图像未保存在文件夹中

Question

您好，我有一个 crud 操作，我有此代码来为产品上传图像，但图像未保存在 mysql 或文件夹主机中。

?php
 include("includes/db.php");
 $msg = "";
 if (isset($_POST['submit'])) {
 $target = "images/".basename($_FILES['poza']['name']);
 $image = $_FILES['poza']['name'];
 $nume = $_POST['nume'];
 $editor = $_POST['editor'];
 $pozitie = $_POST['pozitie'];
 $pret = $_POST['pret'];
 $cat = $_POST['cat'];
 $sql = "INSERT INTO produse (poza, titlu, descriere,pozitie,pret,categorie) 
 VALUES ('$image','$nume','$editor', '$pozitie','$pret','$cat')";
 mysqli_query($conn,$sql);

  // mut poza in folder

 if (move_uploaded_file($_FILES['poza']['tmp_name'], $target)) {
  $msg = "<div class='alert alert-success alert-dismissible' role='alert'>
                <button type='button' class='close' data- 
     dismiss='alert'>×</button>
                <div class='alert-icon'>
                 <i class='icon-check'></i>
                </div>
                <div class='alert-message'>
                  <span><strong>Success!</strong> Produsul a fost adaugat! 
          </span>
                </div>
              </div>";
      }else{
         $msg = "<div class='alert alert-danger alert-dismissible' 
           role='alert'>
               <button type='button' class='close' data- 
                    dismiss='alert'>×</button>
                <div class='alert-icon'>
                 <i class='icon-close'></i>
                </div>
                <div class='alert-message'>
                  <span><strong>Eroare!</strong> Produsul nu a fost salvat! 
                  </span>
                </div>
              </div>";
        }
            header('location: index.php');
       }


       ?>

target 是我的文件夹路径，但在我的文件夹中，images 是空的，就像 mysql 数据库一样是 emtpy。

HTML 是在模态 boostrap 上，代码如下：

<div id="myModal" class="modal fade" role="dialog">
  <div class="modal-dialog">


  <div class="modal-content">
    <div class="modal-header">
       <button type="button" class="close" data-dismiss="modal">&times; 
        </button>
        <h4 class="modal-title">titlu</h4>
        </div>
       <div class="modal-body">
          <form class="" action="add.php" method="post">
            <div class="form-group">
             <label for="">descriere</label>
               <textarea name="editor" class="ckeditor" id="continut" 
                rows="8" cols="80" value=""><?php echo $row['continut'];?> 
               </textarea>
         <label for="">poza</label>
          <input type="file" name="poza" value="">
          <label for="">Titlu</label>
                  <input type="text" name="nume" value="">
                  <label for="">Pozitie</label>
                  <input type="text" name="pozitie" value="">
                  <label for="">pret</label>
                  <input type="text" name="pret" value="">
                  <label for="">pret</label>
                  <select name="cat" id="cat">
                 <option value="">Selecteaza categoria</option>
                 <option value="1">ACE DE CUSUT</option>
                 <option value="2">ATA & PAMBLICA</option>
                 <option value="3">FERMOAR</option>
                 <option value="4">NASTURI</option>
                 <option value="5">ALTE ACCESORII</option>
         </select>
                <button type="submit" name="submit">Salveaza</button>
      </div>
    </form>
  </div>
  <div class="modal-footer">
    <button type="button" class="btn btn-default" data- 
     dismiss="modal">Close</button>
  </div>
</div>

我不知道t know how to check the array $_FILES i will try but i cant 明白我对路径做了一些更改，但我还是一样。

Answer 1

您需要正确格式化表单，主要是<form> 标签：

<!-- needs "multipart/form-data" -->
<form action="add.php" method="post" enctype="multipart/form-data">

---

以下是对其他实现的建议；如果你不在乎，请忽略

除此之外的其他问题，您需要确保使用正确的权限创建文件保存到的文件夹，您需要参数化您的 mysql 查询，并且您需要确保您的上传在您的 php ini 中有足够的内存：

