PHP格式化表头

Question

此代码读取用于创建表的CSV文件。它工作正常。

如何将第一行格式化为标题样式（来自表CSS）？

<table  id="myTable" class="tablesorter animated fadeInDown">    <!--   cellspacing='0' is important, must stay -->

 <tbody>
    <?php
      $lines = file('graphdata/IndicForTableVsOthers.csv');  


      foreach ($lines as $lineNum => $line) {
    if($lineNum == 0) {
     print "     <tr id=\"tr" . $lineNum . "\">";
    }
        print "     <tr id=\"tr" . $lineNum . "\">";

        $tokens = str_getcsv($line);          

        print "<td style=\"width: 300px;\">" . trim($tokens[0]) . "</td>";      
        print "<td style=\"width: 100px;\">" . trim($tokens[1]) . "</td>";  
        print "<td style=\"width: 100px;\">" . trim($tokens[2]) . "</td>";
        print "<td style=\"width: 100px;\">" . trim($tokens[3]) . "</td>";
        print "<td style=\"width: 100px;\">" . trim($tokens[4]) . "</td>";


        print "</script>\n";

      }
    ?>

    </tbody>