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我寫了一個PHP腳本來刪除在gridview中選擇的文件。這是我第一次做到這一點。該腳本在我的本地開發機器上正常工作，但我不知道這是否是正確的方式。我想知道刪除文件時可能遇到的問題，以及如何修改此問題以防止出現問題。PHP取消鏈接功能幫助
我一直在尋找在這個頁面獲得的基本思想：http://www.php.net/manual/en/function.unlink.php
<?php
// get required includes
require_once(ROOT_PATH.'user/controls/snippets/error_messages.php');
require_once(ROOT_PATH.'user/controls/accordion/get_user_name.php');
// ------------------------------------------------------------
// DELETE SELECTED FILES
// ------------------------------------------------------------
if(isset($_POST['delete_file']) && isset($_POST['checked2']))
{
$checked = array_map('intval',$_POST['checked2']);
$delete_list = implode(", ", $checked);
// DB: get file names to delete
$get_file_names = mysqli_query($conn, "SELECT FileName FROM downloads WHERE DownloadId IN ($delete_list) AND UserName = '$user_name'")
or die($dataaccess_error);
// delete files from server
while($row = mysqli_fetch_array($get_file_names))
{
$dir = DOWNLOAD_DIRECTORY;
$file_name = $row['FileName'];
$file_to_delete = $dir.$file_name;
unlink($file_to_delete);
}
// DB: delete selected file references from db
$delete_selected = mysqli_query($conn, "DELETE FROM downloads WHERE DownloadId IN ($delete_list) AND UserName = '$user_name'")
or die($dataaccess_error);
if(mysqli_affected_rows($conn) > 0)
{
$effected_rows = mysqli_affected_rows($conn);
echo "<div class='msgBox2b noBorder'>SUCCESS: ($effected_rows) FILE(S) have been DELETED..</div>";
}
}
elseif(isset($_POST['delete_file']) && !isset($_POST['checked2']))
{
echo $msg_error;
}
?>
謝謝！
編輯：這樣會更好嗎？
$fh = fopen($file_to_delete, 'w') or die($failed_to_open_file);
fclose($fh);
unlink($file_to_delete);