mysql - Get unique image for every user when call default image from query -

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sorry, long title. have list registered users, profile pic, without. problem if user 1 logged in. in user list, has same profile image user 1.

but if remove default caller query, every user gets own picture, default.jpg image doesn't work. remove query , use if statement on page, want avoid that. 

            function fetch_users($uid){             $query = $this->link->query( "select user.id, user.username, user.email,              userdetails.profile_img,userdetails.firstname,             userdetails.lastname,userdetails.location,following.follow_id             user             left join   userdetails on user.id = userdetails.user_id             left join   following on user.id = following.follow_id                   user.id != '{$uid}' ");             $users = array();             while(($row = $query->fetch(pdo::fetch_assoc)) !== false) {     #the row mess things#----->$row['profile_img'] = file_exists("img/{$uid}.jpg") ? "img/{$uid}.jpg" :  "img/default.jpg" ;             $users[] = $row;         }                return $users;         }

you mixing stuff lot. in query fetch file name table, in comment row use uid construct name. former work default image, use

select …   ifnull(userdetails.profile_img, "img/default.jpg") profile_img, …

this replace null values in table path of default image.

if wanted construct image paths user ids, should use id result row, not 1 of current user:

while(($row = $query->fetch(pdo::fetch_assoc)) !== false) {    $imgpath = "img/" . $row['id'] . ".jpg";   if (!file_exists($imgpath)) $imgpath = "img/default.jpg";   $row['profile_img'] = $imgpath;   $users[] = $row; }

this create image path based on user id, , fall default if no such file exists.

you combine them both:

select …   ifnull(userdetails.profile_img,          concat("img/", user.id, ".jpg") profile_img, … 
while(($row = $query->fetch(pdo::fetch_assoc)) !== false) {    if (!file_exists($row['profile_img']))     $row['profile_img'] = "img/default.jpg";   $users[] = $row; }

this use stored image path set, path constructed uid otherwise. use file named in fashion, default if no such file exist.


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