PHP图片上传 - 错误

I keep getting the following error with this PHP Image Upload code "File is an image - image/jpeg.Sorry, there was an error uploading your file."

Here is my HTML Form

<form action="upload.php" method="post" enctype="multipart/form-data">
Select image to upload:
<input type="file" name="file" id="file">
<input type="submit" value="Upload Image" name="submit">
</form>

Here is my php code

  <?php  
  $sql="INSERT INTO pictures (file, name) 
  VALUES
  '$_POST[file]', '$_POST[name]' ";


  $target_dir = "uploads/";
  $target_file = $target_dir . basename($_FILES["file"]["name"]);
  $uploadOk = 1;
   $imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
  // Check if image file is a actual image or fake image
  if(isset($_POST["submit"])) {
   $check = getimagesize($_FILES["file"]["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["file"]["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["file"]["tmp_name"], $target_file)) {
    echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been 
   uploaded.";
     } else {
      echo "Sorry, there was an error uploading your file.";
         }
             }
         ?> 

I thought this was due to image size but no matter what size image small or large I keep getting the same error message "File is an image - image/jpeg.Sorry, there was an error uploading your file."

My database is set to the following
id - int(11)
file - mediumblob
name - varchar(255)

Any assistance would be much appreciated.

<?php

//in your code here is syntax error $_POST[file]

$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["file"]["name"]);
$uploadOk = 1;
 $imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
 $check = getimagesize($_FILES["file"]["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["file"]["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["file"]["tmp_name"], $target_file)) {
  echo "The file ". basename( $_FILES["file"]["name"]). " has been
 uploaded.";//here also syntax error 
   } else {
    echo "Sorry, there was an error uploading your file.";
       }
           }
       ?>

Seems like your code failing at this line,

if (move_uploaded_file($_FILES["file"]["tmp_name"], $target_file))

Either you have problem writing to designated folder because permission or the folder is not exist or there are error on upload process.

Have you tried turn on error_reporting and check specific php error code displayed?

This message "File is an image - image/jpeg.Sorry, there was an error uploading your file." you assume error message is actually a line on your code.

reference: http://php.net/manual/en/function.move-uploaded-file.php