[php] afficher la date de la veille

[johand@horus]~/src/php $cat yesterday.php
<?php
$now = time();
$yesterday = $now - 86400;
setlocale(LC_ALL, "fr_BE");
print("Aujourd'hui: " . date("d/M/Y\n", $now));
print("Hier: " . date("d/M/Y\n", $yesterday));
?>
[johand@horus]~/src/php $php yesterday.php
Aujourd'hui: 20/Dec/2006
Hier: 19/Dec/2006

$dateCom=date("Y/m/d-1"); 

$numjour=date("j ")-1;

<?
$numjour=date("j ")-1;
$jour=date("/m/Y"); 


echo $numjour;
echo $jour;
?>

$yesterday = date("d/m/Y", mktime(1, 1, 1, date("m"), date("d") - 1, date("Y")));