PHP object key value comparison of array indexes - php

Question

I have two arrays where indexes of both arrays are contains objects
$array1=array(1) {
[0]=> object(stdClass) (3) {
["aid"]=> string(1) "1"
["a_number"]=> string(1) "0"
["id_of"]=> string(1) "1"
}
}
$array2=array(3) {
[0]=> object(stdClass) (3) {
["id"]=> string(1) "1",
["number"]=> string(1) "0" ,
["flag"]=> string(1) "1" ,
["zflag"]=> string(1) "0" ,
["xflag"]=> string(1) "1"
} ,
[1]=> object(stdClass) (3) {
["id"]=> string(1) "2",
["number"]=> string(1) "2" ,
["flag"]=> string(1) "2" ,
["zflag"]=> string(1) "0" ,
["xflag"]=> string(1) "1"
},
[1]=> object(stdClass) (3) {
["id"]=> string(1) "3",
["number"]=> string(1) "3",
["flag"]=> string(1) "3" ,
["zflag"]=> string(1) "0" ,
["xflag"]=> string(1) "1"
}
}
I want to compare between the value of $id key in all elements of $array2 with the value of $id_of each element of $array1, if it's not exist then return the element of $array1. Below is my code but it doesn't work
public function unanswered($array1,$array2){
if(!(empty($array2))){
$unanswered_arrays=array();
foreach($array1 as $b){
foreach($array2 as $a){
if($b->id != $a->id_of){
array_push($unanswered_arrays,(object)$b);
}
}
}
return $unanswered_arrays;
}
return $array1;
}

Answer 1

If you're using your function as unanswered($array1,$array2) then replace $array1 with $array2 and vice versa in foreach loops or pass unanswered($array2,$array1) instead of.
Demo