问For-each中的PHP Increment适用于按钮标签，但不适用于发布的URL

EN

<?php

$images = glob($directory . "*.*");
 echo "<div class='col-md-12' align='center'><div class='col-md-10'>
       <table class='table table-bordered table-striped'>
      <tr>
        <th width='65%'>Filename</th>
        <th width='20%'>Edit</th>
        <th width='15%'>Refer</th>
      </tr>";
    $dir = "Capability_Request/*";
    $zed = 1;


    foreach(glob($dir) as $file)
    {

        $base = basename($file);

        echo "<tr><td>";
        if(!is_dir($file)) { echo basename($file);}
        echo "</td><td><button type='button' class='btn btn-primary btn- 
             small' data-toggle='modal' data-target='#exampleModal$zed'>
          $zed

        </button> </td><td>

        <!-- Button trigger modal -->
        <button type='button' class='btn btn-primary' data-toggle='modal' 
         data-target='#exampleModalCenter'>
          $zed
        </button>

        <!-- Modal -->
        <div class='modal fade' id='exampleModalCenter' tabindex='-1' 
           role='dialog' aria-labelledby='exampleModalCenterTitle' aria- 
          hidden='true'>
          <div class='modal-dialog modal-dialog-centered' role='document'>
            <div class='modal-content'>
              <div class='modal-header'>
                <h5 class='modal-title' id='exampleModalLongTitle'>Refer 
                  Capability to UNF</h5>
                <button type='button' class='close' data-dismiss='modal' 
                aria-label='Close'>
                  <span aria-hidden='true'>&times;</span>
                </button>
              </div>
              <div class='modal-body'>";



                $url = "AuthorizeCapabilityRequest.php?".$zed;
                echo "<form action='$url' method='post'>";                  

                echo "<h6>If you would like to refer the capability to the 
                     UNF, and accept the capability request, select this 
                     button:</h6>";

                echo "<input class='btn btn-success btn-block' type='submit' 
                    value='Submit'>";
                echo "<hr>";
                echo "<h6>If you would like to refer the capability to the 
                      UNF, but deny the capability request, select this 
                      button:</h6>";
                echo "<button type='button' class='btn btn-warning btn- 
                      block'>Refer</button>";
                echo "<hr>";
                echo "<h6>If you would like to deny the capability referral 
                     to the UNF, select this button:</h6>";
                echo "<button type='button' class='btn btn-danger btn- 
                    block'>Deny</button>";
                echo "<div class='modal-footer'>";

                echo "<button type='button' class='btn btn-secondary' data- 
                    dismiss='modal'>Cancel</button>";

              echo "</form>";
              echo "</div>";                  
            echo "</div>";
          echo "</div>";
        echo "</div>";
    echo "</td></tr>";

    $zed++;             
    }       
echo "</table></div></div>";