How to Traverse Subdirectories and Process Files Iteratively in PHP

In PHP, traversing subdirectories and iteratively processing files can be achieved using RecursiveDirectoryIterator and RecursiveIteratorIterator. Let's understand how to structure your code as desired:

// Initializing the path to the main directory
$main = "MainDirectory";

// Creating a RecursiveDirectoryIterator object to traverse through the main directory
$di = new RecursiveDirectoryIterator($main);

// Looping through the subdirectories
foreach (new RecursiveIteratorIterator($di) as $filename => $file) {
    // Processing each file within the subdirectory
    // Implement your specific operations here based on the purpose of your program
}

In the above code, $main represents the path to the directory containing the subdirectories that you want to traverse. The RecursiveDirectoryIterator($main) creates an iterator that will go through all the subdirectories and files within the main directory. The RecursiveIteratorIterator class adds a recursive feature to the iteration process, enabling the iterator to descend into deeper levels of subdirectories.

Within the loop, you'll have access to both the filename and the file object. This allows you to perform any desired operations on each file, such as opening, reading, writing, or accessing specific attributes.