Definition and Usage
定义和用法

The quoted_printable_decode() function decodes a quoted-printable string to an 8-bit ASCII string.
quoted_printable_decode()函数的作用是：转换quoted-printable字符串为8位字符串。

Syntax
语法

quoted_printable_decode(string)

Tips and Notes
提示

Tip: Data encoded in quoted-printable are unlikely to be modified by mail transport. A text which is entirely US-ASCII may be encoded in quoted-printable to ensure the integrity of the data should the message pass through a character-translating, or line-wrapping gateway.
提示：以“引用-输出[quoted-printable]”方式解码的数据与通过“邮件传送器[mail transport]”修改的数据是不同的。一个完整的US-ASCII文本以“引用-输出[quoted-printable]”方式进行解码以确保数据的完整性。这个解码方式将通过“字符传送器[character-translating]”传递信息（或者是通过“line-wrapping网关”）。

Example
案例

<?php
$str = "Hello=0Aworld.";
echo quoted_printable_decode($str);
?>

The output of the code above will be:
上述代码将输出下面的结果：

Hello world.

The HTML source of the code above will be:
上述代码显示的HTML源代码如下：

Hello
world.

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