FPDF中的换行符不起作用

Question

我使用FPDF动态生成。我按照教程http://fpdf.org/en/script/script20.php进行了操作。我想给我的表标题提供换行符，以便我能以正确的方式对齐数据。我尝试使用<br />标记，但它不起作用。它只显示标签。

这是我的代码：

$cols=array( "Item Code"    => 15,
             "Product Name <br />UOM"  => 15,
             "Description"     => 30,
             "Price"      => 15,
             "Qty" => 10,
             "Disc%"          => 10,
             "Sub-Total"          => 15,
             "NLSP<br /> Rate"          => 15,
             "Amt"          => 15,
             "LSLD Rate"          => 15,
             "SAmt"          => 15,
             "MSLS Rate"          => 15,
             "IAmt"          => 15,
             );
$pdf->addCols( $cols);
$cols=array( "Item Code"    => "R",
             "Product Name <br />UOM"  => "R",
             "Description"     => "C",
             "Price"      => "R",
             "Qty" => "R",
             "Disc%"          => "R",
              "Sub-Total"          => "R",
             "NLSP<br /> Rate"     => "L",
              "Amt"     => "L",
               "LSLD Rate"     => "L",
              "SAmt"     => "L",
               "MSLS Rate"     => "L",
              "IAmt"     => "L",
              );
$pdf->addLineFormat( $cols);
$pdf->addLineFormat($cols);
$y    = 133;

函数addCols( $cols)和addLineFormat与fpdf脚本中的相同。