Question

我试图取消链接与mysql表记录ID链接的指定图像。我可以删除mysql上的记录。运行此脚本时出现内部服务器错误，

查询：

我有两个摄像头in_cam和out_cam文件夹我试图将in_cam中的图像换成out_cam我的脚本将图像从in_cam复制到out_cam但是图像不会在in_cam中删除。

 Put the entry into the other table
            $sql = "INSERT INTO $newCamTable (plate, nread, datetime, millisecs, nationality, image_name,image) SELECT plate, nread, datetime, millisecs, nationality, image_name,image  FROM $camTable $
            logit($sql);
            $result = $conn->Execute($sql);
            if (!$result)
              {
                print $conn->ErrorMsg();
              }

            $sql = "SELECT id FROM $newCamTable ORDER BY id DESC";
            $result = $conn->Execute($sql);
            if (!$result)
              {
                print $conn->ErrorMsg();
              }
            $row = $result->fields;
            $newId = $row['id'];

            $sql = "UPDATE $newCamTable SET name=\"$new_cam_name\", camera_id=\"$new_cam_id\" WHERE id=\"$newId\"";
            logit($sql);
            $result = $conn->Execute($sql);
            if (!$result)
              {
                print $conn->ErrorMsg();
              }
    This is what I AM TRYING TO DO.

            sql = """SELECT id FROM  $camTable where id = \"$tableEntryId\"  LIMIT 1";
            logit($sql);
            $result  = $conn->Execute($sql);
            $id =  etCommonGetImagePath($conn, $camName, $id) {
            $serverDir = $_SERVER['DOCUMENT_ROOT'];
            $imagesTop = "/cam_images";

            $idArray = str_split(strval($id));
            $idString = implode('/', $idArray);

            $webPath = $imagesTop . "/" . $camName . "/" . $idString . ".jpg";
            $full_path = $serverDir . $webPath;

            if (file_exists($full_path)) {
            unlink($idString);
            }*/


            // Delete the entry from the camera table
            $sql = "DELETE FROM $camTable WHERE id=\"$tableEntryId\" LIMIT 1";
            logit($sql);
            $result = $conn->Execute($sql);

Answer 1

您必须使用服务器上的路径删除图片，而不是网址。

unlink('/var/www/test/folder/images/image_name.jpeg');

Answer 2

以下内容应该有所帮助

realpath - 返回规范化的绝对路径名 is_readable - 判断文件是否存在且可读 unlink - 删除文件

通过realpath运行文件路径，然后检查返回的路径是否存在，如果存在，则取消链接。

从php取消链接相关图像

2 个答案: