如何按字母顺序排列这些代码

如何按字母顺序排列，请帮助我，请提前感谢

<?php
    $result = getcaseList("Anaphylaxis");
?>
    <div role="tabpanel" class="tab-pane" id="emergency">
        <div class="container-fluid">
           <div class="panel-group" id="accordion">
<?php
    error_reporting(E_ALL ^ E_NOTICE);
    foreach($result as $case_data)
    {
?>
        <div class="panel panel-default">
            <div class="panel-heading">
                <h4 class="panel-title">
                    <a data-toggle="collapse" data-parent="#accordion" href="#collapse<?php echo $case_data['case_id'];?>">
<?php echo $case_data['case_name'];?><br />
                    </a>
                </h4>
            </div>
            <div id="collapse<?php echo $case_data['case_id'];?>" class="panel-collapse collapse ">
                <div class="panel-body">
                <h4></h4> <?php echo $case_data['case_description'];?>
            </div>
            <div class="panel-body">
                <h4></h4><?php echo $case_data['case_causes'];?>
            </div>