithRSAEncryption
        [37] => ripemd
        [39] => ripemd160WithRSA
        [40] => rmd160
        [43] => sha1WithRSAEncryption
        [45] => sha224WithRSAEncryption
        [47] => sha256WithRSAEncryption
        [49] => sha384WithRSAEncryption
        [51] => sha512WithRSAEncryption
        [52] => shaWithRSAEncryption
        [53] => ssl2-md5
        [54] => ssl3-md5
        [55] => ssl3-sha1
    )

### See Also

- openssl_digest() - Computes a digest
- openssl_get_cipher_methods() - Gets available cipher methods