Truncate String to Given Length and Add Ellipsis if Necessary using PHP

mbstring extension

1. Enable extension in php.ini file:

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extension=mbstring

2. Truncate a string to given length and add ellipsis if necessary:

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<?php

function truncateString(string $strInput, int $maxLength): string
{
    return mb_strimwidth($strInput, 0, $maxLength, '...');
}

$text = 'Hello world';
echo truncateString($text, 10).PHP_EOL; // Hello w...
echo truncateString($text, 11).PHP_EOL; // Hello world