<?php

use Illuminate\Support\Collection;

// Include Laravel's autoload if you're running this outside a Laravel application
require 'vendor/autoload.php';

// Function to measure execution time
function measureTime(callable $callback)
{
    $start = microtime(true);
    $callback();
    return microtime(true) - $start;
}

// Define dataset size
$size = 1000000;

// Generate the dataset first (NOT included in timing)
$rawData = range(1, $size);
shuffle($rawData); // Mix the values randomly

// Measure time to create the PHP array
$arrayCreationTime = measureTime(function () use ($rawData, &$data) {
    $data = $rawData; // Simple assignment
});

// Measure time to create the Laravel collection
$collectionCreationTime = measureTime(function () use ($data, &$collection) {
    $collection = collect($data);
});

// Measure time for PHP array sum
$arraySumTime = measureTime(function () use ($data) {
    $sum = array_sum($data);
});

// Measure time for Laravel Collection sum
$collectionSumTime = measureTime(function () use ($collection) {
    $sum = $collection->sum();
});

// Measure time for iterating using foreach on PHP array
$arrayIterationTime = measureTime(function () use ($data) {
    foreach ($data as $value) {
        $temp = $value * 2; // Some simple operation
    }
});

// Measure time for iterating using each() on Laravel Collection
$collectionIterationTime = measureTime(function () use ($collection) {
    $collection->each(function ($value) {
        $temp = $value * 2; // Some simple operation
    });
});

// Display results with formatted output (no scientific notation)
echo "PHP Array Creation Time: " . number_format($arrayCreationTime, 8) . " seconds\n";
echo "Laravel Collection Creation Time: " . number_format($collectionCreationTime, 8) . " seconds\n";
echo "PHP Array Sum Time: " . number_format($arraySumTime, 8) . " seconds\n";
echo "Laravel Collection Sum Time: " . number_format($collectionSumTime, 8) . " seconds\n";
echo "PHP Array Iteration Time (foreach): " . number_format($arrayIterationTime, 8) . " seconds\n";
echo "Laravel Collection Iteration Time (each()): " . number_format($collectionIterationTime, 8) . " seconds\n";

// Compare performance
echo "\nPerformance Summary:\n";
echo "Faster data structure creation: " . ($arrayCreationTime < $collectionCreationTime ? "PHP Array" : "Laravel Collection") . "\n";
echo "Faster sum operation: " . ($arraySumTime < $collectionSumTime ? "PHP Array" : "Laravel Collection") . "\n";
echo "Faster iteration operation: " . ($arrayIterationTime < $collectionIterationTime ? "PHP Array" : "Laravel Collection") . "\n";