How to remove non-alphanumeric characters without losing accentuation?

Question

I am able to remove the non-alphanumeric ones as follows preg_replace('/[^a-z0-9\s]/i', null, $string );

However, in this way I am losing the accentuation of words, someone has some answer?

Answer 1

I’m not sure what you’re trying to filter but looking for digits and letters should work well:

[^\p{L}\p{N}\s] means anything that is not:

• \p{L} - letters

• \p{N} - digits

• \s - blank space

You can use it like this:

$string = 'Olá amanhã é dia! #20%';
$limpa = preg_replace('/[^\p{L}\p{N}\s]/', '', $string );
echo $limpa;

The result is:

Olá amanhã é dia 20