What potential issues can arise when performing a search with Umlaut characters in PHP?

When performing a search with Umlaut characters in PHP, potential issues can arise due to character encoding. To solve this, you can use the `mb_strtolower` function in PHP to convert the search string to lowercase and handle Umlaut characters properly. 

$searchTerm = "Möller";
$normalizedSearchTerm = mb_strtolower($searchTerm, 'UTF-8');

// Perform search using $normalizedSearchTerm

Keywords

Umlaut characters PHP search Encoding UTF-8 Error handling

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