Mysql_fetch_row() expects parameter 1 to be

Bonjour,
J'ai un problème avec la connection MySQL

voici le code:

<?php
echo "connection";
$host="localhost";
$username = 'root';
$password = 'admin';
$connection =mysql_connect ($host, $username, $password );
//echo $connection;
$nomdelabase="labase";
mysql_select_db ($nomdelabase, $connection);
$requete="SELECT * from latable";
$resultat = mysql_query($requete, $connection);
//echo $resultat;
$test =mysql_fetch_row($resultat);
//print_r ($test);
echo $test[2];
?>

Warning: mysql_fetch_row() expects parameter 1 to be resource, boolean given in C:\EasyPHP5.3.0\www\test\affiche.php on line 17

avez vous une idée ? merci d'avance