How to isolate a single column of values from a 2d array
00:20 12 Jan 2011

I have this $record array

array(4) { 
[0]=> array(2) { ["ROLE_ID"]=> string(1) "2" ["SUBFUNCTION_ID"]=> string(3) "904" } 
[1]=> array(2) { ["ROLE_ID"]=> string(1) "2" ["SUBFUNCTION_ID"]=> string(3) "903" } 
[2]=> array(2) { ["ROLE_ID"]=> string(1) "2" ["SUBFUNCTION_ID"]=> string(3) "902" } 
[3]=> array(2) { ["ROLE_ID"]=> string(1) "2" ["SUBFUNCTION_ID"]=> string(3) "901" } 
}

How can i manipulate it so it will become like this?

array("901","902","903","904");

Thanks in advance

php arrays multidimensional-array filter