PHP saves the txt file with the BOM header added and removes the BOM header from the txt file when reading

Recently, a user reported that the uploaded txt file was opened directly with a browser. Some browsers display it normally Garbled code 。 then Tianxing Studio After looking at it, it is determined that there is Chinese in the txt file and the encoding format is incorrect. The simplest solution is to save the txt file on the computer and select "UTF-8 BOM", as shown in the following figure:

This article is to share another method of using php to handle txt coding.

First, use the php save tape Bom head Of Txt file , the code is as follows:

 $str='Here are some Chinese'; //String $str = chr(0xEF).chr(0xBB).chr(0xBF).$ str; //Plus bom head $txt_path = '1.txt'; //File Save Path $fp = fopen($txt_path, "w"); fwrite($fp,$str); fclose($fp);

Then, when PHP reads the txt text file, it needs to remove the BOM header.

First write a function to process the BOM header:

 //This function comes from: https://www.feiniaomy.com/post/582.html function del_bom($contents){     $charset[1] = substr($contents, 0, 1);     $charset[2] = substr($contents, 1, 1);     $charset[3] = substr($contents, 2, 1);     if (ord($charset[1]) == 239 && ord($charset[2]) == 187 && ord($charset[3]) == 191) {         $rest = substr($contents, 3);         return $rest;     }else{         return $contents;     } }

Then read txt, remove the BOM header, and then read:

 $txt_path = '1.txt'; //Txt file path $upload_txt = file_get_contents($txt_path); $upload_txt = del_bom($upload_txt); echo $upload_txt;

The above is a detailed tutorial of using PHP to process the BOM header of txt text files.