No Data

[Dysan]

I have the following code, that outputs Firstnames and Lastnames from a table inside a database.

How do I display a message if the database/table contains no Firstnames and Lastnames?

<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
  die(mysql_error());
}

mysql_select_db("db", $con);

$result = mysql_query("SELECT * FROM person");

while($row = mysql_fetch_array($result))
{
  echo $row['FirstName'].'<br />';
  echo $row['LastName'].'<br />';
}

mysql_close($con);
?>

[roscor]

use mysql_num_rows()

$result=mysql_query($query);
$num=mysql_num_rows($result);
if ($num==0) {
echo "No Matching Records";
}
 else {
$num_rows = mysql_num_rows($result);

echo "$num_rows Record Found ";
}

[bradgrafelman]

Note that there's no need to use the function twice as roscor did:

if(($num_rows = mysql_num_rows($result)) == 0) {
    echo "No matching rows found.";
} else {
    echo "$num_rows rows found.";
}