PHP base64_encode() Function

The PHP base64_encode() function encodes the given string with MIME (Multipurpose Internet Mail Extensions) 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.

Syntax

base64_encode(string)

Parameters

Return Value

Returns the encoded data, as a string.

Example:

The example below shows the usage of base64_encode() function.

<?php
$str = "AlphaCodingSkills";
$encoded_str = base64_encode($str);

//displaying the encoded string
echo $encoded_str;
?>

The output of the above code will be:

QWxwaGFDb2RpbmdTa2lsbHM=

Example:

Consider one more example which shows how a string is encoded and decoded with MIME base64.

<?php
$str1 = "Programming is fun";
$encoded_str1 = base64_encode($str1);

echo "The string is: $str1 \n";
echo "Encoded string is: $encoded_str1 \n";

$str2 = "UHJvZ3JhbW1pbmcgaXMgZnVu";
$decoded_str2 = base64_decode($str2);

echo "\nThe string is: $str2 \n";
echo "Decoded string is: $decoded_str2 \n";
?>

The output of the above code will be:

The string is: Programming is fun 
Encoded string is: UHJvZ3JhbW1pbmcgaXMgZnVu 

The string is: UHJvZ3JhbW1pbmcgaXMgZnVu 
Decoded string is: Programming is fun