未捕獲的SyntaxError：意外的標記<CI中

Question

我目前工作的笨圖表，但我得到一個錯誤，如：

Uncaught SyntaxError: Unexpected token <

和圖表不加載顯示空白。

var data_course_stats = google.visualization.arrayToDataTable([ 
      ['Course', 'Time spent',{ role: 'style' }], 
      <?php 
      $i=0; 
      foreach ($timespent_stats as $course) { $course = (object)$course; 
      $color_val = 'green'; 
      if(count($i<count($timespent_stats))) 
       $color_val = $colors[$i++]; 
      ?> 
     ['<?php echo $course->title;?>', <?php echo $course->spent_seconds/60;?>,'<?php echo $color_val; ?>'], 
     <?php } ?> 
     ]); 

     var options_course_stats = { 
      title: 'Course Wise Spent Time in Minutes', 
      curveType: 'function', 
      height: 400, 
      bar: {groupWidth: "50%"}, 
      legend: { position: "none" }, 
}; 

Answer 1

雖然你已經接受了答案，我想補充的另一種技術是比以前的更簡單一點。你可以像<?=執行<?php echo something; ?>回聲，所以你可以簡單地做到這一點<?= something ?>

<?php 
    $i=0; 
    foreach ($timespent_stats as $course) { 
    $course = (object)$course; 
    $color_val = 'green'; 

    if(count($i<count($timespent_stats))) 
     { 
     $color_val = $colors[$i++]; 
?> 
     [<?= $course->title ?>, <?= $course->spent_seconds/60 ?>, <?= $color_val ?>] 
<?php 
     } 
    } 
?> 

Answer 2

對於更長的塊，爲了保持PHP打開 - 您遇到麻煩因爲您正在混合並匹配打開和關閉。更改此：

 <?php 
     $i=0; 
     foreach ($timespent_stats as $course) { $course = (object)$course; 
     $color_val = 'green'; 
     if(count($i<count($timespent_stats))) 
      $color_val = $colors[$i++]; 
     ?> 
    ['<?php echo $course->title;?>', <?php echo $course->spent_seconds/60;?>,'<?php echo $color_val; ?>'], 
    <?php } ?> 

這樣：

<?php 
     $i=0; 
     foreach ($timespent_stats as $course) { 
     $course = (object)$course; 
     $color_val = 'green'; 
     if(count($i<count($timespent_stats))) { 
      $color_val = $colors[$i++]; 

      echo "['" . $course->title . "','" . 
         $course->spent_seconds/60 . "','" . 
         $color_val . "']"; 
     } 
     } 
     ?>