Replace Multiple Spaces and Newlines with only one space in PHP

Question

I have a string with multiple newlines.

The String:

This is         a dummy text.               I need              




to                                       


        

Answer 1

I would encourage you to use preg_replace:

# string(45) "This is a dummy text . I need to format this."
$str = preg_replace( "/\s+/", " ", $str );

Demo: http://codepad.org/no6zs3oo

You may have noted in the " . " portion of the first example. Spaces that are immediately followed by punctuation should probably be removed entirely. A quick modification permits this:

$patterns = array("/\s+/", "/\s([?.!])/");
$replacer = array(" ","$1");

# string(44) "This is a dummy text. I need to format this."
$str = preg_replace( $patterns, $replacer, $str );

Demo: http://codepad.org/ZTX0CAGD