PHP function to detect file encoding - PHP tips

In PHP development, sometimes we need to determine the encoding type of a file in order to correctly process the contents. This article will introduce a custom PHP function for detecting the encoding type of a file. This function can help us quickly and accurately obtain the encoding information of the file.

First, we need to be clear that file encoding refers to the numerical encoding system used to represent text characters. Common file encoding types include UTF-8, GBK, ISO-8859-1, etc. Different encoding types use different sequences of bytes to represent characters, so it's important to understand a file's encoding type when working with its contents.

Here is sample code for a PHP function that detects file encoding:

function detectFileEncoding($filePath)
{
   
    
    
    $handle = fopen($filePath, 'r'