需要在数据库中插入图像并在 php 和 mysql 中检索它答案

【问题标题】：need to insert image in database and retrieve it in php and mysql需要在数据库中插入图像并在 php 和 mysql 中检索它
【发布时间】：2013-02-08 15:14:53
【问题描述】：

我是开发简单内容管理系统的 php 新手，我有一个字段，如菜单、位置、可见、img_des、内容、信息 ID .. 它几乎所有工作正常，现在我需要向其中插入图像字段。我有一个单独的文件用于表单和新页面的创建现在是以下代码

  if (isset($_POST['submit'])) {                   
  $errors = array();

// 入库前清理数据

$information_id = mysql_prep($_GET['info']);
$menu = trim(mysql_prep($_POST['menu']));  // cut out whitespace for menu

$position = mysql_prep($_POST['position']);
$visible = mysql_prep($_POST['visible']);
$image = mysql_prep($_POST['image']);
$img_des = mysql_prep($_POST['img_des']);
$content = mysql_prep($_POST['content']);

 if(empty($errors)){
 $query = "INSERT INTO pages (
 menu, position, visible, img_des, content, information_id
 ) VALUES (
 '{$menu}', {$position}, {$visible},'{$img_des}', '{$content}',  {$information_id}
    )";
 if ($result = mysql_query($query, $connection))    {
 $message = "The new page was created successfully";
 $new_page_id = mysql_insert_id();  
 redirect_to("content.php?page={$new_page_id}");
 } else {
 $message = "The page failed to create";

 }
 ?>

在 img_des 之前我想插入图像。我必须使用什么类型，我必须使用什么代码来插入和检索图像。

【问题讨论】：

mysql_query 已弃用，请使用 PDO php.net/manual/fr/function.mysql-query.php

标签： php mysql content-management-system phpmyadmin

【解决方案1】：

您不应该将图像存储在数据库中。将图像保存在服务器上并保存指向数据库中文件位置的链接。

有关更多信息，请参阅此问题：What should I use to save a image in database

【讨论】：

我不同意这里。在数据库中保存图像可能会更慢，但有一些好处，比如细粒度的访问控制和数据集中（这对于构建12-factor 兼容的应用程序非常重要）。所以这确实是一个需求问题。
是的，@hugo_leonardo 你说得有道理，但考虑到他正在构建一个简单的 CMS，我认为这对他来说是一个更简单的解决方案。我同意，如果需要对图像进行更多控制，请使用不同的技术。

【解决方案2】：

  try this code.


<?php


        $images_arr = array();
            //This is the directory where images will be saved
        $target_dir = "uploads/";
        $target = $target_dir.$_FILES['photo']['name'];

            //$target = $target . basename( $_FILES['photo']['name']);

            //This gets all the other information from the form
        $name=$_POST['nameMember'];
        $bandMember=$_POST['bandMember'];
        $pic=($_FILES['photo']['name']);
        $about=$_POST['aboutMember'];
        $bands=$_POST['otherBands'];


            // Connects to your Database
        mysql_connect("Localhost", "remote", "remote123") or die(mysql_error()) ;
        mysql_select_db("test") or die(mysql_error()) ;

            //Writes the information to the database
        mysql_query("INSERT INTO dbProfiles (nameMember,bandMember,photo,aboutMember,otherBands)
        VALUES ('$name', '$bandMember', '$pic', '$about', '$bands')") ;

        //Writes the photo to the server
        if(move_uploaded_file($_FILES['photo']['tmp_name'], $target)){

                //Tells you if its all ok
            echo "The file ". $target_dir.$_FILES['photo']['name']. " has been uploaded, and your information has been added to the directory";
            $images_arr[] = $target;
        }
        else {

            //Gives and error if its not
            echo "Sorry, there was a problem uploading your file.";
        }

