function user_imgalt($mid,$f,$isadd,$isq,$value,$cs){
$title=$_POST['title'];
$htmls=$value;
$pattern = "/<img[^>]+>/";
preg_match_all($pattern, $htmls, $matches);
for ($i=0; $i<=count($matches[0]); $i++) {
preg_match_all("/alt=\".+?\"/",$matches[0][$i],$altimg);
preg_match_all("/title=\".+?\"/",$matches[0][$i],$titleimg);
$t_alt=count($altimg[0]);
if($t_alt==0){
$htmls=str_replace("<img","<img alt=\"{$title}\"",$htmls);
$htmls=str_replace("<img","<img title=\"{$title}\"",$htmls);
}
}
return $htmls;
}