<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title>Base64和URI编码解码混合使用</title>
</head>
<body>
<script type="text/javascript">
//只能对英文进行Base64编码解码，汉字运行不显示
var str = "1369";
var encodedData = window.btoa(str); //编码
var decodedData = window.atob(encodedData); //解码
document.writeln("JS：原来的字符串："+str+"<br>");
document.writeln("Base64编码的字符串："+encodedData+"<br>");
document.writeln("Base64解码的字符串："+decodedData+"<br><br>");
//encodeURIComponent() decodeURIComponent()
var encodeURIComponentData = encodeURIComponent(encodedData); //编码
var decodeURIComponentData = window.atob(decodeURIComponent(encodeURIComponentData)); //解码
document.writeln("encodeURIComponent()的字符串："+encodeURIComponentData+"<br>");
document.writeln("decodeURIComponent()的字符串："+decodeURIComponentData+"<br><br>");
</script>
<?php
//只能对英文进行Base64编码解码，汉字不进行编码
$str = '1369';
$encodedData = base64_encode($str);
$decodedData = base64_decode($encodedData);
echo 'PHP：原来字符串：'.$str.'<br>';
echo 'Base64编码的字符串：'.$encodedData.'<br>';
echo 'Base64解码的字符串：'.$decodedData.'<br><br>';
//urlencode() urldecode()
$urlencodeData = urlencode($encodedData);//编码
$urldecodeData = base64_decode(urldecode($urlencodeData));//解码
echo "urlencode的字符串：$urlencodeData<br>";
echo "urldecode的字符串：$urldecodeData";
?>
<!--
以上，是JS Base64 和 PHP Base64对应
URI编码解码 的对应
-->
</body>
</html>
效果图：