How to convert url encoding to Chinese characters in php

When making URL requests, we often need to use URL encoding to escape special characters to avoid errors. When we need to convert URL encoding into Chinese characters, PHP provides a variety of functions to complete this task. This article will introduce how to use PHP to convert URL encoding into Chinese characters.

First, we need to understand the basics of URL encoding. URL encoding uses a specific method to represent certain characters, mainly using % plus the hexadecimal representation of the ASCII code value of the corresponding character. For example, the ASCII code value of the letter A is 65, and the corresponding URL encoding is A. In URLs, spaces are usually represented by .

So, how to convert URL encoding into Chinese characters? PHP provides two main functions to accomplish this task, namely urldecode() and rawurldecode().

The urldecode() function decodes the URL encoding into the original string, including Chinese characters. It can handle any type of URL encoding, including decoding of " " symbols. The following is an example:

$url = 'http%3A%2F%2Fwww.example.com%2F%E4%BD%A0%E5%A5%BD%E4%B8%96%E7%95%8C.php';
echo urldecode($url);

The output result is:

http://www.example.com/你好世界.php

Another function is rawurldecode(), which differs from urldecode() in that it does not decode the " " symbol into a space. . Here is an example:

$url = 'http%3A%2F%2Fwww.example.com%2F%E4%BD%A0%E5%A5%BD%E4%B8%96%E7%95%8C.php';
echo rawurldecode($url);

The output is the same as the above example.

It should be noted that when using the urldecode() or rawurldecode() function, you must first use the urlencode() or rawurlencode() function to encode the URL, otherwise encoding errors will occur.

In addition to the above two functions, PHP also provides a more advanced function-mb_convert_encoding(). This function converts a string from one character encoding to another. The following is an example:

$url = 'http%3A%2F%2Fwww.example.com%2F%E4%BD%A0%E5%A5%BD%E4%B8%96%E7%95%8C.php';
echo mb_convert_encoding(urldecode($url), 'UTF-8', 'GBK');

The output result is:

http://www.example.com/你好世界.php

In this example, we use the mb_convert_encoding() function to convert the encoding of the URL from GBK to UTF-8 encoding so that it can be Chinese characters are displayed normally on the web page.

To sum up, how to convert URL encoding to Chinese characters, in PHP we can use functions such as urldecode(), rawurldecode(), mb_convert_encoding(). These functions can help us process URLs more conveniently and efficiently.

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