(PHP 7 >= 7.2.0, PHP 8)
hash_hmac_algos — 返回適用於 hash_hmac 的已註冊雜湊演算法清單
此函式沒有參數。
返回一個以數字索引的陣列，其中包含適用於 hash_hmac() 的支援雜湊演算法清單。
範例 #1 hash_hmac_algos() 範例
<?php
print_r(hash_hmac_algos());以上範例將輸出類似以下的內容
Array
(
[0] => md2
[1] => md4
[2] => md5
[3] => sha1
[4] => sha224
[5] => sha256
[6] => sha384
[7] => sha512/224
[8] => sha512/256
[9] => sha512
[10] => sha3-224
[11] => sha3-256
[12] => sha3-384
[13] => sha3-512
[14] => ripemd128
[15] => ripemd160
[16] => ripemd256
[17] => ripemd320
[18] => whirlpool
[19] => tiger128,3
[20] => tiger160,3
[21] => tiger192,3
[22] => tiger128,4
[23] => tiger160,4
[24] => tiger192,4
[25] => snefru
[26] => snefru256
[27] => gost
[28] => gost-crypto
[29] => haval128,3
[30] => haval160,3
[31] => haval192,3
[32] => haval224,3
[33] => haval256,3
[34] => haval128,4
[35] => haval160,4
[36] => haval192,4
[37] => haval224,4
[38] => haval256,4
[39] => haval128,5
[40] => haval160,5
[41] => haval192,5
[42] => haval224,5
[43] => haval256,5
)
注意:
在 PHP 7.2.0 之前，取得支援雜湊演算法清單的唯一方法是呼叫 hash_algos()，它也會返回不適用於 hash_hmac() 的雜湊演算法。