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regular expression to remove control characters but keep newline

Posted on 2006-11-16
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Last Modified: 2013-12-12
Hi All,

I have the following regex to remove control characters, but in some case i want to keep the newline character.

$input = preg_replace('!\p{C}!u', '', $input);

Does anyone know how to modify this  to allow for the newlines in the string?

Thanks for the help!

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Question by:amagondes
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Roonaan earned 250 total points
ID: 17971760
I think there is no such way using the unicode replacement. An alternative might be to first split a string on \n then preg_replace it parts and then reconstruct the string.

Also, to quote the manual:
Matching characters by Unicode property is not fast, because PCRE has to search a structure that contains data for over fifteen thousand characters. That is why the traditional escape sequences such as \d and \w do not use Unicode properties in PCRE.

-r-
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