php - Store path to uploaded Image in database -


i'm trying add path of uploaded image database in order use display thumbnail post. found tutorial , used code upload image. gets else statement , exit("error while uploading image on server"); have form collect data:

<form action='' method='post' enctype="multipart/form-data">  <p><label>title</label><br /> <input id="title-input" type='text' name='posttitle' value='<?php if(isset($error)){ echo $_post['posttitle'];}?>'></p>  <p><label>description</label><br /> <textarea id="textarea" name='postdesc' cols='20' rows='5'><?php if(isset($error)){ echo $_post['postdesc'];}?></textarea></p>  <p><label>content</label><br /> <textarea name='postcont' cols='20' rows='5'><?php if(isset($error)){ echo $_post['postcont'];}?></textarea></p>  <p><label>image</label><input type="file" name="uploadedimage">                             </p>  <input type='submit' name='submit' value='submit'> <input type='reset' name='submit' value='reset'>  </form> <?php include 'add-post-handler.php' ?>

and here code used upload image:

function getimageextension($imagetype)     {        if(empty($imagetype)) return false;        switch($imagetype)        {            case 'image/bmp': return '.bmp';            case 'image/gif': return '.gif';            case 'image/jpeg': return '.jpg';            case 'image/png': return '.png';            default: return false;        }       }  if (!empty($_files["uploadedimage"]["name"])) {     $file_name=$_files["uploadedimage"]["name"];     $temp_name=$_files["uploadedimage"]["tmp_name"];     $imgtype=$_files["uploadedimage"]["type"];     $ext= getimageextension($imgtype);     $imagename=$_files["uploadedimage"]["name"];     $target_path = "../img/".$imagename;  if(move_uploaded_file($temp_name, $target_path)) {     $query_upload="insert blog_images (imgpath) values ('$target_path')";     mysqli_query($link, $query_upload) or die("error in $query_upload == ----> ".mysql_error());  }else{    exit("error while uploading image on server");  } }

ps: have doubts on how can imageid related postid considering both submitted same form.(i made relation between 2 tables it's on primary keys i'm not sure if it's correct)

thanks help!

looking @ code:

move_uploaded_file returns false on 2 premises (stated in php docs):

if filename not valid upload file, no action occur, , move_uploaded_file() return false.

if filename valid upload file, cannot moved reason, no action occur, , move_uploaded_file() return false. additionally, warning issued.

my best guess is, information provided:

  • your path not writeable application/webserver, won't moved

make sure application (the webserver) can write in path: '../img/' issuing chmod give directory correct rights webserver user.

security advice (not related question):

  1. your application has in state potential sqli in $target_path. should think using prepared statements

  2. your form writes post data directly output. leads xss. should encode special characters in output.

  3. make sure, images can uploaded , scripts can't executed in '../img' path. exploit upload upload script , execute it.

easiest way prevent sqli in case hashing imagename , setting extension $ext variable:

[...] $ext=getimageextension($imgtype); if($ext === false) {     exit("couldn't determine filetype correctly. please upload pictures only."); } $imagename=md5($_files["uploadedimage"]["name"].time()).$ext; $target_path = "../img/".$imagename; [...]

the time() included, can upload pictures same name.


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