Removing elements from an array with another array

[omegared]

Hello All,
let me first warn you guys that I am a bit of a newbie so don't be scared by my awful code.

I have two arrays, the first array is a multidimensional array which you can see below
Array (
[0] => Array (
[guardian_id] => 00001
[guardian_firstname] => Eluvia
[guardian_lastname] => Perez
[guardian_mobile] => data1 [guardian_workname] => data2
[guardian_workph] => data7 [guardian_workphext] => data8
)
[1] => Array (
[guardian_id] => 00002
[guardian_firstname] => Pancho
[guardian_lastname] => Sanchez
[guardian_mobile] => [guardian_workname] =>
[guardian_workph] => [guardian_workphext] =>
)
[2] => Array (
[guardian_id] => 00003
[guardian_firstname] => Elvia [guardian_lastname] => Ayala
[guardian_mobile] => [guardian_workname] =>
[guardian_workph] => [guardian_workphext] =>
)
[3] => Array (
[guardian_id] => 00004
[guardian_firstname] => Nazario C.
[guardian_lastname] => Ayala
[guardian_mobile] =>
[guardian_workname] =>
[guardian_workph] =>
[guardian_workphext] =>
)
[4] => Array (
[guardian_id] => 00005
[guardian_firstname] => Yvonne
[guardian_lastname] => Le Blanc [guardian_mobile] =>
[guardian_workname] =>
[guardian_workph] =>
[guardian_workphext] =>
)
)

and the second array is below.

Array (
[00002] => checked
[00003] => checked
[00005] => checked
)

I would like to use the keys from the second array "00002","00003","00005" and use them to remove the sub-arrays whose key "[guardian_id]" equal the above numbers. I wrote something that almost did want using the unset function but it does not remove the elements, it just empties them. The code I am using is the following.

$this->data is the first array
$omited is the second array

if(is_array($omited)){
	foreach($omited as $key => $value){
		//prefrom check against key
		for($i=0, $size = count($this->data); $i<$size; $i++){
			if($this->data[$i][$needle] == $key){
				unset($this->data[$i]);
			}
		}
	}
	$this->numrows = count($this->data);
	return true;
}else{
	return false;
}

The question is why dose this not work.

[bradgrafelman]

On the manual page for [man]array_search/man, someone has contributed this useful function:

function recursive_array_search($needle,$haystack) {
    foreach($haystack as $key=>$value) {
        $current_key=$key;
        if($needle===$value OR (is_array($value) && recursive_array_search($needle,$value) !== false)) {
            return $current_key;
        }
    }
    return false;
}

You could use it like so:

foreach($omited as $omit)
    if(($key = recursive_array_search($omit, $this->data)) !== FALSE)
        unset($this->data[$key]);

EDIT: Not sure why they had the $current_key variable in there.. you could shorten it a bit:

function recursive_array_search($needle,$haystack) {
    foreach($haystack as $key=>$value) {
        if($needle===$value OR (is_array($value) && recursive_array_search($needle,$value) !== false)) {
            return $key;
        }
    }
    return false;
}

[omegared]

Thank you,
I will try to work this into my code. Originally this was a function all inside of a class. I am going to test it out but I think I am going to have some massaging of code to get it into my class. Will post results soon.