unset row from multidimension array - php

Question

I have two arrays:
array one is named as $input that output:
Array
(
[0] => Array
(
[reference_no] => 306334510
[archive_no] => 20140102900152506
)
[1] => Array
(
[reference_no] => 22936619
[archive_no] => 20140104900153643
)
[2] => Array
(
[reference_no] => 30211132
[archive_no] => 20140109001536461
)
[3] => Array
(
[reference_no] => 3890623027301
[archive_no] => 201401029001949791
)
)
and second array named as $active that will output:
Array
(
[0] => Array
(
[archive_no] => 20140102900152506
)
[1] => Array
(
[archive_no] => 20140104900153643
)
[2] => Array
(
[archive_no] => 2014010900133107
)
[3] => Array
(
[archive_no] => 2014010900152506
)
[4] => Array
(
[archive_no] => 2014010900153643
)
)
So first I need to check for duplicated rows and I check it by 'archive_no'.
So far this works fine, but now I need to remove those duplicated rows from $input array.
My unset does not seem to work.
code so far:
public function RemoveDublicatedRows($input, $active){
$output = array();
foreach ($input as $inp) {
foreach ($active as $act) {
if ($act['archive_no'] == $inp['archive_no']) {
$output[] = $act;
foreach ($output as $out){
if($inp['archive_no'] == $out['archive_no']){
$inp = array($inp);
unset($input[$inp]);
}
}
}
}
}
return $output;
}

Answer 1

You need to have an index instead of an array ($inp) here:
unset($input[$inp]);
Should be:
if($inp['archive_no'] == $out['archive_no'])
{
$index = array_search($inp, $input);
unset($input[$index]);
}
EDIT: some parts are useless in your code, here is a cleaned code:
public function RemoveDublicatedRows($input, $active)
{
$output = array();
foreach ($input as $inp)
{
foreach ($active as $act)
{
if ($inp['archive_no'] == $act['archive_no'])
{
$output[] = $act;
// maybe you should consider storing $act['archive_no'] instead ?
// It's up to you, depends on what you need...
$index = array_search($inp, $input);
unset($input[$index]);
}
}
}
return $output;
}