function.duplicate - Phpstan

Code example

This error is reported when the same function name is declared in multiple files within the analysed codebase:

php

// file1.php
<?php declare(strict_types = 1);

namespace App;

function helper(): void
{
}

php

// file2.php
<?php declare(strict_types = 1);

namespace App;

function helper(): void
{
}

The same function name is declared multiple times within the registered stub files.

Remove the duplicate function declaration, keeping only one:

diff-php

 <?php declare(strict_types = 1);

 // file2.php
 namespace App;

-function helper(): void
-{
-}

If both declarations are intentionally different, rename one of them:

diff-php

 <?php declare(strict_types = 1);

 // file2.php
 namespace App;

-function helper(): void
+function helperAlternative(): void
 {
 }