PHP somme tableau

$matrice[0][0] = 1;
$matrice[0][1] = 3;
$matrice[0][2] = 5;
$matrice[1][0] = 9;
$matrice[1][1] = 0;
$matrice[1][2] = 2;

$somme = 0;
foreach($matrice as $value) {
	if(is_numeric($value)) $somme += $value;
	elseif(is_array($value)) foreach($value as $value2) if(is_numeric($value2)) $somme += $value2;
}
echo $somme;

$matrice[0][0] = 1;
$matrice[0][1] = 3;
$matrice[0][2] = 5;
$matrice[1][0] = 9;
$matrice[1][1] = 0;
$matrice[1][2] = 2;
$somme = 0;
echo '<table>';
foreach($matrice as $value) {
	echo '<tr>';
	foreach($value as $value2){
		$somme += $value2;
		echo '<td>'.$value2.'</td>';
	}
	echo '</tr>';
}
echo '</table>';
echo $somme;