使用以下代码，有人能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？
以下是我正在使用的内容。
上传器.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!";
}
?>
下面是我将图片上传到图库的代码。
<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>
我是php和mysql的新手，所以如果有任何帮助，我将不胜感激。我还有一些其他问题，但我想我应该一次问一个
谢谢！
我会尝试这样的方法，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!";
}
？>
您正在执行move_uploaded_file($_FILES["image"]["tmp_name"], $target_path)
您的$target_path来自变量$fileName
从更改文件名
$fileName = basename($_FILES["image"]["name"]);
至
'myfilename'
请尝试此代码：
$sql =mysql_query("select * from table ");
$result = mysql_num_rows($sql) +1;
$newfilename = rename("$oldfilename", "$newfilename");
我建议上传一个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
//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