Je kan via date("N") de dag van de week ophalen, en dan dat via een Array omzetten naar de afkorting, dus bijv:
[COLOR= #0000BB]<?php
$Week[/COLOR] [COLOR= #007700]=[/COLOR] [URL="http://www.php.net/array"]array[/URL][COLOR= #007700]([/COLOR]
[COLOR= #0000BB]1[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"MA"[/COLOR][COLOR= #007700],[/COLOR]
[COLOR= #0000BB]2[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"DI"[/COLOR][COLOR= #007700],[/COLOR]
[COLOR= #0000BB]3[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"WO"[/COLOR][COLOR= #007700],[/COLOR]
[COLOR= #0000BB]4[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"DO"[/COLOR][COLOR= #007700],[/COLOR]
[COLOR= #0000BB]5[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"VR"[/COLOR][COLOR= #007700],[/COLOR]
[COLOR= #0000BB]6[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"ZA"[/COLOR][COLOR= #007700],[/COLOR]
[COLOR= #0000BB]7[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"ZO"[/COLOR]
[COLOR= #007700]);[/COLOR]
[COLOR= #0000BB]$Dag[/COLOR] [COLOR= #007700]=[/COLOR] [URL="http://www.php.net/date"]date[/URL][COLOR= #007700]([/COLOR][COLOR= #DD0000]"N"[/COLOR][COLOR= #007700]);[/COLOR]
[COLOR= #0000BB]$Afkorting[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]$Week[/COLOR][COLOR= #007700][[/COLOR][COLOR= #0000BB]$Dag[/COLOR][COLOR= #007700]];[/COLOR] [COLOR= #FF8000]// Dit zal nu bijv. DO teruggeven[/COLOR]
?>
Als je het nu voor bijv. morgen/overmorgen wil dan doe je zoeits:
[COLOR= #0000BB]<?php
$Dagen[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]2[/COLOR][COLOR= #007700];[/COLOR] [COLOR= #FF8000]// Aantal dagen vooruit, nu dus overmorgen[/COLOR]
[COLOR= #0000BB]$Week[/COLOR] [COLOR= #007700]=[/COLOR] [URL="http://www.php.net/array"]array[/URL][COLOR= #007700]([/COLOR]
[COLOR= #0000BB]1[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"MA"[/COLOR][COLOR= #007700],[/COLOR]
[COLOR= #0000BB]2[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"DI"[/COLOR][COLOR= #007700],[/COLOR]
[COLOR= #0000BB]3[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"WO"[/COLOR][COLOR= #007700],[/COLOR]
[COLOR= #0000BB]4[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"DO"[/COLOR][COLOR= #007700],[/COLOR]
[COLOR= #0000BB]5[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"VR"[/COLOR][COLOR= #007700],[/COLOR]
[COLOR= #0000BB]6[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"ZA"[/COLOR][COLOR= #007700],[/COLOR]
[COLOR= #0000BB]7[/COLOR] [COLOR= #007700]=>[/COLOR] [COLOR= #DD0000]"ZO"[/COLOR]
[COLOR= #007700])[/COLOR]
[COLOR= #0000BB]$Dag[/COLOR] [COLOR= #007700]=[/COLOR] [URL="http://www.php.net/date"]date[/URL][COLOR= #007700]([/COLOR][COLOR= #DD0000]"N"[/COLOR][COLOR= #007700]);[/COLOR]
[COLOR= #0000BB]$Dag[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]$Dag[/COLOR][COLOR= #007700]+[/COLOR][COLOR= #0000BB]$Dagen[/COLOR][COLOR= #007700];[/COLOR]
[URL="http://www.php.net/if"]if[/URL][COLOR= #007700]([/COLOR][COLOR= #0000BB]$Dag[/COLOR] [COLOR= #007700]>[/COLOR] [COLOR= #0000BB]7[/COLOR][COLOR= #007700]){[/COLOR] [COLOR= #0000BB]$Dag[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]$Dag[/COLOR] [COLOR= #007700]-[/COLOR] [COLOR= #0000BB]7[/COLOR][COLOR= #007700]; }[/COLOR]
[COLOR= #0000BB]$Afkorting[/COLOR] [COLOR= #007700]=[/COLOR] [COLOR= #0000BB]$Week[/COLOR][COLOR= #007700][[/COLOR][COLOR= #0000BB]$Dag[/COLOR][COLOR= #007700]];[/COLOR] [COLOR= #FF8000]// Dit zal nu bijv. ZA teruggeven[/COLOR]
?>