echo "<pre>";
print_r(hash_algos());
echo "</pre>";
/*
run:
Array
(
[0] => md2
[1] => md4
[2] => md5
[3] => sha1
[4] => sha224
[5] => sha256
[6] => sha384
[7] => sha512
[8] => ripemd128
[9] => ripemd160
[10] => ripemd256
[11] => ripemd320
[12] => whirlpool
[13] => tiger128,3
[14] => tiger160,3
[15] => tiger192,3
[16] => tiger128,4
[17] => tiger160,4
[18] => tiger192,4
[19] => snefru
[20] => snefru256
[21] => gost
[22] => adler32
[23] => crc32
[24] => crc32b
[25] => fnv132
[26] => fnv164
[27] => joaat
[28] => haval128,3
[29] => haval160,3
[30] => haval192,3
[31] => haval224,3
[32] => haval256,3
[33] => haval128,4
[34] => haval160,4
[35] => haval192,4
[36] => haval224,4
[37] => haval256,4
[38] => haval128,5
[39] => haval160,5
[40] => haval192,5
[41] => haval224,5
[42] => haval256,5
)
*/
