Base64 Decoding Code Snippets

<?php
$encoded = "SGVsbG8gV29ybGQh";
$decoded = base64_decode($encoded);
echo $decoded; // Output: Hello World!
?>

import base64

encoded = "SGVsbG8gV29ybGQh"
decoded_bytes = base64.b64decode(encoded)
decoded_str = decoded_bytes.decode('utf-8')
print(decoded_str) # Output: Hello World!

// Browser JS
const decoded = atob("SGVsbG8gV29ybGQh");
console.log(decoded);

// Node.js
const str = Buffer.from("SGVsbG8gV29ybGQh", 'base64').toString('utf-8');

import java.util.Base64;

String encoded = "SGVsbG8gV29ybGQh";
byte[] decodedBytes = Base64.getDecoder().decode(encoded);
String decoded = new String(decodedBytes);
System.out.println(decoded);

import java.util.Base64

val encoded = "SGVsbG8gV29ybGQh"
val decodedBytes = Base64.getDecoder().decode(encoded)
val decoded = String(decodedBytes, Charsets.UTF_8)
println(decoded)

// Android:
// val decodedBytes = android.util.Base64.decode(encoded, android.util.Base64.DEFAULT)

using System;
using System.Text;

string encoded = "SGVsbG8gV29ybGQh";
byte[] data = Convert.FromBase64String(encoded);
string decoded = Encoding.UTF8.GetString(data);
Console.WriteLine(decoded);

Dim encoded As String = "SGVsbG8gV29ybGQh"
Dim data As Byte() = Convert.FromBase64String(encoded)
Dim decoded As String = System.Text.Encoding.UTF8.GetString(data)
Console.WriteLine(decoded)

package main
import (
	"encoding/base64"
	"fmt"
)
func main() {
	encoded := "SGVsbG8gV29ybGQh"
	decoded, _ := base64.StdEncoding.DecodeString(encoded)
	fmt.Println(string(decoded))
}

use base64::{Engine as _, engine::general_purpose};

fn main() {
    let encoded = "SGVsbG8gV29ybGQh";
    let bytes = general_purpose::STANDARD.decode(encoded).unwrap();
    let decoded = String::from_utf8(bytes).unwrap();
    println!("{}", decoded);
}

require 'base64'

encoded = "SGVsbG8gV29ybGQh"
decoded = Base64.decode64(encoded)
puts decoded

use MIME::Base64;

my $encoded = "SGVsbG8gV29ybGQh";
my $decoded = decode_base64($encoded);
print $decoded;

# Command Line Terminal
echo "SGVsbG8gV29ybGQh" | base64 --decode
# Or reading from file:
base64 -d input.b64 > output.txt

-- MySQL 5.6+ Query
SELECT FROM_BASE64('SGVsbG8gV29ybGQh'); -- Returns 'Hello World!'

-- PostgreSQL Query
SELECT convert_from(decode('SGVsbG8gV29ybGQh', 'base64'), 'UTF8');

require(["dojox/encoding/base64"], function(base64){
  var byteArray = base64.decode("SGVsbG8gV29ybGQh");
});