Encodes data with MIME base64

# base64_encode

(PHP 4, PHP 5, PHP 7, PHP 8)

base64_encode — Encodes data with MIME base64

### Description

base64_encode(string `$string`): string

Encodes the given `string` with base64.

This encoding is designed to make binary data survive transport through transport layers that are not 8-bit clean, such as mail bodies.

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

### Parameters

`string`

  The data to encode.

### Return Values

The encoded data, as a string.

### Examples

Example #1 base64_encode() example

`<?php
$str = 'This is an encoded string';
echo base64_encode($str);
?>`

The above example will output:

    VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw==

### See Also

- base64_decode() - Decodes data encoded with MIME base64
- chunk_split() - Split a string into smaller chunks
- convert_uuencode() - Uuencode a string
- » RFC 2045 section 6.8

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