base64
$base64
Validates that a string is properly formatted Base64 encoded data. Checks for valid Base64 character set (A-Z, a-z, 0-9, +, /) and proper padding with equals signs. If padding is present, the total length must be a multiple of 4.
Validates that a string is properly formatted Base64 encoded data. Checks for valid Base64 character set (A-Z, a-z, 0-9, +, /) and proper padding with equals signs. If padding is present, the total length must be a multiple of 4.