PHP實(shí)現(xiàn)上傳圖片到數(shù)據(jù)庫(kù)并顯示輸出的方法

CREATE TABLE ccs_image (
 id int(4) unsigned NOT NULL auto_increment,
 description varchar(250) default NULL,
 bin_data longblob,
 filename varchar(50) default NULL,
 filesize varchar(50) default NULL,
 filetype varchar(50) default NULL,
 PRIMARY KEY (id)
)engine=myisam DEFAULT charset=utf8

!doctype html>
html lang="en">
head>
  meta charset="UTF-8">
  meta name="viewport"
     content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  meta http-equiv="X-UA-Compatible" content="ie=edge">
  style type="text/css">
    *{margin: 1%}
  /style>
  title>Document/title>
/head>
body>
form method="post" action="upimage.php" enctype="multipart/form-data">
  描述:
  input type="text" name="form_description" size="40">
  input type="hidden" name="MAX_FILE_SIZE" value="1000000"> br>
  上傳文件到數(shù)據(jù)庫(kù):
  input type="file" name="form_data" size="40">br>
  input type="submit" name="submit" value="submit">
/form>
/body>
/html>

?php
if (isset($_POST['submit'])) {
  $form_description = $_POST['form_description'];
  $form_data_name = $_FILES['form_data']['name'];
  $form_data_size = $_FILES['form_data']['size'];
  $form_data_type = $_FILES['form_data']['type'];
  $form_data = $_FILES['form_data']['tmp_name'];
  $dsn = 'mysql:dbname=test;host=localhost';
  $pdo = new PDO($dsn, 'root', 'root');
  $data = addslashes(fread(fopen($form_data, "r"), filesize($form_data)));
  //echo "mysqlPicture=".$data;
  $result = $pdo->query("INSERT INTO ccs_image (description,bin_data,filename,filesize,filetype)
         VALUES ('$form_description','$data','$form_data_name','$form_data_size','$form_data_type')");
  if ($result) {
    echo "圖片已存儲(chǔ)到數(shù)據(jù)庫(kù)";
  } else {
    echo "請(qǐng)求失敗,請(qǐng)重試";

?php
  $id =2;// $_GET['id']; 為簡(jiǎn)潔,直接將id寫上了,正常應(yīng)該是通過(guò)用戶填入的id獲取的
  $dsn='mysql:dbname=test;host=localhost';
  $pdo=new PDO($dsn,'root','root');
  $query = "select bin_data,filetype from ccs_image where id=2";
  $result = $pdo->query($query);
  $result=$result->fetchAll(2);
//  var_dump($result);
  $data = $result[0]['bin_data'];
  $type = $result[0]['filetype'];
  Header( "Content-type: $type");
  echo $data;