array_inserect with a lots of arraysm, or just one

[mikkex]

I have this problem, I have a lot of different search fileds on one page, and the user could use one or many fields to do a search, therefore I use array_intersect to get the right results out from the database, but I want to have a dynamic array_intersect, because of the amount of combinations that could be done is enourmus.

Here is some of the code...

if(isset($forfattarenummer, $titelnummer, $totaltskadespelarenummer, $kvinnligaskadespelarenummer, $manligaskadespelarenummer, $kortare_an_sextio, $sextio_nittio, $langre_an_nittio))
{

$common = array_intersect($forfattarenummer, $titelnummer, $totaltskadespelarenummer, $kvinnligaskadespelarenummer);

foreach ($common as $key => $value) {
   $kat[] =$value;
}
}

elseif(isset($titelnummer, $kvinnligaskadespelarenummer))
{

$common = array_intersect($titelnummer, $kvinnligaskadespelarenummer);

foreach ($common as $key => $value) {
   $kat[] =$value;
}
}


elseif (isset($titelnummer))
{

$common = $titelnummer;

foreach ($common as $key => $value) {
   $kat[] =$value;
}
}

elseif (isset($forfattarenummer))
{

$common = $forfattarenummer;

foreach ($common as $key => $value) {
   $kat[] =$value;
}
}

elseif (isset($totaltskadespelarenummer))
{

$common = $totaltskadespelarenummer;

foreach ($common as $key => $value) {
   $kat[] =$value;
}
}
elseif (isset($kvinnligaskadespelarenummer))
{

$common = $kvinnligaskadespelarenummer;

foreach ($common as $key => $value) {
   $kat[] =$value;
}
}

elseif (isset($manligaskadespelarenummer))
{

$common = $manligaskadespelarenummer;

foreach ($common as $key => $value) {
   $kat[] =$value;
}
}

elseif (isset($kortare_an_sextio))
{

$common = $kortare_an_sextio;

foreach ($common as $key => $value) {
   $kat[] =$value;
}
}
elseif (isset($sextio_nittio))
{

$common = $sextio_nittio;

foreach ($common as $key => $value) {
   $kat[] =$value;
}
}

elseif (isset($langre_an_nittio))
{

$common = $langre_an_nittio;

foreach ($common as $key => $value) {
   $kat[] =$value;
}
}

[SargeZT]

Is there a question here?

[mikkex]

Yeah - sorry to not be clear abou t what I want.

How could I write the code to just have one call for the array_intersect, without having to write all different calls to the function:

Like

array_intersect($dynamic_collection_of_all_arrays); 

Instead of

array_intersect($titelnummer, $kvinnligaskadespelarenummer); 
 array_intersect($titelnummer, $kvinnligaskadespelarenummer); 
array_intersect($forfattarenummer, $titelnummer, $totaltskadespelarenummer, $kvinnligaskadespelarenummer);
array_intersect($forfattarenummer, $totaltskadespelarenummer, $kvinnligaskadespelarenummer);
array_intersect($totaltskadespelarenummer, $kvinnligaskadespelarenummer);

and so on...

[Weedpacket]

Put all of the arrays that might be used in the intersection into an array
$arrays_to_intersect = array($titelnummer, $kvinligaskadespelarenummer, etc.);

Use [man]array_filter[/man] to discard empty arrays (because you don't want to intersect with an empty array). Take what remains and...

Use [man]call_user_func_array[/man] to pass it to array_intersect.

A three-line description for a three-line solution 🙂

[mikkex]

Thanks, I try that.

[mikkex]

It worked!

One problem left, how do I handle tha array of arrays when there only one array in it?

$array_to_intersect = array($forfattarenummer, $titelnummer, $totaltskadespelarenummer, $kvinnligaskadespelarenummer, $manligaskadespelarenummer, $kortare_an_sextio, $sextio_nittio, $langre_an_nittio);
$filter_empty_arrays = array_filter($array_to_intersect);

$total= count($filter_empty_arrays);

if ($total>=2)
{
$intersecta = call_user_func_array("array_intersect",$filter_empty_arrays );
foreach ($intersecta as $key => $value) {
       $kat[] =$value;
    }
}

if ($total<=1)
{

xxx?
}

[Weedpacket]

Then you don't need to do any array intersection....

$interseca = $filter_empty_arrays;