php - I want a alert box to come up when records are updated -


i have php file need check if variables not empty , update table.everything works fine except alert. 

<?php     $con=mysql_connect("localhost","root","");   mysql_select_db("sg",$con);   error_reporting(0); $result1=mysql_query("select declarationno,declarantreferenceno sg_report declarationno='$dec' or declarantreferenceno='$dec'"); if(isset($_post['mytext'])){ $cn = $_post['mytext']; }  if(isset($_post['mytext1'])){ $dec = $_post['mytext1']; } if(isset($_post['tb3'])){ $rem = $_post['tb3']; }   want alert box come when records updated   if( !empty($dec) && !empty($rem)  ){  $result=mysql_query("update sg_report set creditnotestatus='$cn',remarks='$rem' declarationno='$dec' or declarantreferenceno='$dec'"); echo "<script type='text/javascript'>alert('updated successfully!');</script>"; }

i want alert box come if values not entered

if(empty($dec) || empty($rem) ) {      echo "<script type='text/javascript'>alert(\"please enter values\");window.location=\"view3.php\";</script>";      }       ?>

try one

if(trim($_post['mytext'])!=''&&trim($_post['mytext1'])!=''&&trim($_post['tb3'])!='') {     $result=mysql_query("update sg_report set creditnotestatus='$cn',remarks='$rem' declarationno='$dec' or declarantreferenceno='$dec'");     if($result)     {         echo "<script type='text/javascript'>alert('updated successfully!');</script>";     } } else {     echo "<script type='text/javascript'>alert(\"please enter values\");window.location=\"view3.php\";</script>"; }

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