我需要指定一個unqiue類到一個PHP MYSQL表TR TR

Question

我如何分配一個對所有 唯一的類ID ID需要保持停留，即使在刷新時我將用它們來設置表的樣式。

這裏是代碼我使用：

while($row = mysql_fetch_array($result2)) 
    { 
echo "<tr id='centered' class='"; echo "'"; 
echo "<td>" . $row['Year_9'] . "</td>"; 
echo "<td>" . $row['Year_8'] . "</td>"; 
echo "<td>" . $row['Year_7'] . "</td>"; 
echo "<td>" . $row['Year_6'] . "</td>"; 
echo "<td>" . $row['Year_5'] . "</td>"; 
echo "<td>" . $row['Year_4'] . "</td>"; 
echo "<td>" . $row['Year_3'] . "</td>"; 
echo "<td>" . $row['Year_2'] . "</td>"; 
echo "<td>" . $row['Year_1'] . "</td>"; 
echo "<td>" . $row['Year_0'] . "</td>"; 

Answer 1

也許使用計數器，多值類？

$i = 1; 

while($row = mysql_fetch_array($result2)) 
{ 
    $secondClass = 'abc' + $i; 

    echo "<tr id='centered' class='firstClass $secondClass'>"; 
    ... 
    $i++; 
}