我的div一直在其父母之外回应

Question

我有这个div，它运行一些php然后将三组参数中的一组传递给一个函数。该函数返回一个echoed div。出于某种原因，这个div出现在父级下方而不是内部。这看起来非常简单，这就是为什么它给我带来了太多麻烦。我错过了什么？

这是父div：

<div class='panel-body' hrid='<?php echo $homeroom['homeroom_id'] ?>'>
    <!-- figure out $class, $lunchroom, and $order for each div containing student -->
    <?php 
    $students = get('student', ['homeroom_id' => $homeroom['homeroom_id']], 'student_id', '', 'API')->fetchAll();
    foreach($students as $student){
        $class='';
        $dest = '';
        if(in_array($student['student_id'], $detentionIds)){
            echo returnStudent('detention', $firstRoundDetention, $homeroom, $notUsed, $student, 1);                            
        }elseif(in_array($student['student_id'], $hwIds)){
            echo returnStudent('homework-club', $firstRoundHC, $homeroom, $notUsed, $student, 2);
        }else{
            echo returnStudent('recess', $firstRoundRecess, $homeroom, $notUsed, $student, 3);
        } 
    } ?>  
</div>

这是生成要在父级内回显的div的函数：

function returnStudent($class, $array, $homeroom, $notUsed, $student, $dataSort){
    if($homeroom['homeroom_id'] == $array['room1']){
        $class.= ' not-moved';
        $dest = $array['room1'];
        $suffix = 'homeroom matches room1';
    }else{
        if(in_array($homeroom['homeroom_id'], $array['rooms'])){
            $class.= ' moved';
            $dest = $array['room1'];
            $hr = get('homeroom', ['homeroom_id' => $array['room1']], 'homeroom_id', 1, 'API')->fetch();
            $suffix = $hr['homeroom_name'];
        }else{
            if($notUsed['homeroom_id'] == $homeroom['homeroom_id']){
                $class.= ' not-moved';
                $dest =  $homeroom['homeroom_id'];
                $suffix = 'does not move';
            }else{
                $class.= ' moved';
                $dest = $notUsed['homeroom_id'];
                $hr = get('homeroom', ['homeroom_id' => $notUsed['homeroom_id']], 'homeroom_id', 1, 'API')->fetch();
                $suffix = $hr['homeroom_name'];
            }
        }
    } 
	return "<div 
				class='alert student " . $class ."' 
				destination = '" . strtolower($dest) ."'
				data-sort = '" . $dataSort . "' 
				studentid='" . $student['student_id'] ."'
				homeroomid = '" . $student['homeroom_id'] . "'>

				" . $student['student_fname'] . " " . $student['student_lname'] . " - " . $suffix ."

				<!-- close student div -->
				</div>";
}