php - Mysql Field Data not displaying when a link is clicked? -

i'm trying data database if link clicked.

i used example codes suggested example -getting mysql field data when link clicked?

but doesn't work when click on link nothing comes up.

main.php

<?php include('conn.php'); $sql2    = "select title addpromo"; $result2 = mysql_query($sql2);  echo "<div id=\"links\">\n"; echo "<ul>\n"; while ($row2 = mysql_fetch_assoc($result2)) {     echo "<li> <a href=\"fullproject.php?title=\""         . urlencode($row2['title']) . "\">"         . htmlentities($row2['title']) . "</a>\n</li>"; } echo "</ul>"; echo "</div>"; ?> 

this displaying correct.but when click @ link nothing showing in fullproject.php, blank page.

fullproject.php

<?php // connect server. include('conn.php'); $projectname = isset($_get['title']); $sql1 = "select title addpromo title = '$projectname'"; $result1 = mysql_query($sql1);  while ($row1 = mysql_fetch_assoc($result1)) {     echo "project name: " . $row1['title'] . "<br />";     echo "<br /> "; } ?> 

can me fix this, or other way make this(to data database if link clicked) possible?

change this

main.php

<?php include('conn.php'); $sql2="select title addpromo"; $result2=mysql_query($sql2);      echo '<div id="links">'; echo '<ul>'; while($row2 = mysql_fetch_assoc($result2)){ echo '<li><a href="fullproject.php?title='.urlencode($row2['title']).'">'.htmlentities($row2['title']).'</a></li>';  } echo '</ul>'; echo '</div>'; ?> 

fullproject.php

<?php  if(isset($_get['title'])){      include('conn.php');      $projectname= $_get['title'];      $sql1="select title addpromo title = '$projectname'";     $result1=mysql_query($sql1);          while($row1 = mysql_fetch_assoc($result1)) {       echo "project name: " . $row1['title']. "<br />";           echo "<br /> ";     }  }  ?>