我有一个表单，允许用户上传文件以及其他一些数据。然后将其传递给PHP文件，该文件尝试上载文件，然后将一些传递的数据以及文件位置写入JSON索引。但是，我尝试上传的图像中有一半以上只会打印
“抱歉，上传文件时出错。”
这是我的全部错误。奇怪的是，有些图像会同时显示每个错误代码，包括PHP错误
“Undefined index：img_upload”。
使用echo语句进行的一些检查表明，在这些情况下，图像数据似乎甚至没有传递给PHP函数。但是，当发生这些错误时，上传最终会成功。
PHP：
<?php
#Image code
$target_dir = "../BlogPosts/post_images/";
$target_file = $target_dir . basename($_FILES["img_upload"]["name"]);
$uploadOk = 1;
$imageFileType = pathinfo($target_file, PATHINFO_EXTENSION);
// Check if image file is a actual image or fake image
if (isset($_POST["submit"])) {
$check = getimagesize($_FILES["img_upload"]["tmp_name"]);
if ($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
} else {
echo "File is not an image.";
$uploadOk = 0;
}
}
// Check if file already exists
if (file_exists($target_file)) {
echo "Sorry, file already exists.";
$uploadOk = 0;
}
// // Check file size
//if ($_FILES["img_upload"]["size"] > 500000) {
// echo "Sorry, your file is too large.";
// $uploadOk = 0;
//}
// Allow certain file formats
if ($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg" && $imageFileType != "gif") {
echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
$uploadOk = 0;
}
// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
} else {
if (move_uploaded_file($_FILES["img_upload"]["tmp_name"], $target_file)) {
echo "The file " . basename($_FILES["img_upload"]["name"]) . " has been uploaded.";
#All other code
$postbody = $_POST["newpost_body"];
$posttitle = $_POST["newpost_title"];
#Preparing the post summary
$postsummary = substr($postbody, 0, 175);
$postsummary = $postsummary . "...";
$postsummary = strip_tags($postsummary);
$postsummary = preg_replace("/"/", "\"", $postsummary);
$postsummary = preg_replace("/'/", "'", $postsummary);
#Uploading post text
$filepath = dirname(__FILE__) . "/../BlogPosts/";
$fileid = time();
$filename = $filepath . $fileid . ".html";
$var_str = var_export($postbody, true);
$var = "$postbody";
file_put_contents($filename, $var);
$posts = json_decode(file_get_contents(dirname(__FILE__) . "/../BlogPosts/posts.json"), true);
#$posts->append($fileid);
$filedata = [
"ID" => $fileid,
"Title" => $posttitle,
"Date" => gmdate("m.d.y", $fileid),
"Summary" => $postsummary,
"Thumb" => $target_file,
];
array_push($posts['posts'], $filedata);
$arr1 = $posts;
file_put_contents(dirname(__FILE__) . "/../BlogPosts/posts.json", json_encode($arr1));
# array.json => {"a":1,"b":2,"c":3,"d":4,"e":5}
header('Location: #/blog');
} else {
echo "Sorry, there was an error uploading your file.";
}
}
HTML表单：
<form id="bpost_form" class="dropzone" method="post" action="/admin/writetofile.php" style="text-align:center" enctype="multipart/form-data">
<input type="text" name="newpost_title"/>
<br>
<input type="file" name="img_upload" id="fileToUpload">
<br>
<textarea name="newpost_body" id="newpost" rows="10" cols="80">
This is my textarea to be replaced with CKEditor.
</textarea>
<script>
// Replace the <textarea id="editor1"> with a CKEditor
// instance, using default configuration.
CKEDITOR.replace('newpost');
</script>
<input type="submit"
value="Save"/>
</form>
答案 0 :(得分：3)
在这种情况下，我个人会将脚本分解为不同的任务，在本例中为两个。一个上传，第二个来处理你所指的#All other code。对于这个例子，我选择通过一个包含错误的类进行上传。它将根据上载成功返回true或false，其他代码将根据该响应执行。它还将记录报告中的错误。这可能有用也可能没用。它基本上就是你所拥有的，只是重新组织：
<强> class.UploadFileEngine.php
class UploadFileEngine
{
public $errors;
public $fileName;
private $target_dir;
private $fileArray;
private $fileTypes;
private $target_file;
public function __construct($filetypes = array("jpg","jpeg","gif","png"))
{
// Assign accepted file types here
$this->fileTypes = $filetypes;
// Set the default input name from your form
$this->setInput();
// Set the errors array by default
$this->errors = array();
}
public function setDestination($target_dir = false, $make = true)
{
// Assign the destination
$this->target_dir = $target_dir;
// If the target has been left empty, don't do anything
if(empty($this->target_dir))
return $this;
// If the folder does not exist, try and make it
if(!is_dir($this->target_dir) && $make)
mkdir($this->target_dir,0755,true);
// Return this object for method-chaining purposes
return $this;
}
public function setInput($inputName = 'img_upload')
{
// Assign the input name (you can change this dynamically)
$this->inputName = $inputName;
$this->fileArray = (!empty($_FILES[$this->inputName]))? $_FILES[$this->inputName] : array();
return $this;
}
public function uploadFile()
{
// If there is no upload, just return false
if(empty($this->fileArray))
return false;
// Set up the file
// This is all pretty much the same as yours...
$this->fileName = basename($this->fileArray["name"]);
$this->target_file = $this->target_dir.$this->fileName;
$check = (!empty($this->fileArray["tmp_name"]))? getimagesize($this->fileArray["tmp_name"]) : false;
$ext = pathinfo($this->target_file, PATHINFO_EXTENSION);
if($check !== false) {
if(!file_exists($this->target_file)) {
if(in_array($ext, $this->fileTypes))
return move_uploaded_file($this->fileArray["tmp_name"], $this->target_file);
else
$this->errors[] = 'File extention invalid. Must be '.implode(", ",$this->fileTypes);
}
else
$this->errors[] = 'File already exists';
}
else
$this->errors[] = "File is not an image";
return false;
}
public function getTargetFile()
{
return (!empty($this->target_file))? $this->target_file : false;
}
}
使用：
<?php
if(isset($_POST["submit"])) {
include_once("class.UploadFileEngine.php");
$destination = "../BlogPosts/post_images/";
$uploader = new UploadFileEngine();
$success = $uploader ->setDestination($destination)
->uploadFile();
$targetFile = $uploader->getTargetFile();
if($success) {
// do rest of code here
}
else
echo implode('<br />',$uploader->errors);
}
答案 1 :(得分：0)
另请注意，如果您使用的是dropzone.js，则需要设置dropzone使用的文件名。在您的html表单中，您有<input type="file" name="img_upload" id="fileToUpload">，然后在您的PHP脚本中使用$_FILES["img_upload"]。
但是，默认情况下，dropzone会将文件命名为“file”而不是“img_upload”。 您可以使用“paramName：”更改dropzone将使用的内容，请参阅http://www.dropzonejs.com/#configuration。或者只是将表单和php更改为“文件”。