php – move_uploaded_file返回false,但$_FILES [‘uploadedfile

move_uploaded_file返回false,但是$_FILES [‘uploadedfile’] [‘error’] == 0这对我来说没有.

我已经发布了整个uploader.php和来自upload_photo.php的片段,其中显示了表单标签.

<?php
//This is uploader.php
session_start();
include ('dbconfig.php');
include('SimpleImage.php');

mysql_connect(HOST,USERNAME,PASSWORD);
$conn = mysql_select_db(DB_NAME);

$target_path = "uploads/";

$target_path = $target_path . renameImage();

$_SESSION['client_photo'] = $target_path;

$query = "UPDATE client ";
$query .= "SET personal_photo = ('$target_path') ";
$query .= "WHERE client_id = ".$_SESSION['clientID'];
$results = mysql_query($query) or die('Error msg: '.mysql_error().'<br/>
        sql: '.query.'<br/>');

if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'],$target_path)) {
  $msg = "The file ".  $_SESSION['client_photo']. 
  " has been uploaded";
  chmod($target_path,"0666");
  $work = new ImgResizer($target_path); 
  $work -> resize(600,$target_path); 
} else{
  $msg = "There was an error uploading the file,please try again!";
  $msg .= $_FILES['uploadedfile']['error'];
}
header("Location: upload_photo.php?msg=$msg");

function renameImage(){ 
  mysql_connect(HOST,PASSWORD);
  $conn = mysql_select_db(DB_NAME);

  $sql = "SELECT first_name,last_name,client_id
          FROM client
          WHERE client_id = ".$_SESSION['clientID'];
  $res = mysql_query($sql) or die('Error msg: '.mysql_error().'<br/>
                sql: '.$sql.'<br/>');
  if($row = mysql_fetch_array($res,MYSQLI_ASSOC)){
      $_SESSION['successphoto'] = 1;
      return $row{first_name}.'_'.$row{last_name}.'_'.$row{client_id};
  }
  else{
      echo "There was an error while fetching the row.<br/>";
  }
}

class ImgResizer {
  private $originalFile = '';
  public function __construct($originalFile = '') {
      $this -> originalFile = $originalFile;
  }
  public function resize($newWidth,$targetFile) {
      if (empty($newWidth) || empty($targetFile)) {
          return false;
      }
      $src = imagecreatefromjpeg($this -> originalFile);
      list($width,$height) = getimagesize($this -> originalFile);
      $newHeight = ($height / $width) * $newWidth;
      $tmp = imagecreatetruecolor($newWidth,$newHeight);
      imagecopyresampled($tmp,$src,$newWidth,$newHeight,$width,$height);
      if (file_exists($targetFile)) {
          unlink($targetFile);
      }
      imagejpeg($tmp,$targetFile,85); // 85 is my choice,make it between 0 – 100 for output image quality with 100 being the most luxurious
  }
}

?>

以下是upload_photo.php的片段

echo '<form enctype="multipart/form-data" action="uploader.php" method="POST">';
echo '<tr>';
//echo "<td colspan='2'>".$_GET['text']."</td>";
echo '</tr>';
echo '<tr align="center">';
echo '<td colspan="2">';
echo '<input type="hidden" name="MAX_FILE_SIZE" value="5000000" />
        Choose a file to upload: <input name="uploadedfile" type="file" accept="image/*"/><br />
        <input type="submit" value="Upload File" />
      </form>';