Saving Files as blob in database ajax php pdo

Question

$fileCount = count($_FILES);
for ($i = 0; $i < $fileCount; $i++) {
    $fp = fopen($_FILES[\"file_\".$i][\'tmp_name\'], \'rb\');
    $stmt4 = $dbh - > prepare(\"IN         


        

Answer 1

You can try

MySQL

CREATE TABLE files (
    id   INT           AUTO_INCREMENT PRIMARY KEY,
    mime VARCHAR (255) NOT NULL,
    data BLOB          NOT NULL
);

PHP

  class BlobDemo {

        const DB_HOST = 'localhost';
        const DB_NAME = 'nameofdb';
        const DB_USER = 'username';
        const DB_PASSWORD = 'password';

        /**
         * PDO instance
         * @var PDO 
         */
        private $pdo = null;

        /**
         * Open the database connection
         */
        public function __construct() {
            // open database connection
            $conStr = sprintf("mysql:host=%s;dbname=%s;charset=utf8", self::DB_HOST, self::DB_NAME);

            try {
                $this->pdo = new PDO($conStr, self::DB_USER, self::DB_PASSWORD);
                //for prior PHP 5.3.6
                //$conn->exec("set names utf8");
            } catch (PDOException $e) {
                echo $e->getMessage();
            }
        }

        /**
         * insert blob into the files table
         * @param string $filePath
         * @param string $mime mimetype
         * @return bool
         */
        public function insertBlob($filePath, $mime) {
            $blob = fopen($filePath, 'rb');

            $sql = "INSERT INTO files(mime,data) VALUES(:mime,:data)";
            $stmt = $this->pdo->prepare($sql);

            $stmt->bindParam(':mime', $mime);
            $stmt->bindParam(':data', $blob, PDO::PARAM_LOB);

            return $stmt->execute();
        }
}

$blobObj = new BlobDemo();

// test insert pdf
$blobObj->insertBlob('pdf/prova.pdf',"application/pdf");

work for me,I try with PDF,JPG and HTML for insert update and view.