php - Mysql update statement won't execute -


can me this? when i'm trying update table nothing happens , can't figure out what's wrong. i've tried different query's not 1 worked.

my code: http://pastebin.com/8zdpm0ah doesn't work line 23 

<?php  foreach($db->query("select * blog id '$id'") $row){      echo "titel: <input type='text' size='50' name='titel' value='$row[titel]'><br>";     echo "post:<br>";     echo "<textarea name='editblog'>";     echo $row[post];     echo "</textarea>";      echo "<input type='hidden' name='id' value='";     echo $row[id];     echo "'>"; } ?>  <input type="submit" value="edit post" name="postedit"> </form> <script> ckeditor.replace( 'editblog' ); </script> <?php  if(isset($_post['postedit'])){     $titel = $_post['titel'];     $post = $_post['editblog'];     $id = $_post['id'];      $sth = $db->prepare("update blog set titel='$titel',post='$post' id=$id");       $sth->execute();     echo "<h2>post edited!</h2>"; }

if aren't using prepared statements intended (using $db->bind_params()), recommend switching line 29 

$sth = $db->query("update blog set titel='$titel',post='$post' id=$id");

and removing line 30.


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