array_diff_assoc() argument #1 is not an array php - php

Question

So I have this object:
[
{
"id":1,
"name":"create-users",
"display_name":"Create user",
"description":"Add new user"
},
{
"id":2,
"name":"edit-user",
"display_name":"Edit user",
"description":"Edit existing user"
},
{
"id":3,
"name":"create-post",
"display_name":"Create post",
"description":"create new post"
},
{
"id":4,
"name":"edit-post",
"display_name":"Edit post",
"description":"edit existing post"
}
]
and this other one:
[
{
"id":3,
"name":"create-post",
"display_name":"Create post",
"description":"create new post"
},
{
"id":4,
"name":"edit-post",
"display_name":"Edit post",
"description":"edit existing post"
}
]
Now I am looping through these two objects in nested foreach loops top compare which of the arrays from the two objects are equal(equal key and value pairs).
Here are the foreach loops:
foreach ($role_perms as $role_perm) {
foreach ($all_perms as $all_perm) {
if (array_diff_assoc($all_perm, $role_perm)) {
$all_perm['check'] = 1;
}
}
}
But I have no idea why I keep getting the error
array_diff_assoc(): Argument #1 is not an array
(on the line of code with the if statement.)
Am I doing something wrong? Thanks for any help

Answer 1

array_diff_assoc() is for comparing arrays. And your data is not.
If you want to use array_diff_assoc() modify your data structure so that you have an array of arrays. For instance:
$your_array = [
[
"id" => 3,
"name"=>"create-post",
"display_name"=>"Create post",
"description"=>"create new post"
],
[
"id"=>4,
"name"=>"edit-post",
"display_name"=>"Edit post",
"description"=>"edit existing post"
]
];
Edited:
As a workaround, cast objects to arrays in case you can't modify your data structure.
$object = new stdClass();
$object->a = 'AAA';
$object->b = 'BBB';
var_dump((array) $object);
Output:
array(2) { ["a"]=> string(3) "AAA" ["b"]=> string(3) "BBB" }
In your case:
foreach ($role_perms as $role_perm) {
foreach ($all_perms as $all_perm) {
if (array_diff_assoc((array) $all_perm, (array) $role_perm)) {
$all_perm['check'] = 1;
}
}
}