sodium_base642bin

(PHP 7 >= 7.2.0, PHP 8)

sodium_base642bin — Decodes a base64-encoded string into raw binary.

说明

sodium_base642bin ( string $string , int $id , string $ignore = "" ) : string

Converts a base64 encoded string into raw binary. Unlike base64_decode(), sodium_base642bin() is constant-time (a property that is important for any code that touches cryptographic inputs, such as plaintexts or keys) and supports multiple character sets.

参数

string

string; Encoded string.

id

  • SODIUM_BASE64_VARIANT_ORIGINAL for standard (A-Za-z0-9/\+) Base64 encoding.
  • SODIUM_BASE64_VARIANT_ORIGINAL_NO_PADDING for standard (A-Za-z0-9/\+) Base64 encoding, without = padding characters.
  • SODIUM_BASE64_VARIANT_URLSAFE for URL-safe (A-Za-z0-9\-_) Base64 encoding.
  • SODIUM_BASE64_VARIANT_URLSAFE_NO_PADDING for URL-safe (A-Za-z0-9\-_) Base64 encoding, without = padding characters.

ignore

Characters to ignore when decoding (e.g. whitespace characters).

返回值

Decoded string.

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