php weird encoding behavior using strtolower('Fötus');

user_5661749 0
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there seems to be some weird encoding issue when I run:

echo strtolower('Fötus');

I get f�tus

Why is ö even touched? (It is already lowercase)

character-encoding php
1 Answers

You need to use mb_strtolower() function as like below

echo mb_strtolower('Fötus');
// Output is fötus
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