Sorting *argh!*

[Pikapooh]

oki, i feel sick ive spent so long trying to get my head round this sorting stuff.

Basically, i am trying to sort results from a search script i have written.

My search script takes the words inputted, finds matches and calculates a percentage of how close the match is (well it trys to anyway). Now what i need to do is sort the results by the percentage so the user sees teh closest matches at the top of his page.

Aswell as passing the sorter the percentage to sort, its not going to be much use a list of percentages ordered numerically. Ill need to pass a foreign key along with it so i can link to an array which holds the information on each item.

This is the kind of array im tring to sort:
$Item[x][0] = the percentage ( this is what i need it sorting by)
$item[x][1] = this is the foreign key which corrosponds to another array

can anyboy please make me a code sample so i can sort this (or a similar) array and then how to view it back in a sorted list.

thanks very much for your time.

- Jimmy

[stolzyboy]

don't know that i can help but post some code so we can get an
idea of what you are trying to do and remember the php coding tags for easier reading

[Pikapooh]

well basically i have an array that could look like this:

$item[1][0] = 75
$item[1][1] = 1

$item[2][0] = 10
$item[2][1] = 2

$item[3][0] = 90
$item[3][1] = 3

$item[3][0] = 55
$item[3][1] = 4

and i want something that would sort it into something like this:

$item[1][0] = 90
$item[1][1] = 3

$item[2][0] = 75
$item[2][1] = 1

$item[3][0] = 55
$item[3][1] = 4

$item[4][0] = 10
$item[4][1] = 2

It doesnt have to work like that, basically ive never sorted before, and thats the only way i can see how it would work, but there are problery hundreds of methods of doing this.

[ahundiak]

No need for a 2d array here. Just let your keys be the array indexes.

$items = array(1=>75, 2=>10, 3=>90, 4=>55);

asort($items);

foreach($items as $key => $value)
{
  echo "$value $key <br />\n";
}

Lots more on sorting in the manual.

[Pikapooh]

Thanx very much, that seems to have worked a treat 😃

[Pikapooh]

oki, i found that it works perfect.... Xcept it does it the wrong way, it puts the lowest items first, so i tried this:

asort($item);
$item = array_reverse($item);

foreach($item as $key => $value)
{
blabla
}

but for some reason this messes it up. it brings up false results and stuff.

any ideas?

thank you x

[ahundiak]

$item = array_reverse($item,TRUE);

You need the TRUE argument to perserve the key value relations. Otherwise the values get reversed but the keys stay the same.

[Pikapooh]

thank you, works perfect now! ;D