<?php
$query = "SELECT * FROM table WHERE id = 2";
$result = mysqli_query($con, $query);
$result_set = mysqli_fetch_array($result);
echo $result_set['img'];
?>
Why do shows strange characters, not image?
You need to add Content-Type header at the beginning, something like
<?
header('Content-Type: image/png');
?>
for the PNG image
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