Displaying an image blob

I am having difficulty displaying the image I have put in my database.
I am confident the image is there. Through phpmyadmin I can see the Image field is occupied. When I retrieve the image I can see a stream of character which have PNG near the start.

I am using the following code to display the image in a test situation. (I have hard wired the row containing the information).
Could any one let me know what I’m doing wrong. (I’m writing this as a volunteer supporting an orphanage in India).

function test_image()
{
global $wpdb;

$student_id = 77;

$command = “Select Students.Image FROM Students WHERE Students.Student_id = “.$student_id;
$rows = mysql_query($command);
$rows = $wpdb->get_results($command, OBJECT);
echo “rows = “.$rows.”
“;

foreach ($rows as $row):
echo ‘<img src=”data:image/jpeg;base64,’.base64_encode( $row[‘image’] ).'”/>’;
endforeach;
}

The output I get is

Test Image

rows = Array

and then it blows up!

When I var_dump $rows the image is present. I see it as a stream of characters and it has PNG near the start. I have tested it with both PNG and JPEG images the same result. I have also tried the code below but get the same result. Assistance would be greatly appreciated.

Thanks

——————————————————————–

function test_image()
{
global $wpdb;

$student_id = 77;

$command = “Select Students.Image FROM Students WHERE Students.Student_id = “.$student_id;
$rows = mysql_query($command);
$rows = $wpdb->get_results($command, OBJECT);

foreach ($rows as $row):
echo ‘<img src=”data:image/jpeg;base64,’.base64_encode( $row[‘image’] ).'”/>’;
/*
$data = base64_decode($row[‘Image’]);
$im = imagecreatefromstring($data);
if ($im !== false)
{
echo “Not False”;
header(‘Content-Type: image/png’);
imagepng($im);
imagedestroy($im);
}
else echo “Is False”;
endforeach;
}