如何在php中上传多个图像并将其存储为blob mysql

Question

Here is my current code and can anyone help me how i can upload multiple images with a text in category? 这是我当前的代码，任何人都可以帮助我如何上传带有类别文本的多张图片？ i have to store the images as blob in database. 我必须将图像作为Blob存储在数据库中。

<?php
    if(count($_FILES) > 0) {
        if(is_uploaded_file($_FILES['userImage']['tmp_name'])) {
            mysql_connect("localhost", "root", "");
            mysql_select_db ("au");
            $cat = $_POST['cat'];
            $imgData =addslashes(file_get_contents($_FILES['userImage']['tmp_name']));
            $imageProperties = getimageSize($_FILES['userImage']['tmp_name']);
            $sql = "INSERT INTO output_images(imageType ,imageData, category)
            VALUES('{$imageProperties['mime']}', '{$imgData}', '$cat')";
            $current_id = mysql_query($sql) or die("<b>Error:</b> Problem on Image Insert<br/>" . mysql_error());
            if(isset($current_id)) {
                header("Location: listImages.php");
            }
        }
    }
?>
<HTML>
    <HEAD>
        <TITLE>Upload Image to MySQL BLOB</TITLE>
        <link href="imageStyles.css" rel="stylesheet" type="text/css" />
    </HEAD>
    <BODY>
        <form name="frmImage" enctype="multipart/form-data" action="" method="post" class="frmImageUpload">
            <label>Upload Image File:</label><br/>
            <input type="text" name="cat">
            <input name="userImage" type="file" class="inputFile" />
            <input type="submit" value="Submit" class="btnSubmit" />
        </form>
    </div>
    </BODY>
</HTML>

Answer 1

I have two articles in my blog refer to multiple files uploading and storing images in MySQL database. 我的博客中有两篇文章提到了多个文件在MySQL数据库中上传和存储图像。

Multiple files uploading 多个文件上传

upload.html upload.html

<form action="product.php" method="post" enctype="multipart/form-data">
  <input type="file" class="form-control-file" name="prod_pic[]" id="prod_pic[]">
  <input type="file" class="form-control-file" name="prod_pic[]" id="prod_pic[]">
             :
  <button type="submit" class="btn btn-primary">Save Prodcut Info</button>
</form>

Note that the 'name' property of the <input> tag should be added an array tag '[]' . 注意， <input>标记的'name'属性应该添加一个数组标记'[]' 。 In addition, enctype="multipart/form-data" should be added in the tag in order to enable the file uploading function. 另外，应在标签中添加enctype="multipart/form-data" ，以启用文件上传功能。 Thus, the $_FILES variable can be an array to carry multiple files information. 因此， $_FILES变量可以是一个包含多个文件信息的数组。

Then, the product.php converts $_FILE variable and save files to the destination path. 然后，product.php转换$ _FILE变量并将文件保存到目标路径。

product.php product.php

<?php
  if (isset($_FILES['prod_pic'])) {
    $pics = convert_upload_file_array($_FILES['prod_pic']);

    foreach ($pics as $key => $pic) {
      $target = "images/{$pic['name']}";
      move_uploaded_file($pic['tmp_name'], $target);
    }
  }
?>

$_FILES variable as an array is not as a usual form as we think. $_FILES变量作为数组不是我们认为的通常形式。 It is formed by using file's attribute as the key, not the index number. 它是通过使用文件的属性作为键而不是索引号来形成的。 Therefore, we need a converting function convert_upload_file_array() . 因此，我们需要一个转换函数convert_upload_file_array() 。

function convert_upload_file_array($upload_files) {
  $converted = array();

  foreach ($upload_files as $attribute => $val_array) {
    foreach ($val_array as $index => $value) {
      $converted[$index][$attribute] = $value;
    }
  }
  return $converted;
}

Read more: How to Upload Multiple Files in PHP 阅读更多：如何在PHP中上传多个文件

Regarding storing images in MySQL database 关于在MySQL数据库中存储图像

Please refer to the following code: 请参考以下代码：

$prod_pic = $mysqli->real_escape_string(file_get_contents($_FILES['prod_pic']['tmp_name']));
$prod_pic_type = $_FILES['prod_pic']['type'];
 :
 :
$sql = "UPDATE products 
        SET prod_pic      = '{$prod_pic}',
            prod_pic_type = '{$prod_pic_type}'
        WHERE prod_id = {$prod_id}";
$mysqli->query($sql) or die($mysqli->connect_error);
$mysqli->close();

The key part is As you can see, the key part is: 如您所见，关键部分是：

file_get_contents($_FILES['prod_pic']['tmp_name'])

and 和

$mysqli->real_escape_string(......)

Read more: Insert and Update An Image to MySQL Server Field with Blob Data Type in PHP 阅读更多：在PHP中使用Blob数据类型将图像插入和更新到MySQL服务器字段

By using the key ideas above, your goal should be easily achieved. 通过使用上述关键思想，您的目标应该很容易实现。

如何在php中上传多个图像并将其存储为blob mysql

问题描述

1 个解决方案

解决方案1
0 2018-11-22 09:16:32

如何在php中上传多个图像并将其存储为blob mysql

问题描述

1 个解决方案

解决方案1 0 2018-11-22 09:16:32

解决方案1
0 2018-11-22 09:16:32