flatting array not working

@dru

because that's not what flatten does: https://laravel.com/docs/master/collections#method-flatten

Why not simply doing this:

$perfiles = explode(',' , $Menu->perfil); 
dump($perfiles);

No need to turn it to a collection. The 0,1,2 .. that you get is just the order of the items, the values are still the correct ones.

@nakov

the thing is that when I only use explode, this code doesn't work well.

if( in_array($rol->rol_nivel, $perfiles) ){
    $menus[ $Menu->posicion_id ][] = $Menu;
}

And I think is because it is a multidimensional array.

@dru

and have you checked if the dd($rol->rol_nivel) is contained in the $perfiles array?

@nakov

when I dd($rol->rol_nivel) the output is 0 as in INT, which is right.

but there are some menues that have only:

#items: array:3 [▼
    0 => "100"
    1 => "1000"
    2 => ""
  ]

so in that it case it shouldn't be true, but after testing it a lot, all return true.

Could it be that the 2 is taken as a 0?

Might be, try using the strict flag on the in_array function:

in_array($rol->rol_nivel, $perfiles, true) 

in_array(0, ['']); // this is true

in that case it allways return a false

So $rol->rol_nivel is always returning integer and $perfiles is always a string which is exploded by comma?

I'm trying a new approach, as I understand, I could make a new array with arraymap.

this is my code:

$perfiles = collect(explode(',' , $Menu->perfil));
                    
                    $flattened = $perfiles->flatMap(function ($values) {
                        if($values !== '' ){
                            dump($values);
                            return $values;
                        } 
                    });
                   dd($flattened->all());

this is the output:

"0"
"10"
"20"
"50"
"100"
"1000"
"30"
"55"
"90"
"80"
"85"
"110"
"88"
[] //> dd($flattened->all()); why is this empty?? 

@bugsysha I even tried using INT with an if statement and it didn't work me well..

@dru

then filter the array to exclude empty values:

$perfiles = array_filter(explode(',' , $Menu->perfil));

if( in_array($rol->rol_nivel, $perfiles) ){
    $menus[ $Menu->posicion_id ][] = $Menu;
}

and keep your in_array usage without the strict flag.

var_dump(array_filter(['', '0'])); // this will be empty array

Thanks for the suggestion, just tried it:

foreach ($menusRecorrido as $Menu){
                   
                    $perfiles = array_filter(explode(',' , $Menu->perfil));
                   
                   
                   dump(in_array($rol->rol_nivel, $perfiles)); // always false
                    if( in_array($rol->rol_nivel, $perfiles) ){
                        
                        $menus[ $Menu->posicion_id ][] = $Menu;
                    }
                    // */ 
                }

$perfiles = explode(',' , $Menu->perfil);

if (in_array((string)$rol->rol_nivel, $perfiles, true)) {
    // logic here
}

YES! this finally worked!

thanks!

also, I was wondering. why flatMap wasn't working, am I using it incorrectly?

  $perfiles = collect(explode(',' , $Menu->perfil));


                    //dd($perfiles);
                    
                    $flattened = $perfiles->flatMap(function ($values) {
                        if($values !== '' ){
                            dump($values); // shows a value
                            return $values;
                        } 
                        
                    });
                    dd($flattened->all()); //is empty.

also, I was wondering. why flatMap wasn't working, am I using it incorrectly?

Cause you always have to return some value from map, flatMap methods.

Replace this

$flattened = $perfiles->flatMap(function ($values) {
                        if($values !== '' ){
                            dump($values); // shows a value
                            return $values;
                        } 
                        
                    });
                    dd($flattened->all());

$flattened = $perfiles->flatMap(function ($values) {
    if($values !== '' ){
        return $values;
    } 
    return $values; // but do something here so if and else are not the same
});