Question

I have created the function below;

To check if a record exists in the db or not, if record exists should return true, else false and currently returns the fourth column of the row which is the field $row[‘isannounced’].

The value will be true or false. But the problem is if the row is empty, the row count will still be 1. is there a better way to handle this?

Thanks in advance.

function isnotificationannounced($dspid, $clldsq, $clldtm){
//echo 'in : isnotificationannounced<br>';

$res=false;
$qry = "SELECT * FROM tbl_maindisplay_notification where (clldsq='$clldsq' AND clldtm='$clldtm' AND dspid='$dspid')";
//echo $qry;
    $result = querydb($qry);
    if ($result) {
        $row = mysql_fetch_array($result);
        //echo 'row data:<br>';print_r($row);
        if(count($row)>0){
                $res=$row[4];
                //print_r($row);
        }           
    } else {
        die("existsindb: Query failed");
    }
    unset($clldsq, $clldtm, $tdcode);
return $res;
}

Answer 1

With select * , you’re querying the complete table contents.

Try using select count(*) from , and check the return value.