How to solve the problem of garbled Chinese parameters in url in php

php method to solve the problem of garbled Chinese parameters in the obtained URL: 1. Create a PHP sample file; 2. Obtain the parameters in the URL through "$_GET", the syntax is "$_GET["param "]"; 3. Use "urldecode()" to decode it, and then perform the corresponding operations; 4. Finally, use "urlencode()" to encode the result and return it.

Operating system for this tutorial: Windows 10 system, php8.1.3 version, Dell G3 computer.

PHP can use the "urlencode()" and "urldecode()" functions to solve garbled Chinese parameters

1, urlencode()

The urlencode() function converts a string into a URL-safe format for easy passing in the URL. It replaces all non-alphanumeric characters with a percent sign (%) followed by the encoded value represented by two hexadecimal digits.

For example:

$str = "中文";
$url_encoded = urlencode($str);
echo $url_encoded; // 输出：%E4%B8%AD%E6%96%87

Note: The urlencode() function does not encode characters other than ASCII codes. Therefore, when processing Chinese When waiting for non-ASCII characters, they need to be converted to UTF-8 encoding first.

2. urldecode()

The urldecode() function is used to restore the urlencode() encoded string to the original string.

For example:

$str = "%E4%B8%AD%E6%96%87";
$decoded_str = urldecode($str);
echo $decoded_str; // 输出：中文

Sample code:

// 设置 encoding 为 UTF-8
mb_internal_encoding("UTF-8");
// 获取 URL 参数
$str = $_GET["param"];
// 将参数进行 URL 解码
$str = urldecode($str);
// 进行相应操作
// ...
// 将结果进行 URL 编码
$result = urlencode($result);
// 返回结果
echo $result;

In this example, the URL is first obtained through $_GET parameters, then use urldecode() to decode them, then perform corresponding operations, and finally use urlencode() to encode the results and return them.

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