ereg-replace

Use preg_replace() and instead of [ \t\n\r] use \s: $output = preg_replace(‘!\s+!’, ‘ ‘, $input); From Regular Expression Basic Syntax Reference: \d, \w and \s Shorthand character classes matching digits, word characters (letters, digits, and underscores), and whitespace (spaces, tabs, and line breaks). Can be used inside and outside character classes.