Two-way Encryption

By using this concept, we can encode and decode the data. In simple terms, two-way encryption means there is both encrypt and decrypt function present. In PHP, two-way encryption is accomplished through the following function.

1. base64_encode()
2. base64_decode()

1. base64_encode()

This function is used to encode the given data with base64. This function was introduced in PHP 4.0.

Syntax

Parameters

Returns:

The base64_encode() function returns the encoded data as string.

Example 1

Output:

Example 2

Output:

2. base64_decode():

The base64_decode() function is used to decode a base64 encoded data. This function was introduced in PHP 4.0.

Syntax

Parameters

Returns:

The base64_decode() function returns the decoded data or false on failure. The returned data may be binary.

Example 1

Output:

Example 2

Output: