2 dimensional array_diff???

sroughley

Hey all.

If I have these two arrays:

regionList[0][0] = "r01";
regionList[0][1] = "North Yorkshire";

regionList[1][0] = "r02";
regionList[1][1] = "Mersyside";

regionList[2][0] = "r03";
regionList[2][1] = "Shropshire";

regionList[3][0] = "r04";
regionList[3][1] = "Cambridgeshire";

regionList[4][0] = "r05";
regionList[4][1] = "Worcestershire";



regionSelection[0][0] = "r02";
regionSelection[0][1] = "Mersyside";

regionSelection[1][0] = "r03";
regionSelection[1][1] = "Shropshire";

regionSelection[2][0] = "r05";
regionSelection[2][1] = "Worcestershire";

How do I get the following array (regionList minus the values of regionSelection):

newRegionList[0][0] = "r01";
newRegionList[0][1] = "North Yorkshire";

newRegionList[3][0] = "r04";
newRegionList[3][1] = "Cambridgeshire";

Basically what would be done on a single dimensional array using array_diff().

Thank you for your time.

Regards.

Steve.

barand

Maybe use array_filter with suitable user function.

sroughley

I've been tryin to come up with a function to accoomplish this, but I am just not getting anywhere.

Anybody have any ideas? This is getting quite urgent, as it has held up a project for almost 4 days now.

Regards.

Steve.

sroughley

It's all sorted now, thanks to my good friend Mat! Here's how it was done:

foreach( $regionList as $key => $region ){

//Compare regions against selections:
if( !in_array( $region, $regionSelection ) ){
   //Region is not found, so part of difference.
   //So we can add it to our newRegionList
  $newRegionList[] = $region;
}

}

Regards.

Steve.