How to Remove string line breaks, tab special characters-php Tutorial

How does one remove the line feed of a string, special tab characters? How do I remove the line breaks, tab & nbsp; special characters? ------ Solution -------------------- str_replace (n, $ content); str_replace (r, $ content); str_replace (t how to remove the character string line break, special tab characters?
How does one remove the line feed of a string, special tab characters?

------ Solution --------------------
Str_replace ('\ n', '', $ content );
Str_replace ('\ r', '', $ content );
Str_replace ('\ t', '', $ content );
------ Solution --------------------

$ S = 'aabb
Cc ';
Echo preg_replace ('/\ s +/', ', $ s );

Aabbcc