Warning: mysql_result() expects parameter 1 to be resource, boo

<?php


//function d'inscription

function inscrire_utilisateur($pseudo,$password,$email,$sexe,$situation,$apropos)
{
$password = sha1($password);
mysql_query("INSERT INTO utilisateurs(id,pseudo,password,email,sexe,situation,apropos,avatar)
VALUES('','$pseudo','$password','$email','$sexe','$situation','$apropos','defaut.jpg')
") or die(mysql_error());
}

// la function qui va verifier si pseudo existe

function pseudo_existe($pseudo)
{
	$query = mysql_query("SELECT COUNT(id) FROM utilisateurs WHERE pseudo='$pseudo'");
	return mysql_result($query,0);
}
// la function qui va verifier si email existe

function email_existe($email)
{
	$query = mysql_query("SELECT COUNT(id) FROM utilisateurs WHERE email='$email'");
	return mysql_result($query,0);	
}

?>