public function manipulateVersionString($matches, $position, $increment = 0, $pad = '0')
    {
        for ($i = 4; $i > 0; $i--) {
            if ($i > $position) {
                $matches[$i] = $pad;
            } elseif ($i == $position && $increment) {
                $matches[$i] += $increment;
                // If $matches[$i] was 0, carry the decrement
                if ($matches[$i] < 0) {
                    $matches[$i] = $pad;
                    $position--;
                    // Return null on a carry overflow
                    if ($i == 1) {
                        return;
                    }
                }
            }
        }

        return $matches[1] . '.' . $matches[2] . '.' . $matches[3] . '.' . $matches[4];
    }
public function manipulateVersionString($matches, $position, $increment = 0, $pad = '0')
    {
        for ($i = 4; $i > 0; $i--) {
            if ($i > $position) {
                $matches[$i] = $pad;
            } elseif ($i == $position && $increment) {
                $matches[$i] += $increment;
                // If $matches[$i] was 0, carry the decrement
                if ($matches[$i] < 0) {
                    $matches[$i] = $pad;
                    $position--;
                    // Return null on a carry overflow
                    if ($i == 1) {
                        return;
                    }
                }
            }
        }

        return $matches[1] . '.' . $matches[2] . '.' . $matches[3] . '.' . $matches[4];
    }
public function manipulateVersionString ( $ matches , $ position , $ increment = 0 , $ pad = '0' ) { for ( $ i = 4 ; $ i > 0 ; $ i -- ) { if ( $ i > $ position ) { $ matches [ $ i ] = $ pad ; } elseif ( $ i == $ position && $ increment ) { $ matches [ $ i ] += $ increment ; // If $matches[$i] was 0, carry the decrement if ( $ matches [ $ i ] < 0 ) { $ matches [ $ i ] = $ pad ; $ position -- ; // Return null on a carry overflow if ( $ i == 1 ) { return ; } } } } return $ matches [ 1 ] . '.' . $ matches [ 2 ] . '.' . $ matches [ 3 ] . '.' . $ matches [ 4 ] ; }
Increment, decrement, or simply pad a version number.

Support function for {@link parseConstraint()}

@param  array  $matches   Array with version parts in array indexes 1,2,3,4
@param  int    $position  1,2,3,4 - which segment of the version to decrement
@param  int    $increment Increment
@param  string $pad       The string to pad version parts after $position
@return string The new version
Increment decrement or simply pad a version number .