How can the issue of an invalid Directory resource be resolved in the PHP code snippet?

The issue of an invalid Directory resource in PHP code can be resolved by closing the directory resource after it has been used. This ensures that the resource is properly released and prevents any further issues related to it. 

$dir = opendir('/path/to/directory');

// Use the directory resource

closedir($dir);

Keywords

Directory resource PHP code snippet invalid resolve error.

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