A whole package is just one file with a single function \Alexsoft\Leftpad\leftpad(string $string, int $length, string $filler): string
$string - your initial string
$length - final length of returned string
$filler - symbol with which initial string should be left padded
composer require alexsoft/leftpad\Alexsoft\Leftpad\leftpad('foo', 5) // => " foo"
\Alexsoft\Leftpad\leftpad('1', 3, '0') // => "001"