What are the advantages and disadvantages of using pathinfo() versus manual string manipulation for extracting file names in PHP?

When extracting file names in PHP, using the pathinfo() function is a more convenient and reliable way compared to manual string manipulation. Pathinfo() provides an array containing information about the file path, including the file name, extension, and directory path. This makes it easier to access specific components of the file path without having to manually parse the string.

```php
// Using pathinfo() function
$file_path = '/path/to/file.txt';
$file_info = pathinfo($file_path);
$file_name = $file_info['filename'];
```

However, one disadvantage of using pathinfo() is that it may not work as expected with certain file paths or filenames that contain special characters. In such cases, manual string manipulation may be more suitable for extracting file names.