What suggestion was given to the user to open the text file with a hex editor to identify potential issues with multibyte character sets?

Opening a text file with a hex editor can help identify potential issues with multibyte character sets. This is because multibyte characters can be represented by multiple bytes, and viewing the file in a hex editor can reveal any unexpected or incorrect byte sequences that may be causing issues with character encoding. 

$file = 'example.txt';

// Read the file contents as binary data
$contents = file_get_contents($file);

// Output the contents in hexadecimal format
echo bin2hex($contents);

Keywords

hex editor text file multibyte character sets identification suggestion

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