Decodes a hexadecimally encoded binary string

# sodium_hex2bin

(PHP 7 >= 7.2.0, PHP 8)

sodium_hex2bin — Decodes a hexadecimally encoded binary string

### Description

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.

### Parameters

`string`
  Hexadecimal representation of data.
`ignore`
  Optional string argument for characters to ignore.

### Return Values

Returns the binary representation of the given `string` data.

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