Question

我正在通过php表格在注册用户的DB中更新名称，电子邮件。工作正常。

class.usr.php

public function update($uname,$email, $tax)
    {
    try {
    $stmt = $this->conn->prepare('UPDATE tbl_users SET userName = ?, userEmail = ? , tax = ?  WHERE userID = ? ');
    $stmt->execute(array($uname,$email, $tax , $_SESSION['userSession']));
    return $stmt->fetch();
    } catch(PDOException $e) {
        echo '<p class="bg-danger">'.$e->getMessage().'</p>';
    }

形式

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

Name : 
<input type="text" name="txtuname" value="<?php echo $row['userName'] ?>" /><br/>
Email :
<input type="text" name="txtemail" value="<?php echo $row['userEmail'] ?>" /><br>
Image
<input type="file" name="photo" id="fileSelect"><br> 

<input type="submit" name="submit" value="Save" />

</form>

表单保存在db

中的相关代码

<?php

$user_home = new USER();

if(!$user_home->is_logged_in())
{
    header("Location: index.php");
die();
}

if (isset($_POST['submit'])) {
// new data
$uname = $_POST['txtuname'];
$email = $_POST['txtemail'];
$tax = trim($_POST['tax']); // image url path

$uid = (isset($_SESSION['userSession']) ? intval($_SESSION['userSession']) : 0);

if ($uid > 0 && $user_home->update($uname,$email, $tax, $uid))
{
    header("Location: profile1.php");
   die(); 
}
}

$stmt = $user_home->runQuery("SELECT * FROM tbl_users WHERE userID=:uid");
$stmt->execute(array(":uid"=>$_SESSION['userSession']));
$row = $stmt->fetch(PDO::FETCH_ASSOC);

?>

之后，现在我通过下面的代码成功地通过相同的php表单将图像上传到文件夹。

    <?php 
if(isset($_FILES["photo"]["error"])){ 
if($_FILES["photo"]["error"] > 0){ 
echo "Error: " . $_FILES["photo"]["error"] . "<br>"; 

} else{ 
$allowed = array("jpg" => "image/jpg", "jpeg" => "image/jpeg", "gif" => "image/gif", "png" => "image/png"); 
$filename = $_FILES["photo"]["name"]; 
$filetype = $_FILES["photo"]["type"]; 
$filesize = $_FILES["photo"]["size"]; 

// Verify file extension 
$ext = pathinfo($filename, PATHINFO_EXTENSION); 
if(!array_key_exists($ext, $allowed)) die("Error: Please select a valid file format."); 

// Verify file size - 5MB maximum 
$maxsize = 5 * 1024 * 1024; 
if($filesize > $maxsize) die("Error: File size is larger than the allowed limit."); 

// Verify MYME type of the file 
if(in_array($filetype, $allowed)){ 
// Check whether file exists before uploading it 
if(file_exists("upload/" . $_FILES["photo"]["name"])){ 
echo $_FILES["photo"]["name"] . " is already exists."; 

} else{ 
move_uploaded_file($_FILES["photo"]["tmp_name"], "upload/" . $_FILES["photo"]["name"]); 

echo "Your file was uploaded successfully."; 
} 
} else{ 

echo "Error: There was a problem uploading your file - please try again."; 
} 

} 

} else{ 
echo ""; 
} 

?>

现在图像只是保存在文件夹中，我需要的是我希望该图像路径保存在数据库中并将该图像路径分配给数据库中的上传用户。以便一个注册用户可以更新现有图片，但不再上传一张图片。

我尝试了下面的代码，但没有工作：

<?php
$folder = "upload/"; 
    $file = basename( $_FILES['image']['name']); 
    $full_path = $folder.$file; 
    $tax= $full_path;

    if(in_array($filetype, $allowed)){ 
// Check whether file exists before uploading it 
if(file_exists("upload/" . $_FILES["photo"]["name"])){ 
echo $_FILES["photo"]["name"] . " is already exists."; 

} else{ 
move_uploaded_file($_FILES["photo"]["tmp_name"], "upload/" . $_FILES["photo"]["name"]); 

echo "Your file was uploaded successfully."; 
} 
} else{ 

echo "Error: There was a problem uploading your file - please try again."; 
} 

} 

} else{ 
echo ""; 
} 
?>

db列：userName，userEmail，tax，photo

在google的帮助下我完成了以上所有操作，我是php新手，所以请帮助我。

Answer 1

这是另一种解决方案：

首先手动执行此查询以添加新列：

ALTER TABLE `tbl_users` ADD `photo` VARCHAR(255) NOT NULL ;

然后这是php代码：

<?php
$dbConn = new Database();
$dbConn->dbConnection();

$user_home = new USER();

function uploadUserPhoto($uid) {
    global $dbConn;
    if(isset($_FILES["photo"]["error"])) {
        if($_FILES["photo"]["error"] > 0) {
            echo "Error: " . $_FILES["photo"]["error"] . "<br>";

        } else {
            $allowed = array("jpg" => "image/jpg", "jpeg" => "image/jpeg", "gif" => "image/gif", "png" => "image/png");
            $filename = $_FILES["photo"]["name"];
            $filetype = $_FILES["photo"]["type"];
            $filesize = $_FILES["photo"]["size"];

            $userDir = $uid;

            // Verify file extension
            $ext = pathinfo($filename, PATHINFO_EXTENSION);
            if(!array_key_exists($ext, $allowed)) die("Error: Please select a valid file format.");

