(PHP 5 >= 5.1.2, PECL hash >= 1.1)
hash_algos — Return a list of registered hashing algorithms
Returns a numerically indexed array containing the list of supported hashing algorithms.
Example #1 hash_algos() example
As of PHP 5.1.2, hash_algos() will return the following list of algorithm names.
<?php
print_r(hash_algos());
?>
以上例程会输出：
Array
(
[0] => md4
[1] => md5
[2] => sha1
[3] => sha256
[4] => sha384
[5] => sha512
[6] => ripemd128
[7] => ripemd160
[8] => whirlpool
[9] => tiger128,3
[10] => tiger160,3
[11] => tiger192,3
[12] => tiger128,4
[13] => tiger160,4
[14] => tiger192,4
[15] => snefru
[16] => gost
[17] => adler32
[18] => crc32
[19] => crc32b
[20] => haval128,3
[21] => haval160,3
[22] => haval192,3
[23] => haval224,3
[24] => haval256,3
[25] => haval128,4
[26] => haval160,4
[27] => haval192,4
[28] => haval224,4
[29] => haval256,4
[30] => haval128,5
[31] => haval160,5
[32] => haval192,5
[33] => haval224,5
[34] => haval256,5
)