5

有人可以使用以下代码向我解释如何在上传过程中将图像文件重命名为其他名称吗？

这是我正在使用的。

上传者.php 

<?php
include($_SERVER['DOCUMENT_ROOT'] . "/connections/dbconnect.php");
$dataType = mysql_real_escape_string($_POST["dataType"]);
$title = mysql_real_escape_string($_POST["title"]);
$fileName = basename($_FILES["image"]["name"]);
$target_path = ($_SERVER['DOCUMENT_ROOT'] . "/images/gallery/".$fileName);
if (file_exists($target_path))
{
    echo "An image with that file name already exists.";
}
elseif (move_uploaded_file($_FILES["image"]["tmp_name"], $target_path))
{
    // The file is in the images/gallery folder. Insert record into database by
    // executing the following query:
     $sql="INSERT INTO images (data_type, title, file_name)"."VALUES('$dataType','$title','$fileName')";
     $retval = mysql_query($sql);

    echo "The image was successfully uploaded and added to the gallery :) <a href='index.php'>Add another image</a>";


}
else
{
    echo "There was an error uploading the file, please try again!";
}
?>

然后这是我将图像上传到画廊的代码。

<form enctype="multipart/form-data" action="uploader.php" method="POST">


        Category: <select class="text" name="dataType">
        <option value="treeremoval" selected="selected">treeremoval</option>
        <option value="treetrimming" >treetrimming</option>
        <option value="treebracing" >treebracing</option>
        <option value="stumpgrinding" >stumpgrinding</option>
        <option value="firewood" >firewood</option>
        <option value="cleanup" >cleanup</option>
        </select><br />
<br />




    Caption: <input type="text" name="title"><br />
<br />

    Image to upload: <input type="file" name="image"><br />
<br />




    <input type="submit" value="Upload">
</form>

我对使用 php 和 mysql 非常陌生，因此将不胜感激。我也有一些其他问题，但我想我应该一次问一个。=)

谢谢你！

4

5 回答 5

5

我会尝试这样的事情，您将创建一个唯一的 id 并将文件的扩展名附加到它，如果该名称存在，则循环直到您有一个不存在的名称，然后您移动文件。

<?php
include($_SERVER['DOCUMENT_ROOT'] . "/connections/dbconnect.php");

$dataType = mysql_real_escape_string($_POST["dataType"]);
$title = mysql_real_escape_string($_POST["title"]);

$fileData = pathinfo(basename($_FILES["image"]["name"]));

$fileName = uniqid() . '.' . $fileData['extension'];

$target_path = ($_SERVER['DOCUMENT_ROOT'] . "/images/gallery/" . $fileName);

while(file_exists($target_path))
{
    $fileName = uniqid() . '.' . $fileData['extension'];
    $target_path = ($_SERVER['DOCUMENT_ROOT'] . "/images/gallery/" . $fileName);
}

if (move_uploaded_file($_FILES["image"]["tmp_name"], $target_path))
{
    // The file is in the images/gallery folder. Insert record into database by
    // executing the following query:
     $sql="INSERT INTO images (data_type, title, file_name)"."VALUES('$dataType','$title','$fileName')";
     $retval = mysql_query($sql);

    echo "The image was successfully uploaded and added to the gallery :) <a href='index.php'>Add another image</a>";


}
else
{
    echo "There was an error uploading the file, please try again!";
}

?>

于 2013-07-11T20:45:23.203 回答
2

你在做move_uploaded_file($_FILES["image"]["tmp_name"], $target_path)

你$target_path来自变量$fileName

将文件名从

$fileName = basename($_FILES["image"]["name"]);

至

'myfilename'
于 2013-07-11T20:34:27.553 回答
0

请尝试以下代码：

$sql =mysql_query("select * from table ");
$result = mysql_num_rows($sql) +1;

$newfilename = rename("$oldfilename", "$newfilename");
于 2015-06-16T04:40:02.447 回答
0

//图片上传 $pro_image = $_FILES['image']['name']; $pro_image_tmp = $_FILES['image']['tmp_name'];

        $fileType = $_FILES["image"]["type"];  
        $fileSize = $_FILES["image"]["size"];  
        $fileErrorMsg = $_FILES["image"]["error"];  

         $fileName = preg_replace('#[^a-z.0-9]#i', '', $pro_image); 
         $nwtourimg = explode(".", $fileName);
         if (!$pro_image_tmp) { // if file not chosen
            echo "ERROR: Please browse for a file before clicking the upload button.";
            exit();
        } else if($fileSize > 5242880) { // if file size is larger than 5 Megabytes
            echo "ERROR: Your file was larger than 5 Megabytes in size.";
            unlink($pro_image_tmp); // Remove the uploaded file from the PHP temp folder
            exit();
        } else if (!preg_match("/.(gif|jpg|png|jpeg)$/i", $fileName) ) {
             // This condition is only if you wish to allow uploading of specific file types    
             echo "ERROR: Your image was not .gif, .jpg, or .png.";
             unlink($pro_image_tmp); // Remove the uploaded file from the PHP temp folder
             exit();
        } else if ($fileErrorMsg == 1) { // if file upload error key is equal to 1
            echo "ERROR: An error occured while processing the file. Try again.";
            exit();
        }

         $fileExt = end($nwtourimg);
         $fileName = time().rand().".".$fileExt;


         move_uploaded_file("$pro_image_tmp","upload/$fileName");
            //image upload end
于 2020-03-17T07:37:24.523 回答
0

我建议上传安全的图像格式并限制文件大小

           //image upload
            $pro_image = $_FILES['image']['name'];
            $pro_image_tmp = $_FILES['image']['tmp_name'];

            $fileType = $_FILES["image"]["type"];  
            $fileSize = $_FILES["image"]["size"];  
            $fileErrorMsg = $_FILES["image"]["error"];  

             $fileName = preg_replace('#[^a-z.0-9]#i', '', $pro_image); 
             $nwtourimg = explode(".", $fileName);
             if (!$pro_image_tmp) { // if file not chosen
                echo "ERROR: Please browse for a file before clicking the upload button.";
                exit();
            } else if($fileSize > 5242880) { // if file size is larger than 5 Megabytes
                echo "ERROR: Your file was larger than 5 Megabytes in size.";
                unlink($pro_image_tmp); // Remove the uploaded file from the PHP temp folder
                exit();
            } else if (!preg_match("/.(gif|jpg|png|jpeg)$/i", $fileName) ) {
                 // This condition is only if you wish to allow uploading of specific file types    
                 echo "ERROR: Your image was not .gif, .jpg, or .png.";
                 unlink($pro_image_tmp); // Remove the uploaded file from the PHP temp folder
                 exit();
            } else if ($fileErrorMsg == 1) { // if file upload error key is equal to 1
                echo "ERROR: An error occured while processing the file. Try again.";
                exit();
            }

             $fileExt = end($nwtourimg);
             $fileName = time().rand().".".$fileExt;


             move_uploaded_file("$pro_image_tmp","upload/$fileName");
                //image upload end
于 2017-06-06T07:51:57.897 回答