What are some potential pitfalls to be aware of when sorting data with umlauts in PHP?

When sorting data with umlauts in PHP, a potential pitfall to be aware of is that the default string comparison functions may not handle umlauts correctly, leading to incorrect sorting results. To solve this issue, you can use the `collator` class in PHP, which provides locale-sensitive string comparison. 

$collator = new Collator('de_DE');
$array = ['ä', 'ö', 'ü'];
$collator->sort($array);
print_r($array);

Keywords

PHP sorting data umlauts character encoding

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