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POHow to check if receive new response on the posts that user responsed before?
 

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  1. POHow to check if receive new response on the posts that user responsed before?
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    <p>Let's say there are 10 posts, and I have sent a response onto 7 of posts. When other user send response to the posts, the system must check and tell me if any 7 of posts receive a new response. The system will not check the other 3 posts, it will check the 7 posts that I have responded only.</p> <p>Step 1 - <code>SELECT post-id FROM responsesLive WHERE username='{$myUsername}';</code> //This will output many duplicated post-id if I sent multiple responses onto a particular post. How to prevent the duplicated post-id?</p> <p>Step 2 - After I get 7 of the post-id, I need to get the response-id of last response in each of the 7 posts. Do I need to use array to store the 7 post-id? Or I just need to write this query within while loop of previous query like :</p> <pre><code>$query3 = "SELECT id FROM responseslive WHERE username='{$myUsername}'"; $result3 = mysql_query($query3,$connection) or die (mysql_error()); confirm_query($result3); while($postinfo = mysql_fetch_array($result3)){ $post-id= $postinfo['post-id']; $query4 = "SELECT rsp-id FROM responseslive WHERE postid='{$post-id}' ORDER BY rsp-id DESC LIMIT 1"; $result4 = mysql_query($query4,$connection) or die (mysql_error()); confirm_query($result3); while($rspinfo = mysql_fetch_array($result4)){ $last-rsp-id= $rspinfo['rsp-id']; } } </code></pre> <p>Step 3 - Then compare current <code>$last-post-id</code> to previous <code>$last-post-id</code>, if current <code>$last-post-id</code> is greater than previous <code>$last-post-id</code>, then tell the user that there is a new response on the post that he have responded before.</p>
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