I'm trying to use the function array_diff of PHP, the problem is that I try to do it with two variables that I have in my function.
$var1 = Model::all();
$var2 = Model1::all();
// Trato de eliminar valores repetidos
$var3 = array_diff($var1, $var2);
The error it sends me is:
array_diff (): Argument # 1 is not an array
The problem is already mentioned, $var1 and $var2 are not arrays , is what you expect array_diff() , yes you are using Laravel exist methods of the class Illuminate\Support\Collection to work with collections that is what returns All() .
For your example, use $ collection-> diff ($ collection2)
$var1 = Model::all();
$var2 = Model1::all();
$diff = $var1->diff($var2);
dd($diff->all());
The error message is very clear:
array_diff (): Argument # 1 is not an array
It is telling you that argument 1, that is, $var1 is not an array.
As is evident, array_diff must receive two arrays in parameter, as shown by the PHP Manual :
array_diff ( array $array1 , array $array2 [, array $... ] )
Clearly the call to Model::all(); is not returning an array really .
To test it, just execute this line of code:
var_dump ($var);
The output on the screen will tell you what is $var , if it were an array you should see something like this:
array(3) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
}
If you do not say array at the beginning of the whole it's not an array ...
You should check the all method of the class Model , verifying that this method returns an array.
What is returning you is an Illuminate \ Database \ Eloquent \ Collection. This object has several methods to operate with a collection of elements.
In your case, I inform you that one of those methods is toArray (), which returns an array.
You can try with
$ var1 = Model :: all () -> toArray ();
To see what an array returns, what you'll have to find out is if it's right for your array_diff, because it will most likely return an array of objects from your entity ... The array_diff may not return what you expect. ..
I managed to solve by converting the object into arrays
$var1 = array();
foreach ($var1 as $key => $value) {
$var1[] = $value->id;
}
$var2 = array();
foreach ($var2 as $key => $value) {
$var2[] = $value->id;
}
$var3 = array_diff($var1, $var2);