Удалить все пробелы PHP
$string = preg_replace('/\s+/', '', $string);
LunkLoafGrumble
$string = preg_replace('/\s+/', '', $string);
$str = "\n\n\nHello World!\n\n\n";
echo "With trim: " . trim($str);
//remove all white spaces from a string
$whatonearth=preg_replace('/\s/','',"what o n ear th");