PHP交替颜色

Question

  $dbc = mysql_connect('localhost','root','') or die (mysql_error());
  mysql_select_db('payroll') or die (mysql_error());
 $sql = "SELECT * FROM employee ORDER BY employee_id DESC";

  $result = mysql_query($sql);

  while($row = mysql_fetch_array($result)) {

  echo "
  <tr>
  <td style=\"padding-left: 20px; border-bottom: 1px solid #999; border-right: 1px solid #999;\">".$row['first_name']." ".$row['last_name']."</td>
  <td style=\"text-align: center; border-bottom: 1px solid #999; border-right: 1px solid #999;  padding-top: 2px ; padding-bottom: 3px ;\"><input type=\"button\" name=\"edit\" value=\"Edit\" class=\"selbtn\">&nbsp;<input type=\"button\" name=\"delete\" value=\"Delete\" class=\"selbtn\"></td>
  </tr>
  ";

  }

我想在循环中添加交替颜色.我应该添加什么代码？

Answer 1

$rowCount = 0;
$colorOne = '#ffffff';
$colorTwo = '#f3f3f3';

while($row = mysql_fetch_array($result)){
        $rowColor = ($rowCount % 2) ? $colorOne : $colorTwo; 
        echo "<element bgcolor='$rowColor'></element>";
$rowCount++;
}

Edited after @Jayrox comment.