Below is a list of libraries that support Base64 encoding and decoding in PHP along with sample code for each library.
1. PHP Standard Library (PHP 5.0 and above)
PHP provides the base64_encode
and base64_decode
functions in its standard library.
<?php
$originalString = "test input";
// Encode
$encodedString = base64_encode($originalString);
echo "Encoded: " . $encodedString . "\n";
// Decode
$decodedString = base64_decode($encodedString);
echo "Decoded: " . $decodedString . "\n";
?>
2. OpenSSL Extension
The OpenSSL library in PHP also supports Base64 encoding and decoding through the openssl_encrypt
and openssl_decrypt
functions.
<?php
$originalString = "test input";
// Encode
$encodedString = base64_encode(openssl_encrypt($originalString, 'AES-128-ECB', 'secret', 0, ''));
echo "Encoded: " . $encodedString . "\n";
// Decode
$decodedString = openssl_decrypt(base64_decode($encodedString), 'AES-128-ECB', 'secret', 0, '');
echo "Decoded: " . $decodedString . "\n";
?>
3. Sodium Extension (PHP 7.2 and above)
The Sodium library, starting from PHP 7.2, supports Base64 encoding and decoding.
<?php
$originalString = "test input";
// Encode
$encodedString = sodium_bin2base64($originalString, SODIUM_BASE64_VARIANT_ORIGINAL);
echo "Encoded: " . $encodedString . "\n";
// Decode
$decodedString = sodium_base642bin($encodedString, SODIUM_BASE64_VARIANT_ORIGINAL);
echo "Decoded: " . $decodedString . "\n";
?>
4. Laminas (Zend Framework)
Laminas provides utilities for Base64 encoding and decoding through its cryptographic components.
<?php
require 'vendor/autoload.php';
use Laminas\Crypt\BlockCipher;
use Laminas\Crypt\Symmetric\Mcrypt;
// Encode
$blockCipher = BlockCipher::factory('mcrypt', ['algo' => 'aes']);
$blockCipher->setKey('encryptionkey');
$originalString = "test input";
$encrypted = $blockCipher->encrypt($originalString);
$encodedString = base64_encode($encrypted);
echo "Encoded: " . $encodedString . "\n";
// Decode
$decodedString = $blockCipher->decrypt(base64_decode($encodedString));
echo "Decoded: " . $decodedString . "\n";
?>
Add the dependency to composer.json
:
{
"require": {
"laminas/laminas-crypt": "^3.4"
}
}
5. Firebase JWT Library
The Firebase JWT Library supports Base64 encoding and decoding through the encoding and decoding of JWT tokens.
<?php
require 'vendor/autoload.php';
use Firebase\JWT\JWT;
$originalString = "test input";
$key = "example_key";
// Encode
$encodedString = JWT::encode($originalString, $key);
echo "Encoded: " . $encodedString . "\n";
// Decode
$decodedString = JWT::decode($encodedString, $key, array('HS256'));
echo "Decoded: " . json_encode($decodedString) . "\n";
?>
Add the dependency to composer.json
:
{
"require": {
"firebase/php-jwt": "^6.0"
}
}
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