PHP Base64_decode 函数
Sarwan Soomro
2023年1月30日
2022年5月13日
PHP base64_decode 函数将字符串转换为长纯文本，然后与用户定义值集的主函数一起发送。
base64_decode() 是 php 的内置函数，最常用于网络上的邮件功能。
函数语法：
string base64_decode( $string, $strict)
它需要两个参数。
$string- 用于存储编码数据，是必须的。$strict- 虽然此参数不像前者那样是强制性的，但当它设置为TRUE,时，base64_decode 将返回FALSE，前提是它的输入包含函数字母表以外的数据。否则，无效数据将被自动丢弃。
返回值：
base64 解码函数在失败的情况下返回 FALSE，并可能返回二进制值。
PHP Base64_decode 函数示例代码 1
<?php
$string = base64_encode ('Your string values are encoded');
echo "1.Here is the encoded function value in a machine readable format = ".$string ."<br>";
echo "2.The function decodes the formerly encoded string value" ."<br>" .base64_decode($string);
?>
输出：
1.Here is the encoded function value in a machine readable
format = WW91ciBzdHJpbmcgdmFsdWVzIGFyZSBlbmNvZGVk
2. The function decodes the formerly encoded string value
Your string values are encoded.
示例代码显示了 base64_decode() 函数如何在一个简单的场景中工作。
为了对编码数据进行解码，程序为变量赋值，然后与解码函数一起使用。
而输出表明 base64_decode() 如何将数据转换回用户可读格式。
PHP Base64_decode 函数示例代码 2
<?php
//The following variable is assigned with a string set
$string = "HELLO--こんにちは--你好";
//string contains bilingual text
//base64 is used to encode the data first into the $enco variable
$enco = base64_encode ($string);
//finally the base64_decode functionis used to decode the encoded value
$deco = base64_decode ($enco);
echo $deco;
?>
输出：
HELLO--こんにちは--你好
Author: Sarwan Soomro
Sarwan Soomro is a freelance software engineer and an expert technical writer who loves writing and coding. He has 5 years of web development and 3 years of professional writing experience, and an MSs in computer science. In addition, he has numerous professional qualifications in the cloud, database, desktop, and online technologies. And has developed multi-technology programming guides for beginners and published many tech articles.
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