openssl_get_md_methods

(PHP 5 >= 5.3.0, PHP 7)

Gets available digest methods

array openssl_get_md_methods ([ bool $aliases = false ] )

Gets a list of available digest methods.

Parameters:

aliases

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

Returns:

An array of available digest methods.

Examples:

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
)