我建议你使用 mysqli 的 OOP 版本或使用 PDO 代替。绑定更加直接。

我还建议使用根文件夹配置文件来实现常量和一致性：

/config.php

<?php
define('DS', DIRECTORY_SEPARATOR);
# Sometimes defines are helpful
define('ROOT_DIR', __DIR__);
# Set your image folder
define('IMAGE_DIR', ROOT_DIR.DS.'images');
# Set an include folder
define('INCLUDES', ROOT_DIR.DS.'includes');
# Set an functions folder
define('FUNCTIONS', INCLUDES.DS.'functions');
# Start session
session_start();
# Add the database
require(INCLUDES.DS."db.php");

/includes/db.php

<?php
# Create an OOP connection instead of a functional connection
$conn = new mysqli('localhost', 'my_user', 'my_password', 'my_db');

创建一个观察者来包含你的动作监听器

/includes/functions/imageObserver.php

<?php
# Inject the DB and make sure the system messages are passed
function imageObserver($conn, &$msg)
{
    # Stop if no action
    if(!isset($_POST['action']))
        return false;
    # Stop if action not set
    if($_POST['action'] != 'upload_image')
        return false;
    # Make sure the image folder is created
    if(!is_dir(IMAGE_DIR))
        mkdir(IMAGE_DIR, 0755, true);
    # You may want to do a file check here incase someone uploads something
    # they shouldn't

    # Set image name
    $image   = $_FILES['poza']['name'];
    # Set the path
    $target  = IMAGE_DIR.DS.$image;
    # Move the file
    if(move_uploaded_file($_FILES['poza']['tmp_name'], $target)) {
        extract($_POST);
        # Create the string, use "?" in place of values
        $query = $conn->prepare("INSERT INTO produse (`poza`, `titlu`, `descriere`, `pozitie`, `pret`, `categorie`) VALUES (?, ?, ?, ?, ?, ?)");
        # Bind the values to the statement question marks
        $query->bind_param('ssssss', $image, $nume, $editor, $pozitie, $pret, $cat);
        # Execute the query
        $query->execute();
        # You should also do an error check here

        $msg['success'] = true;
    }
    else
        $msg['error'] = true;
}

/whatever-this-page-is.php

<?php
# add the config
require(__DIR__.DIRECTORY_SEPARATOR."config.php");
# add the observer function
require(FUNCTIONS.DS."imageObserver.php");
# Set the messages array
$msg = [];
# Add our listener
imageObserver($conn, &$msg);
# Check if something actually took place, redirect if not
if(empty($msg)) {
    header('index.php');
    # You have to exit on this header
    exit;
}
?>

<div class='alert alert-success alert-dismissible' role='alert'>
    <button type='button' class='close' data-dismiss='alert'>×</button>
    <div class='alert-icon'>
        <i class='icon-check'></i>
    </div>
    <div class='alert-message'>
        <span><strong><?php echo (!empty($msg['success']))? 'Success' : 'Eroare' ?>!</strong> Produsul a fost <?php echo (!empty($msg['success']))? 'adaugat' : 'salvat' ?>!</span>
    </div>
</div>

然后你的表单需要有一个enctype 作为multipart/form-data 并且你应该输入一个动作名称，因为你可能会使用键名submit 进行其他表单提交：

<form class="" action="add.php" method="post" enctype="multipart/form-data">
    <!-- make the action name here -->
    <input type="hidden" name="action" value="upload_image" />
    <input type="file" name="poza" />
    <input type="submit" name="submit" value="Upload Now!" />
</form>

最后，您应该在php.ini 文件中看到您的实例使用了多少内存，这可能还不够（这只是示例设置，您可能没问题）：

upload_max_filesize = 50M
post_max_size = 50M 
max_execution_time = 3000
max_input_time = 3000
memory_limit = 64M