Remove empty lines and multiple spaces
This is how you can remove empty lines and multiple spaces from a string.
<?php
public function removeEmptiness($text) {
$text = preg_replace('/\s\s+/', ' ', $text);
return preg_replace("/(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+/", "\n", $text);
}
?>