Day / Date Problem

[aspect]

Hi,

I have an array which holds a bunch of days as strings i.e Monday, Tuesday etc..

The array varies so sometimes it could have Wednesday, Friday, Saturday in it..
othertimes it may be Friday, Sunday, Monday, Wednesday and so on....

What i need to do, is sort the array in to the order they appear in the week.. (not alphabetically like it is doing)

Any help most appreciated...

(Its prolly summin really easy.. lol)

[devinemke]

assuming you Monday as the first day of week...

<?php
$order = array(
'Monday',
'Tuesday',
'Wednesday',
'Thursday',
'Friday',
'Saturday',
'Sunday'
);

$days = array(
'Wednesday',
'Saturday',
'Monday'
);

foreach ($days as $value)
{
	$key = array_search($value, $order);
	$days_ordered[$key] = $value; 
}

ksort($days_ordered);
print_r($days_ordered);
?>

[aspect]

Wow.... Thanks, That works great...

Just one question....

How does it work?

I'm fine with first bit but whats happening inside the foreach?

foreach ($days as $value)
{
    $key = array_search($value, $order);
    $days_ordered[$key] = $value; 
}

ksort($days_ordered);

[devinemke]

foreach ($days as $value) // loop thru the $days array
{
    $key = array_search($value, $order); // find the corresponding key from the $order array
    $days_ordered[$key] = $value; // add the $value to a new array ($days_ordered) using the ordered key
}

ksort($days_ordered); // sort by keys, which will order according to the $order array

[Weedpacket]

This is one of those problems you could spend ages finding cleverer and cleverer solutions to...

$days_ordered = array_diff($order, array_diff($order, $days));

heh, heh.