此程序条将输出搜索的目录，但如果找不到，则必须输出一条消息

Question

this program must output a directory that you searched for how ever if its not found a message must appear that the org_name is not found,i don't know how to do that, i keep trying on some if-else but it just won't output it.   

            <?php
    $con=mysql_connect("localhost","root","");

    if(!$con) {
    die('could not connect:'.mysql_error());
    }

    mysql_select_db("final?orgdocs",$con);

    $org_name = $_POST["org_name"];
    $position = $_POST["position"];

    $result = mysql_query("SELECT * FROM directory WHERE org_name = '$org_name' OR position = '$position' ORDER BY org_name");



    echo '<TABLE BORDER = "1">';
    $result1 = $result;
    echo '<TR>'.'<TD>'.'Name'.'</TD>'.'<TD>'.'Organization Name'.'</TD>'.'<TD>'.'Position'.'</TD>'.'<TD>'.'Cell Number'.'</TD>'.'<TD>'.'Email-Add'.'</TD>';
    echo '</TR>';

    while ( $row = mysql_fetch_array($result1) ){

    echo '<TR>'.'<TD>'.$row['name'].'</TD>'.'<TD>'.$row['org_name'].'</TD>';

    echo '<TD>'.$row['position'].'</TD>'.'<TD>'.$row['cell_num'].'</TD>'.'<TD>'.$row['email_add'].'</TD>';
    echo '</TR>';
    }

    echo '</TABLE>';

    ?>

Answer 1

What you want is mysql_num_rows to check your query for how many result rows it has.

http://de2.php.net/manual/en/function.mysql-num-rows.php

if (mysql_num_rows($result)>0) {
  // your thing above with mysql_fetch_array($result1) etc
} else {
  echo 'nor found';
}