How to use the "reject" method to filter out elements from a collection in illuminate/collections?

To use the "reject" method in the Illuminate/Collections package to filter out elements from a collection, you can follow these steps:

use Illuminate\Support\Collection;

$collection = new Collection([1, 2, 3, 4, 5]);

Use the "reject" method to filter out elements based on a callback function. The callback function should return true for elements that need to be removed from the collection. For example, let's remove all odd numbers:

$filtered = $collection->reject(function ($value, $key) {
    return $value % 2 !== 0;
});

You can now iterate over the filtered collection using a loop or other Collection methods, or simply dump the result:

$filtered->dump();

This will output the filtered collection without the odd numbers:

array:2 [▼
  0 => 2
  3 => 4
]

Alternatively, you can also assign the filtered collection to a new variable:

$filtered = $collection->reject(function ($value, $key) {
    return $value % 2 !== 0;
});

Now, the $filtered variable will contain the filtered collection.

By using the "reject" method, you can easily filter out elements from a collection based on your custom logic.