function yazi_degis($yazi){
    $degis = array(
        '<img src="#" />' => '<a href="#"><img src="#" /></a>',
        '<img src="#2" />' => '<a href="#"><img src="#2" /></a>',
    );
    $yazi = str_replace(array_keys($degis), $degis, $yazi);
    return $yazi;
}
 
add_filter('the_content', 'yazi_degis ');