Method for php to create utf8 encoded file using fopen

This article illustrates how php uses fopen to create an utf8 encoded file. Share it for your reference. The specific implementation method is as follows:

Generally speaking, if we use fopen directly to create files, we will find that the encoding of files is not uft-8, so if we want to create uft8 files, we need to do 1 some technical processing. The specific steps are as follows:

Using PHP to create a file encoded in utf-8 format:

Step 1: Create a new txt file, open it, file- > Save as xxx. php and change the encoding to UTF-8. Save.

Part 2: Add the following code to the php file:

<?php

$filename=rand(100,999).".txt";// Define the file name and file format to be created (change it as needed) 

$str = "PHP Learning network [www.ofstack.com]";// Contents to be written to the new file 

if (!$head=fopen($filename, "w+")) {// Open the file read-write, point the file pointer to the header and cut the file size to zero. If the file does not exist, it will be automatically created 

die(" Try to open a file [".$filename."] Failure ! Please check that you have sufficient permissions ! Creation process terminated !");

}

if (fwrite($head,$str)==false) {// Perform a write to a file 

fclose($head);

die(" Failed to write content ! Please check that you have sufficient permissions ! Write process terminated !");

}

echo " Successfully created UTF-8 Format file [".$filename."] And writes the contents to the file: ".$str;

fclose($head);

?>

Use this method to create the key points of UTF-8 encoded files:

Ensure that the encoding format of the PHP code file itself is UTF-8
② What is the encoding format of the php code file? What is the file encoding created
③ The problem of garbled code is displayed

There are three main factors that control the display of the page:

1. HTML code control: The head tag in the standard HTML web page file contains this code < meta http-equiv="Content-Type" content="text/html; charset=utf-8" / > The sentence charset=utf-8 in the code tells the browser to display the contents of the web page in utf-8 format.

2. PHP code control: If header ("content-Type: text/html; charset=utf-8 "); This code is also intended to tell the browser to display the contents of the web page in utf-8 format. (Note: This code cannot be preceded by output similar to echo.)

3. File physical storage attribute control: open a file with Notepad, file- > Save As, what you see in "Encoding" is the real encoding of the current file

Add an example of fopen

<?php

$f=fopen("test.txt", "wb");

$text=utf8_encode("a!");

 

// First use function utf8_encode Change the data to be written to UTF Encoding format. 

 

$text="\xEF\xBB\xBF".$text;

 

//"\xEF\xBB\xBF", This string of characters is indispensable, and the generated file will become UTF-8 Format, otherwise it will still be ANSI Format. 

 

fputs($f, $text);

 

// Write. 

 

fclose($f);

?>

The file encoding format created in this way is indeed utf-8, but the Chinese characters in the file appear garbled phenomenon. After 1 debugging, the code is as follows:

<?php

$ctxtsubmit=" Good ";

$f=fopen("../".$file, "wb");

    //$text=utf8_encode($ctxtsubmit);

    // First use function utf8_encode Change the data to be written to UTF Encoding format. 

    $text="\xEF\xBB\xBF".$ctxtsubmit;

     //"\xEF\xBB\xBF", This string of characters is indispensable, and the generated file will become UTF-8 Format, otherwise it will still be ANSI Format. 

    fputs($f, $text);

    // Write. 

     fclose($f); 

?>

I hope this article is helpful to everyone's PHP programming.