Question

我正在努力学习我的php脚本，我用这个作为参考：http://www.dynamicdrive.com/forums/showthread.php?60691-Listing-file-in-a-directory-problem。

我已经对它进行了调整以适应我，但是我似乎无法解决如何解决这个PHP错误：

PHP警告：sort（）期望参数1为数组，给定
为null

我理解错误在第83行

排序（$ dirArray）;

但是我不知道如何修复错误，因为我希望禁止的文件功能保持原样，如果我改变它：

  // Gets each entry
  while($entryName = readdir($myDirectory))
  {
    if (is_file($entryName))
    {
      $extensions = explode(".", $entryName);
        if(!in_array($extensions[1],$forbiddenExtensions))
        {
              $dirArray[] = $entryName;
        }
    }
  }

对此：

while($entryName = readdir($myDirectory)) 
{
    $dirArray[] = $entryName;
}

我知道会没事的。我100％肯定他们的一个简单的解决方案，我的大脑只是炒了我不能再思考156次重新编辑，重新上传，我需要帮助。有人可以帮我找一下我的$ forbiddenExtensions的解决方法吗？

<?php
  // Open this directory
  // (NOTE: To open same folder as this file use($directory = "./";)
  $directory = "./files/";

  // Selects $directory to open
  $myDirectory = opendir($directory);

  // Sets forbidden extensions
  $forbiddenExtensions = array("php", "html", "log");

  // Gets each entry
  while($entryName = readdir($myDirectory))
  {
    if (is_file($entryName))
    {
      $extensions = explode(".", $entryName);
        if(!in_array($extensions[1],$forbiddenExtensions))
        {
          $dirArray[] = $entryName;
        }
    }
  }

  // This function separates the extension from the rest of the file name and returns it
  function findExtensions ($filename)
  {
    $filename = strtolower($filename) ;
    $extensions = explode(".", $filename) ; //$extensions = split("[/\\.]", $filename) ;
    $n = count($extensions)-1;
    $extensions = $extensions[$n];
    return $extensions;
  }

  // Closes $directory
  closedir($myDirectory);

  // Counts elements in array
  $indexCount = count($dirArray);
  Print ("$indexCount files<br>\n"); //Display how many files were counted

  // Sorts the Array of files
  sort($dirArray);

  // Prints the Array of files
  print("<table width='100%' cellspacing='10'>
  <tr>
    <td class='database_head'>Filename</td>
    <td class='database_head'>Filetype</td>
    <td class='database_head'>Filesize</td>
  </tr>\n");

  // Loops through the array of files and display them all
  for($index=0; $index < $indexCount; $index++) 
  {
    // Don't list hidden files
    if (substr($dirArray[$index], 0, 1) != ".")
    {
      print("<tr><td><a href=\"$dirArray[$index]\">$dirArray[$index]</a></td>");
      print("<td>");
      print(findExtensions($dirArray[$index]));
      print("</td>");
      print("<td>");
      print(filesize($directory.$dirArray[$index]));
      print("</td>");
      print("</tr>\n");
    }
  }
  print("</table>\n");
?>

Answer 1

试试这个：

<?php
  $i=0;
  $dirArray = array();
  // Open this directory
  // (NOTE: To open same folder as this file use($directory = "./";)
  $directory = "./files/";

  // Selects $directory to open
  $myDirectory = opendir($directory);

  // Sets forbidden extensions
  $forbiddenExtensions = array("php", "html", "log");

  // Gets each entry
  while($entryName = readdir($myDirectory))
  {
    if (is_file($entryName))
    {
      $extensions = explode(".", $entryName);
        if(!in_array($extensions[1],$forbiddenExtensions))
        {
          $dirArray[$i++] = $entryName;
        }
    }
  }

  // This function separates the extension from the rest of the file name and returns it
  function findExtensions ($filename)
  {
    $filename = strtolower($filename) ;
    $extensions = explode(".", $filename) ; //$extensions = split("[/\\.]", $filename) ;
    $n = count($extensions)-1;
    $extensions = $extensions[$n];
    return $extensions;
  }

  // Closes $directory
  closedir($myDirectory);

  // Counts elements in array
  $indexCount = count($dirArray);
  Print ("$indexCount files<br>\n"); //Display how many files were counted

  // Sorts the Array of files
  sort($dirArray);

  // Prints the Array of files
  print("<table width='100%' cellspacing='10'>
  <tr>
    <td class='database_head'>Filename</td>
    <td class='database_head'>Filetype</td>
    <td class='database_head'>Filesize</td>
  </tr>\n");

  // Loops through the array of files and display them all
  for($index=0; $index < $indexCount; $index++) 
  {
    // Don't list hidden files
    if (substr($dirArray[$index], 0, 1) != ".")
    {
      print("<tr><td><a href=\"$dirArray[$index]\">$dirArray[$index]</a></td>");
      print("<td>");
      print(findExtensions($dirArray[$index]));
      print("</td>");
      print("<td>");
      print(filesize($directory.$dirArray[$index]));
      print("</td>");
      print("</tr>\n");
    }
  }
  print("</table>\n");
?>

PHP警告：sort（）期望参数1为数组，给定为null

1 个答案: