How to Replace Umlauts with ASCII Equivalents in UTF-8 Strings?

Converting Umlauts to ASCII Equivalents in UTF-8 Strings

Problem:

Replace special characters, such as umlauts, in a UTF-8 string with their closest 7-bit ASCII equivalent. For instance, "lärm" should become "larm" and "andré" should become "andre."

Solution:

Using utf8_decode() and strtr(), as demonstrated in the given code snippet, is a common solution. However, if your source file is saved in UTF-8 and you cannot input ISO-8859-15 characters, a more elegant approach is available.

The iconv() function can be used to perform character set conversion. By specifying "ascii//TRANSLIT" as the target character set, umlauts will be automatically converted to their ASCII equivalents:

echo iconv("utf-8","ascii//TRANSLIT",$input);

Extended Example:

To illustrate the use of iconv(), consider the following code:

$input = "lärm andré";
$output = iconv("utf-8","ascii//TRANSLIT",$input);

echo $output; // Output: larm andre

This code converts all umlauts in the input string to their ASCII equivalents.

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