Question

我是一个php初学者，我找不到为什么我的代码不断抛出解析器错误。希望你们能帮助我。

错误出现在代码的末尾，并且是“意外的，期待的是（T_WHILE）” 代码就在这里......

<html>
  <?php
     $db = new PDO('mysql:host=localhost;dbname=testit;charset=UTF-8', 'testit', 'testit', array(PDO::ATTR_EMULATE_PREPARES => false,
 PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION));

     $stmt = $db->query("SELECT * FROM TestTable");

     $amdata = array();
     $ctrinner = 0;
     $ctrouter = -1;
     $prevweek = "9999";


     while($row = $stmt->fetch(PDO::FETCH_ASSOC)) do {
        if ($prevweek !== $row['WeekNumber']) {
            $ctrouter++;
            $ctrinner = 0;
            $amdata[$ctrouter][$ctrinner] = 'week: "'+$row['WeekNumber']+'"';
       }
        $ctrinner++;
        $amdata[$ctrouter][$ctrinner] = $row['XAxisCategory']+': '+$row['YAxisValue'];
        $prevweek = $row['WeekNumber'];
     }
     // Whatever comes aftert this line throws a php error 'Unexpected <whatever I put there>, expecting while (T_WHILE)....'
     // Even if I put nothing it complains about Unexpected '?>' expecting while (T_WHILE)  ?>
?>
</html>

Answer 1

你的do-while循环错误。

do-while循环如下所示：

 do {
     /* loop  body */
 } while (/* condition */);

但在您的特殊情况下，我只是省略do关键字：

while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
   /* loop body */
}

php解析器错误我无法解决

1 个答案: