How Can I Remove Non-UTF8 Characters from a String Using PHP?

Remove Non-UTF8 Characters from String

In situations where strings contain non-UTF8 characters, which lead to improper display, there is a need to find an effective approach to remove these characters.

Encoding::toUTF8() Solution

To address this issue effectively, Encoding::toUTF8() is a function specifically designed to handle the conversion of mixed-encoding strings, including Latin1, Windows-1252, and UTF8, into pure UTF8 format. The function automatically detects and rectifies encoding issues, providing a consistent UTF8 output.

Implementation and Usage

To implement Encoding::toUTF8(), simply include the necessary library and namespace:

require_once('Encoding.php');
use \ForceUTF8\Encoding;

You can then convert a mixed-encoding string into pure UTF8 format using:

$utf8_string = Encoding::toUTF8($mixed_string);

Alternatively, there is also Encoding::fixUTF8() for handling strings that have been incorrectly encoded multiple times into UTF8, leading to garbled results. Its usage is similar:

$utf8_string = Encoding::fixUTF8($garbled_utf8_string);

Examples

Consider the following examples:

echo Encoding::fixUTF8("Fédération Camerounaise de Football");
echo Encoding::fixUTF8("Fédération Camerounaise de Football");
echo Encoding::fixUTF8("FÃÂédÃÂération Camerounaise de Football");
echo Encoding::fixUTF8("Fédération Camerounaise de Football");

Output:

Fédération Camerounaise de Football
Fédération Camerounaise de Football
Fédération Camerounaise de Football
Fédération Camerounaise de Football

Additional Information

You can find the Encoding library on GitHub: https://github.com/neitanod/forceutf8

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