我正在尝试使用android应用程序的php web servive从mysql db检索blob（image），但是blob列仍然为空。

Question

I am trying to retrieve blob ( image ) from mysql db using php web servive for android app but the blob column still getting null the insert code works fine but retrieve code return null even if the blob column is not empty how can i fix this ?

      $result = mysql_query("SELECT * FROM core") or die(mysql_error());
        if (mysql_num_rows($result) > 0) {
            // looping through all results
            $response["articles"] = array();

            while ($row = mysql_fetch_array($result)) {
                // temp user array
                $product = array();
                $product["AID"] = $row["ID"];
                $product["ATitle"] = $row["title"];
                $product["ADate"] = $row["date"];   
                $product["AImage"]  = base64_encode($row["data"]);
               // $product["AImage"] =mysql_real_escape_string($b64img);
                $product["AArticle"] = $row["article"];

                // push single product into final response array
                array_push($response["articles"], $product);
            }
            // success
            $response["success"] = 1;


        }
        `

  //  insert part 
        ` 
            $base= $_POST['image'];
            $buffer = base64_decode($base);
            $buffer = mysql_real_escape_string($buffer);
            $sql ="INSERT INTO `core`(`title`,`date`,`article`,`image`)VALUES ('$title','$date','$article','$buffer')";`

Answer 1

easy ...

This is incorrect ...

$product["AImage"] = base64_encode($row["data"]);

This is correct ...

$product["AImage"] = base64_encode($row["image"]);

You were selecting data when it should be image