How to change php file encoding

In the process of writing programs using PHP, sometimes it is necessary to change the encoding of the PHP file from one character set to another. For example, you might use ISO-8859-1 encoding in the original file, but you need to change it to UTF-8 encoding. But before changing the encoding, we need to understand what encoding is and why we need to change it.

What is encoding?

Encoding is the process of converting characters in a character set into binary numbers. Since computers can only handle numbers, encoding is needed to represent and store characters in the computer. In computers, each character has a numerical code to represent it. Encoding usually includes numbers, letters, punctuation marks, and special characters.

Why do you need to change the encoding?

When developing PHP applications, coding problems may cause some adverse effects. It may cause the text to become garbled, affect the page layout, etc. At this point, you need to change the encoding of the PHP file to solve the problem.

How to change the encoding of PHP files:

1. Use a text editor to open the PHP file whose encoding needs to be changed. (Notepad is recommended)

2. Select "File"-> "Save as..." in the menu

3. Keep the file name unchanged and select the required character set, for example UTF-8, GBK, UTF-16, etc.

4. Save the changed file.

Notes:

1. Before changing the encoding of the PHP file, please back up the original file.

2. If the encoding of the PHP file is changed, all characters in the file will be converted to the new encoding format.

3. Changing the encoding may affect other functions of the application, so testing should be performed before changing the encoding.

Conclusion:

Changing the PHP file encoding is an effective way to solve problems such as garbled characters caused by encoding problems, but it needs to be handled with caution. Before changing the encoding, back up the original files and test to make sure the encoding change does not affect other functionality of the application.

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