?>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <link rel="icon" href="http://www.thesoftwareguy.in/favicon.ico" type="image/x-icon" />
                <!--iOS/android/handheld specific -->
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta name="description" content="Upload multiple images create thumbnails and save path to database with php and mysql">
        <meta name="keywords" content="php, mysql, thumbnail,upload image, check mime type">
        <meta name="author" content="Shahrukh Khan">
        <title>Upload multiple images create thumbnails and save path to database with php and mysql </title>
        <link rel="stylesheet" href="style.css" type="text/css" />
        <style>
             .files{height: 30px; margin: 10px 10px 0 0;width: 250px; }
            .add{ font-size: 14px; color: #EB028F; border: none; }
            .rem a{ font-size: 14px; color: #f00; border: none; }
            .submit{width: 110px; height: 30px; background: #6D37B0; color: #fff;text-align: center;}
        </style>
        <script src="jquery-1.9.0.min.js"></script>
        <script>
            $(document).ready(function() {
                $(".add").click(function() {
                $('<div><input class="files" name="user_files[]" type="file" ><span class="rem" ><a href="javascript:void(0);" >Remove</span></div>').appendTo(".contents");

                });
                $('.contents').on('click', '.rem', function() {
                $(this).parent("div").remove();
                });

            });
        </script>
    </head>
    <body>
        <form name="f1" action="index.php" method="post" enctype="multipart/form-data">  
            <input type="hidden" name="image_form_submit" value="1"/>
                <div id="container">
                    <div id="body">
                        <div class="mainTitle" >Upload multiple images create thumbnails and save path to database with php and mysql</div>
                        <div class="height20"></div>
                        <article>
                            <div class="height20"></div>
                            <div style="width: 380px; margin: 0 auto;">
                                <h3 style="text-align: center;">Image will be resized to 100px X 100px </h3>

                                <p>Please Enter the Band Members Name.</p>
                                <p> Band Member or Affiliates Name:</p>
                                <input type="text" name="nameMember"/>
                                <p>
                                     Please Enter the Band Members Position. Example:Drums.
                                </p>
                                 <p>
                                    Band Position:
                                 </p>
                                <input type="text" name="bandMember"/>
                                <p>
                                    Please Upload a Photo of the Member in gif or jpeg format. The file name should be named after the Members name. If the same file name is uploaded twice it will be overwritten! Maxium size of File is 35kb.
                                </p>
                                <p>
                                    Photo:
                                </p>
                                <input type="hidden" name="size" value="350000">
                                <input type="file" name="photo"> 
                            <p>
                                Please Enter any other information about the band member here.
                            </p>
                            <p>
                                 Other Member Information:
                            </p>
                            <textarea rows="10" cols="35" name="aboutMember">
                            </textarea>
                             <p>
                                 Please Enter any other Bands the Member has been in.
                             </p>
                            <p>
                                     Other Bands:
                            </p>
                                <input type="text" name="otherBands" size=30 />
                            <br/>
                            <br/>
                                <input TYPE="submit" name="upload" title="Add data to the Database" value="Add Member"/>




                        </div>
                        <table class="bordered">
                         <?php
          // fetch all records
          $sql = "SELECT * FROM dbProfiles WHERE 1 "; ?>
          <?php
         $sql="SELECT * FROM dbProfiles";
 $result_set=mysql_query($sql);
 while($row=mysql_fetch_array($result_set))
 {
  ?>
        <tr>
       <td><p><?php echo $row['nameMember'] ?>"</p></td>
        <td><img src="uploads/<?php echo $row['photo'] ?>" width="200px" height="200px;"/><p><?php echo $row['nameMember'] ?>"</p></td>
        </tr>
        <?php
 }
 ?>
 </table>

                    </article>
                </div>

            </div>
            <div class="height10"></div>

    </form>

  </body>
</html>
<?php

function errorMessage($str) {
  return '<div style="width:50%; margin:0 auto; border:2px solid #F00;padding:2px; color:#000; margin-top:10px; text-align:center;">' . $str . '</div>';
}

function successMessage($str) {
  return '<div style="width:50%; margin:0 auto; border:2px solid #06C;padding:2px; color:#000; margin-top:10px; text-align:center;">' . $str . '</div>';
}
?>

【讨论】：