What are some potential pitfalls when truncating strings in PHP and how can they be avoided?

One potential pitfall when truncating strings in PHP is not taking into account multi-byte characters, which can result in corrupted text. To avoid this issue, you can use the `mb_substr()` function instead of `substr()` to ensure proper handling of multi-byte characters. 

// Truncate a string with proper handling of multi-byte characters
function truncateString($string, $length) {
    if (mb_strlen($string) > $length) {
        return mb_substr($string, 0, $length) . '...';
    }
    return $string;
}

// Example usage
$string = "Hello, 世界";
$truncatedString = truncateString($string, 5);
echo $truncatedString; // Output: Hello...

Keywords

strlen substr mb_strlen mb_substr encoding

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