旋转base 64映像并作为BLOB插入MySql

Question

I am just trying to rotate the image coming from the DB, which is base 64 format. and update back the rotated image into mysql.

My Image

$imageData=mysql_real_escape_string($rs[0]['image_data']);// base 64 format
$degrees = 180;

rotate image function

    ob_start();
    $destImage = imagerotate($imageData, $degrees, 0) ;     
    imageJPEG($destImage);
    $image_thumb =mysql_real_escape_string(ob_get_contents());
    ob_end_clean();

The control is not going inside ob_start(). Please help

Answer 1

You don't want to escape the data you read from the DB, you only escape it when you write it. The raw data isn't an image resource:

$imageData = $rs[0]['image_data'];
$im = imagecreatefromstring($data);

$degrees = 180;

ob_start();
$destImage = imagerotate($im, $degrees, 0) ;     
imageJPEG($destImage);
$image_thumb =mysql_real_escape_string(ob_get_contents());
ob_end_clean();

The other thing you might need to add is decode/encode for base64. Easier to store as a blob that way. otherwise you are escaping a binary string which could be a problem.