php - My webpage wont work while I write this statement -

 <div style="margin-left:-7px ! important;">  <?php      $sql4 = "select * abc order id desc limit 1";      $query4 = $conn->query($sql4);      $row4 = $query4->fetch(pdo::fetch_assoc);      $link4 = $row4['link_url'];      $images4 = $row4['imagepath'];      $immg4 = basename($images4);      $imagee4 = "adverts"."/".$immg4;      $rowc = $query4->rowcount(pdo::fetch_assoc);      if ($rowc>=1){         echo "         <a href='$link4'; target='_blank'><img src='$imagee4';></a>";      }      else {         echo "";      } ?> 

i want run below script in else condition mention above in echo part, don't understand how put this.

<script type="text/javascript">    ( function() {       if (window.chitika === undefined) { window.chitika = { 'units' : [] }; };      var unit =  {          "calltype"  : "async[2]",          "publisher" : "seeknfameads",          "width"     : 300,           "height"    :250,           "sid"       :"chitika default",          "color_site_link" : "337ab7",          "color_text" : "337ab7"      };      var placement_id = window.chitika.units.length;      window.chitika.units.push(unit);      document.write('<div id="chitikaadblock-' + placement_id + '"></div>');  }()); </script> <script type="text/javascript" src="//cdn.chitika.net/getads.js" async>             </script> </div> 

just use method :
`

else { ?>   <script>    (function() {      if (window.chitika === undefined) {window.chitika = {'units': []}};      var unit = {"calltype":"async[2]","publisher":"seeknfameads","width":300,"height":250,"sid"     :"chitika default","color_site_link":"337ab7","color_text":"337ab7"};      var placement_id = window.chitika.units.length;      window.chitika.units.push(unit);      document.write('<div id="chitikaadblock-' + placement_id + '"></div>');      }());      </script>      <script src="//cdn.chitika.net/getads.js" async></script>  <?php } ?>  

`