Sodium Functions
PHP Manual

sodium_base642bin

Decodes a base64-encoded string into raw binary.

Description

string sodium_base642bin(#[\SensitiveParameter]string $string, int $id, string $ignore = "")

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.

Parameters

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).

Return Values

Decoded string.