php上传图片存入数据库示例分享_PHP教程

CREATE TABLE `upload` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `type` varchar(20) NOT NULL,
  `data` mediumblob NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

   

   

   
   

if ($_FILES["file"]["error"] > 0)
{
    echo "Error: " . $_FILES["file"]["error"] . "
";
}
else
{
    $type = $_FILES["file"]["type"];
    $size = $_FILES['file']['size'];
    $tmp=$_FILES["file"]["tmp_name"];
    $fp = fopen($tmp,'rb');
    $data = bin2hex(fread($fp,$size));
    $dsn='mysql:host=localhost;dbname=test';
    echo '

';
    try{
        $pdo = new PDO($dsn,'root','root');
        $pdo->exec("INSERT INTO `upload`(`type`,`data`) values ('$type',0x$data)");
        $id = $pdo->lastInsertId();
        echo 'upload success!View';
        $pdo = null;
    }catch (PDOException $e){
        echo $e->getMessage();
    }
    echo '

';
    fclose($fp);
}

$id = $_GET['id'];
if(is_numeric($id)){
    $dsn='mysql:host=localhost;dbname=test';
    try{
        $pdo = new PDO($dsn,'root','root');
        $rs = $pdo->query('select * from `upload`  where `id`='.$id);
        $row = $rs->fetchAll();
        $data = $row[0];
        header("Content-Type:${data['type']}");
        echo $data['data'];
        $pdo = null;
    }catch (PDOException $e){
        echo $e->getMessage();
    }
}else{
    exit();
}