Importing global functions without backslash causes them to show as unused.

[neufena]

an example of this:

use function assert;

gets highlighted in red as unused but

use function \assert;

does not.

[marabesi]

Could you give an example with real code?

Something like the examples in the repo https://github.com/marabesi/php-import-checker/blob/master/test/examples/snippet9.php

[neufena]

Sorry for the delay. This code highlights line 11 red:

<?php

/**
 * Should not highlight used function
 */

namespace App;

use Example;

use function assert;

class Test
{
    public function foo() : Example
    {
        assert(true);
         // ...
    }
}