How to Parallel Get File Extension in PHP - Code Snippet

// Task: Parallel Get File Extension
// Language: PHP

function parallel_get_file_extension() {
    // Implementation for Parallel Get File Extension
    $ result = ...; // Initialize variable
    // TODO: Implement core logic here
    // Step 1: Prepare data
    // Step 2: Process Parallel Get File Extension
    echo("Done");
}