How to implement jump page with Chinese parameters in PHP

In web development, PHP is one of the most widely used and influential server-side scripting languages. It enables powerful database interaction and dynamic page generation, and has extremely high flexibility and compatibility. However, for beginners, PHP may encounter some problems when processing Chinese parameters, especially when jumping pages. This article will introduce how to use PHP to jump to pages with Chinese parameters.

1. Problem background

In some cases, we need to jump between pages, such as carrying certain parameters for processing after the page jumps. However, in PHP, page jumps with Chinese parameters may be garbled. This is because the HTTP protocol uses ASCII code for character transmission by default, and the Chinese character set is included in the Unicode character set, and the character sets do not match. Will cause garbled Chinese characters.

2. Solution

To solve the problem of jumping with Chinese parameters, it mainly focuses on URL encoding and decoding. URL encoding is a method of escaping non-ASCII characters in URLs. It can convert Chinese characters into forms such as "you" instead of the default garbled characters.

1. URL encoding

In PHP, we can use the urlencode function to URL encode Chinese characters. For example, encoding the string "Hello" into a URL format:

$str = "你好";
$url = urlencode($str);
echo $url;

The output result is:

%E4%BD%A0%E5%A5%BD

As you can see, the urlencode function replaces the spaces between the Chinese characters "Hello" is " ", and the Chinese characters "you" and "好" are encoded as "you" and "好" respectively.

2. URL decoding

When jumping to a page, you need to decode the URL-encoded parameters and restore them to original Chinese characters. In this case, you can use the urldecode function.

For example, decode the URL just encoded:

$url = '%E4%BD%A0%E5%A5%BD';
$str = urldecode($url);
echo $str;

The output result is:

你好

As you can see, the urldecode function restores the encoded "you" to Chinese character "you".

3. Example

Based on the above two functions, we can implement jumps with Chinese parameters. For example, jump to the page and carry the parameters "name" and "age":

<a href="test.php?name=<?php echo urlencode(&#39;张三&#39;);?>&age=<?php echo urlencode(&#39;18&#39;);?>">跳转到test页面</a>

Receive and decode the parameters in the test.php page:

$name = urldecode($_GET['name']);
$age = urldecode($_GET['age']);
echo "姓名为：" . $name . "，年龄为：" . $age;

4. Notes

You need to pay attention to the following points when using the urlencode and urldecode functions:

• Since the urlencode function only URL-encodes Chinese and some special characters, it is recommended to use the htmlspecialchars function in actual applications to encode all Parameters are encoded to avoid security vulnerabilities.
• Avoid using Chinese characters as file names or file paths, because some operating systems do not support file names or paths with Chinese characters.
• When making multiple jumps, URL encoding and decoding need to be performed multiple times, otherwise parameter transfer errors may occur.

3. Summary

This article introduces how to use PHP to jump to the page with Chinese parameters. It should be noted that when passing Chinese parameters, URL encoding and decoding are required to avoid problems such as garbled characters. In practical applications, you also need to pay attention to security issues and naming conventions for file names and paths. I hope this article will be helpful to developers who are learning PHP.

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