How to solve ubuntu php garbled code

Ubuntu php garbled code solution

When using Ubuntu to build a PHP development environment, you may encounter garbled code problems. While this problem isn’t too big of a problem for professional web developers, it can be a very tricky one for beginners. This article will introduce how to solve the PHP garbled problem under Ubuntu.

1. Determine the problem

First of all, you need to determine the garbled code problem. In PHP, garbled characters may appear in many places, such as HTML pages, database storage, file reading and writing, etc. Therefore, the specific garbled problem needs to be determined first.

If it appears in the HTML page, you can add the following meta tag to the page to specify the character set:

<meta charset="utf-8">

If it appears in the database storage, you can specify it in the database connection Character set:

$conn = mysqli_connect('localhost', 'username', 'password', 'db_name');
mysqli_set_charset($conn, 'utf8');

If it appears in the reading and writing of the file, you can specify the character set when opening the file:

$file = fopen('example.txt', 'r');
stream_filter_append($file, "convert.iconv.utf-8/cp936");

2. Determine the character set

After determining the garbled code problem, we must further determine the character set to be used. If everything else is correct but the character set is incorrect, garbled characters will continue to occur. Typically, utf-8 is the most commonly used character set. You can use the following code in PHP code to determine the current character set:

echo ini_get('default_charset');

If the current character set is not utf-8, you can modify the default character set to utf-8 in the php.ini file.

3. Modify the php.ini file

To modify the php.ini file, enter the following command in the terminal:

sudo nano /etc/php/7.2/apache2/php.ini

Here with PHP 7.2 and Apache2 For example, the specific version will be modified according to the actual situation. The file path may also vary depending on the installation method.

Then find the following lines of code, uncomment and modify them to utf-8:

; default_charset = "UTF-8"
default_charset = "utf-8"
; input_encoding = "UTF-8"
; output_encoding = "UTF-8"

Note that if the above code does not exist in the php.ini file, you need to add it manually.

4. Restart Apache

After modifying the php.ini file, you need to restart Apache for the modification to take effect. Enter the following command in the terminal to restart Apache:

sudo service apache2 restart

5. Test

After restarting Apache, you need to test whether the garbled problem is solved. You can write a simple PHP file to test. For example, create a file named index.php with the following content:

    <meta charset="utf-8">
    

Then, access the file in the browser to check whether there is any garbled code problem.

6. Other solutions

If none of the above methods can solve the garbled code problem, you can also try the following methods:

• Modify in the same way MySQL configuration file specifies the default character set as utf-8;
• Use the iconv() function in the code to convert the character set to utf-8;
• When the character set is uncertain Next, use the mb_detect_encoding() function to automatically detect the character set.

Summary

When using Ubuntu to build a PHP development environment, garbled characters are a common problem. Typically, this problem can be solved by specifying the character set and modifying the php.ini file. If none of these methods solve the problem, you need to have a deeper understanding of PHP and related technologies for further debugging and optimization.

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