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我正在嘗試在此程式碼中使用 echo

<?php
                            
    require 'connect.php';
    $query = mysqli_query($conn, "SELECT * FROM `videos`") or die(mysqli_error());
    while($fetch = mysqli_fetch_array($query)){
           $id= $fetch['id'];
?>
    <?php echo "
        <li class='col-lg-4 col-md-6 col-dm-12'>
        <div class='da-card box-shadow'>
        <div class='da-card-photo'>
            <img src=' echo $fetch['video_name']' alt=''>
            <div class='da-overlay'>
                <div class='da-social'> 
                    <h4 class='mb-10 color-white pd-20'></h4>
                    <ul class='clearfix'>
                        <li>
                            <a href='' data-fancybox='images'><i class='fa fa-picture-o'></i></a>
                        </li>
                        <li>
                            <a href='#'><i class='fa fa-link'></i></a>
                        </li>
                    </ul>
                </div>
            </div>
        </div>
    </div>
        </li>
    "; ?>
    <?php
    }
?>

我收到此錯(cuò)誤Parse 錯(cuò)誤：語(yǔ)法錯(cuò)誤，意外的字串內(nèi)容“”，期望“-”或標(biāo)識(shí)符或變數(shù)或數(shù)字位於C:\xampp\htdocs\desk\gallery.php 行572 為什麼會(huì)出現(xiàn)這個(gè)錯(cuò)誤？ .................................................. .... …………