Example of base64 encryption and decryption function in php (with code)

The example of this article describes the base64_decode and base64_encode encryption and decryption functions in PHP. Share it with everyone for your reference. The specific analysis is as follows:

These two functions are used in php to encrypt and decrypt php code. base64_encode is for encryption, and base64_decode is for decryption.

Let’s look at two simple examples below.

base64_encode syntax: (recommended learning: php tutorial)

string base64_decode (string data);

$str = 'd3d3LnBocC5jbiBwaHDkuK3mlofnvZE='; //定义字符串 
echo base64_decode($str); //输

base64_encode syntax:

string base64_encode(string data);

$str='m.sbmmt.com php中文网'; //定义字符串 
echo base64_encode($str);  // 输出编码后的内容为： d3d3LnBocC5jbiBwaHDkuK3mlofnvZE=

base64_encode

(PHP 4, PHP 5, PHP 7)

base64_encode — Encode data using MIME base64

Description

string base64_encode (string $data)

Use base64 to encode data.

This encoding is designed to enable binary data to be transmitted over non-pure 8-bit transport layers, such as the body of an email.

Base64-encoded data takes up about 33% more space than the original data.

Parameters

data The data to be encoded.

Return value

The encoded string data, or FALSE on failure.

Example

Example #1 base64_encode() Example

<?php
    $str = &#39;This is an encoded string&#39;;
    echo base64_encode($str);
?>

The above routine will output:

VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw==

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