Weird save to array in foreach in php - php

Question

Something strange happens during saving into an array inside a foreach.
I'm getting unexpected results so I make this part of code for debuging.
$search_case = new stdClass();
$same_case = array ();
print_r($families);
foreach ($families as $key => $family) {
echo "<br/><br/>";
$same_case['aaaaa'.$key] = $this->search_benef->search_case($family, $search_case);
print_r($same_case);
}
The problem is that when I get function's results for $key = 1 it also change the data in table for $key = 0. To chek that I created aaaaa0 and aaaaa1 names for my table.
Bellow is print_r results:
First print_r I have 2 objects, IBRAHIM and MOHAMMAD
stdClass Object ( [0] => stdClass Object ( [focal] => stdClass Object ( [name] => RENAS [surname] => IBRAHIM [case_number] => 36343 ) [case] => 36343 ) [1] => stdClass Object ( [focal] => stdClass Object ( [name] => AZAD [surname] => MOHAMMAD [case_number] => 54944 ) [case] => 54944 ) )
Second print_r inside foreach loop, in the first loop I get results for IBRAHIM and in the second loop Ι get results for MOHAMMAD, but it removes results for IBRAHIM in aaaaa0.
Array ( [aaaaa0] => stdClass Object ( [old] => stdClass Object ( [hotel] => stdClass Object ( [focal] => stdClass Object ( [id] => 26 [name] => RENAS [surname] => IBRAHIM ) ) ) ) )
Array ( [aaaaa0] => stdClass Object ( [old] => stdClass Object ( [hotel] => stdClass Object ( [focal] => stdClass Object ( [id] => 22 [name] => AZAD [surname] => MOHAMMAD ) ) [athens] => stdClass Object ( [focal] => stdClass Object ( [id] => 24 [name] => AZAD [surname] => MOHAMMAD ) ) ) ) [aaaaa1] => stdClass Object ( [old] => stdClass Object ( [hotel] => stdClass Object ( [focal] => stdClass Object ( [id] => 22 [name] => AZAD [surname] => MOHAMMAD ) ) [athens] => stdClass Object ( [focal] => stdClass Object ( [id] => 24 [name] => AZAD [surname] => MOHAMMAD ) ) ) ) )
Can you explain why this happens? Which is the error?
-- EDIT --
I change my code and I remove 'search_case' function, but I face the same problem. The content changes. Below I paste my new code without the function.
$aaaaa = array ();
foreach ($families as $key => $family) {
echo "<br/><br/>Family->Case Number: " . $family->case;
$db_lists = array('athens' => 'athensDB', 'hotel' => 'hotelDB');
foreach ($db_lists as $key => $db_list) {
$remoteDB = $this->ci->load->database($key, TRUE);
$query = 'SELECT tb.id as id, name, surname FROM beneficiaries tb
left join _map_family_status tmfs ON tmfs.id=tb.family_status
where asylum_case = ' . $family->case . ' AND family_status = 1 GROUP BY asylum_case';
$focal = $remoteDB->query($query)->row();
if ($focal) {
$search_case->old->$key->focal = $focal;
}
}
echo '<br/> '.$family->case.' <br/> ';
$aaaaa[$family->case] = $search_case;
echo "<pre>";
print_r($aaaaa);
echo "</pre>";
}
return $aaaaa;
But the results are dissapointing. Array[36343] content changes with the second loop's content. Below I paste "print_r" results for the two loops.
Family->Case Number: 36343
Array (
[36343] => stdClass Object (
[old] => stdClass Object (
[hotel] => stdClass Object (
[focal] => stdClass Object (
[id] => 26
[name] => RENAS
[surname] => IBRAHIM
)
)
)
)
)
Family->Case Number: 54944
Array (
[36343] => stdClass Object (
[old] => stdClass Object (
[hotel] => stdClass Object (
[focal] => stdClass Object (
[id] => 22
[name] => AZAD
[surname] => MOHAMMAD
)
)
[athens] => stdClass Object (
[focal] => stdClass Object (
[id] => 24
[name] => AZAD
[surname] => MOHAMMAD
)
)
)
)
[54944] => stdClass Object (
[old] => stdClass Object (
[hotel] => stdClass Object (
[focal] => stdClass Object (
[id] => 22
[name] => AZAD
[surname] => MOHAMMAD
)
)
[athens] => stdClass Object (
[focal] => stdClass Object (
[id] => 24
[name] => AZAD
[surname] => MOHAMMAD
)
)
)
)
)