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How to Prevent Multilingual Garbled Text Caused by fgetss? Practical Solutions

gitbox 2025-08-27 
<span><span><span class="hljs-meta"><?php</span></span><span>  
</span><span><span class="hljs-comment">// This part is unrelated to the article content, it can be used for general configuration or comments</span></span><span>  
</span><span><span class="hljs-comment">// For example: defining constants, loading configuration files, etc.</span></span><span>  
</span><span><span class="hljs-title function_ invoke__">define</span></span><span>(</span><span><span class="hljs-string">&#039;APP_NAME&#039;</span></span><span>, </span><span><span class="hljs-string">&#039;Multilingual Processing Tool&#039;</span></span><span>);  
</span><span><span class="hljs-meta">?></span></span><span>  
<p><hr></p>
<p><h1>How to Prevent Multilingual Garbled Text Caused by fgetss? Practical Solutions</h1></p>
<p><p>In PHP, <code></span>fgetss<span>()

Here, the third parameter of mb_convert_encoding is the original file encoding. The first and second parameters are the target encoding and the input string, respectively.

3. Set the Page Encoding

Make sure the output HTML page has the correct encoding declaration, for example:

&lt;meta charset="UTF-8"&gt;

This ensures the browser correctly interprets the content encoding and prevents garbled text.

4. Use PHP Built-in Functions to Detect Encoding

You can use mb_detect_encoding() to automatically detect encoding, avoiding hardcoding:

&lt;?php  
$line = fgetss($handle, 4096);  
$encoding = mb_detect_encoding($line, ['UTF-8', 'GBK', 'BIG5'], true);  
if ($encoding !== 'UTF-8') {  
    $line = mb_convert_encoding($line, 'UTF-8', $encoding);  
}  
echo $line;  
?&gt;

5. Avoid Using fgetss() When Possible

If the purpose is purely to filter HTML tags, consider using fgets() with strip_tags(), which gives more flexibility in handling encoding:

&lt;?php  
$handle = fopen('multilang.txt', 'r');  
if ($handle) {  
    while (($line = fgets($handle)) !== false) {  
        $line = strip_tags($line);  
        // Handle encoding conversion as above  
        echo $line;  
    }  
    fclose($handle);  
}  
?&gt;

3. Summary

  • File and page encoding should remain consistent. It is recommended to use UTF-8 universally.
  • Use mb_convert_encoding() after reading to ensure characters display properly.
  • Avoid relying directly on fgetss()’s encoding assumptions. Combining fgets() with strip_tags() improves compatibility.
  • The page must declare the correct encoding for the browser to parse it properly.

By following these methods, developers can effectively avoid multilingual garbled text caused by fgetss(), ensuring stability and readability when handling multilingual text in applications.

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