How to Async Count Vowels in PHP - Code Snippet

// Task: Async Count Vowels
// Language: PHP

function async_count_vowels() {
    // Implementation for Async Count Vowels
    $ result = ...; // Initialize variable
    // TODO: Implement core logic here
    // Step 1: Prepare data
    // Step 2: Process Async Count Vowels
    echo("Done");
}