            // Verify file size - 5MB maximum
            $maxsize = 5 * 1024 * 1024;
            if($filesize > $maxsize) die("Error: File size is larger than the allowed limit.");

            // Verify MYME type of the file
            if(in_array($filetype, $allowed)) {
                if(!is_dir('upload/'.$uid)) {
                    mkdir('upload/'.$uid);
                }

                $photoname = time().$uid.'_photo'.'.'.$ext;

                // delete all the files in this directory
                $files = glob('upload/'.$uid.'/*'); // get all file names
                foreach($files as $file){ // iterate files
                    if(is_file($file))
                        unlink($file); // delete file
                }

                // Upload the photo
                move_uploaded_file($_FILES["photo"]["tmp_name"], "upload/" . $uid . '/'. $photoname);

                $updateData = array(':userID' => $uid, ':photo' => $photoname);
                $stmt = $dbConn->conn->prepare("UPDATE tbl_users SET photo=:photo WHERE userID=:uid");
                $stmt->execute($updateData);

                echo "Your file was uploaded successfully.";
            } else {
                echo "Error: There was a problem uploading your file - please try again.";
            }
        }
    } else {
        echo "";
    }
}

if(!$user_home->is_logged_in())
{
    header("Location: index.php");
    die();
}

if (isset($_POST['submit'])) {
    // new data
    $uname = $_POST['txtuname'];
    $email = $_POST['txtemail'];
    $tax = trim($_POST['tax']); // image url path

    $uid = (isset($_SESSION['userSession']) ? intval($_SESSION['userSession']) : 0);

    if ($uid > 0 && $user_home->update($uname,$email, $tax, $uid))
    {
        uploadUserPhoto($uid);
        header("Location: profile1.php");
        die();
    }
}

$stmt = $user_home->runQuery("SELECT * FROM tbl_users WHERE userID=:uid");
$stmt->execute(array(":uid"=>$_SESSION['userSession']));
$row = $stmt->fetch(PDO::FETCH_ASSOC);
?>

有$dbConnection变量是与数据库的连接，但由于我不知道你的其余代码，你应该用适当的数据库连接变量替换它。

用户的照片保存在photo的{{1}}列中，并且每个用户都在tbl_users目录中创建了子目录。 subdir是userID。例如，对于uploads用户，其上传路径为userID = 1。

文件名是动态生成的 - 这样就可以避免缓存上传的照片，例如同名...这是更好的方法。

您必须更改显示照片的代码，因为现在它的文件名在数据库中，并且上传中有子目录（用户的用户ID）

Answer 2

添加新功能以保存文件并使用全局php var $_FILES

<强> 1 将新列添加到数据库以存储文件路径，我们将其命名为photo

<强> 2 为您的用户类添加新功能：

<?php
class User {
...
  const PATH_PHOTOS = '/path/to/photo/folder/';
  const BASE_URL = 'http://YOUR_DOMAIN_NAME:YOUR_PORT/YOUR_PATH/';

  public function add_photo($file)
  {
    $ext = pathinfo($file['name'], PATHINFO_EXTENSION);
    $file['new_name'] = uniqid(rand(), true) . ".$ext";
    if (!$this->_upload_file($file))
      return false;
    return $this->_remove_previous_photo()->_add_file_to_db(self::PATH_PHOTOS .     basename($file['new_name']));
  }

  protected function _remove_previous_photo()
  {
    $photo = $this->get_photo();
    if ($photo)
      unlink($photo);
    return $this;
  }

  public function get_photo()
  {
    global $_SESSION;
    $stmt = $this->conn->prepare('SELECT photo FROM tbl_users WHERE userID = ?     ');
    $stmt->execute(array($_SESSION['userSession']));
    $result = $stmt->fetch();
    return reset($result);
  }

  public function get_photo_url()
  {
    $pathInfo = pathinfo($this->get_photo());
    $last_dir = end(explode(DIRECTORY_SEPARATOR, $pathInfo['dirname']));
    return self::BASE_URL . "$last_dir/" . basename($this->get_photo());
  }

  protected function _upload_file($file)
  {
    $uploadfile = self::PATH_PHOTOS . $file['new_name'];
    return move_uploaded_file($file['tmp_name'], $uploadfile);
  }

  protected function _add_file_to_db($file_path)
  {
    try {
      $stmt = $this->conn->prepare('UPDATE tbl_users SET photo = ? WHERE userID = ? ');
      return $stmt->execute(array($file_path, $_SESSION['userSession']));
    } catch (PDOException $e) {
      echo '<p class="bg-danger">' . $e->getMessage() . '</p>';
    }
  }
...
}
?>

第3 主文件应如下所示：

<?php $user_home = new USER(); if(!$user_home->is_logged_in()) { header("Location: index.php"); die(); } if (isset($_POST['submit'])) { // new data $uname = $_POST['txtuname']; $email = $_POST['txtemail']; $tax = trim($_POST['tax']); // image url path $uid = (isset($_SESSION['userSession']) ? intval($_SESSION['userSession']) : 0); if ($uid > 0 && $user_home->update($uname,$email, $tax, $uid) && $user_home->add_photo($_FILES['photo'])) { header("Location: profile1.php"); die(); } } $stmt = $user_home->runQuery("SELECT * FROM tbl_users WHERE userID=:uid"); $stmt->execute(array(":uid"=>$_SESSION['userSession'])); $row = $stmt->fetch(PDO::FETCH_ASSOC); ?>

希望这有帮助

在DB列中保存图像URL路径

2 个答案: