db entry based on primary key

Posted on 16th Feb 2014 07:03 pm by admin

My "topics" table contains 10 entires
topicid topic
01 Bye
02 Hi
03 Hello
10 Morning

<?php //topics.php
ttopics[]= //I have 10 strings here which have changed by now.

foreach ($ttopics as $ttkey)

//I am trying to update my "topics" table whenever these strings change, based on the topicid (primary key).

//Please correct my code.

$id = mysql_real_escape_string('topicid');
$topic = mysql_real_escape_string('topic');
$result = mysql_query("SELECT topicid, topic FROM table WHERE topicid='{$id}' and topic='{$topic}' ");
$num = mysql_num_rows( $result );
if ($num == 0)
$querypost = mysql_query ("INSERT INTO trendingtopics (topic) VALUES ('$ttkey')");


I am getting an error. Lets say the position of Morning is first and Bye is last. It should update the database accordingly. If there is a new entry, say "phpfreaks" in first position. It should update according.

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