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Function Name: get_attached_file

In WordPress, the get_attached_file function is used to retrieve the local filesystem path of an attached file associated with a specific post or attachment ID. This function is particularly useful when you want to work with the actual file on the server rather than just its URL.

The get_attached_file function takes one optional parameter, which is the attachment ID. If no ID is specified, it will try to retrieve the ID from the global post variable. This function returns the file path as a string if successful, or a boolean false if the file is not found.

Here’s an example usage code:

$attachment_id = 123;
$file_path = get_attached_file($attachment_id);

if ($file_path) {
    // Do something with the file path
    echo "The file path is: " . $file_path;
} else {
    echo "File not found!";

In the above example, we retrieve the file path of the attachment with ID 123 using the get_attached_file function. If the file path exists, we can perform further operations on the file, such as reading its contents or manipulating it in some way. If the file is not found, we display a message indicating that the file was not found.

It’s important to note that this function only works for files that are attached to a post or page in WordPress. If you need to retrieve the file path for other types of files, such as theme or plugin files, you would need to use a different function or approach.

In conclusion, the get_attached_file function is a convenient way to retrieve the local filesystem path of an attached file in WordPress, allowing developers to work directly with the file on the server.

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