DIsplay image(bytea) from postgresql with php
$conn = pg_pconnect("dbname=test user=postgres password=postgres");

$temp = '/home/postgres/tmp.jpg';

$query = "select lo_export(image, '$temp') from map ";
$result = pg_query($query);

if($result)
{
    while ($line = pg_fetch_array($result))
    {
        $ctobj = $line["image"];
        echo "<IMG SRC=show.php> </br>";

    }

}
else { echo "File does not exists."; }
pg_close($conn);

header("Content-type: image/jpeg");
$jpeg = fopen("/home/postgres/tmp.jpg","r");
$image = fread($jpeg,filesize("/home/postgres/tmp.jpg"));
echo $image;