sodium_hex2bin

    (PHP 7 >= 7.2.0, PHP 8)

    sodium_hex2bin — Decodes a hexadecimally encoded binary string

    Descripción

    sodium_hex2bin(#[\SensitiveParameter] string $string, string $ignore = ""): string

    Decodes a hexadecimally encoded binary string.

    Like sodium_bin2hex(), sodium_hex2bin() is resistant to side-channel attacks while hex2bin() is not.

    Parámetros

    string

    Hexadecimal representation of data.

    ignore

    Optional string argument for characters to ignore.

    Valores devueltos

    Returns the binary representation of the given string data.

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    User Contributed Notes 1 note

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    o-ren-shi at o2 dot pl
    1 day ago
    For some very, very weird reason, if you pass an invalid argument to this function:

    <?php $cfg['blowfish_secret'] = sodium_hex2bin('f16ce59f45714194371b48dZGBmq4sRDUFy99glKIlKjlxaB76luP64d6fb13851'); ?>

    then you'll get "Fatal error: Uncaught Error: Call to undefined function sodium_hex2bin()" error instead of any error that would tell you that your argument is invalid.

    I still keep wondering why this isn't intercepted internally and how can PHP find one of its internal functions undefined only due to the wrong argument developer calls them with.
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