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Come recuperare più righe dal database in PHP

fai così 

<?php
$servername="localhost";
$username="root";
$conn=  mysql_connect($servername,$username)or die(mysql_error());
mysql_select_db("testing",$conn);
$sql="insert into login (src,dest)values('$from','$tona')";
$result=mysql_query($sql,$conn) or die(mysql_error());
$res = mysql_query("SELECT * FROM login");
$numrows = mysql_num_rows($res);
while ($result=mysql_fetch_array($res)){

    echo $result['src']."<br/>";

}
setcookie('a',$numrows);