public function setColumnWidth($columnIndex, $width)
    {
        $this->columnWidths[(int) $columnIndex] = (int) $width;

        return $this;
    }
public function setColumnWidth($columnIndex, $width)
    {
        $this->columnWidths[(int) $columnIndex] = (int) $width;

        return $this;
    }
public function setColumnWidth ( $ columnIndex , $ width ) { $ this -> columnWidths [ ( int ) $ columnIndex ] = ( int ) $ width ; return $ this ; }
Sets the minimum width of a column.

@param int $columnIndex Column index
@param int $width       Minimum column width in characters

@return $this
Sets the minimum width of a column .