gistfile1.php

<?php
/* CONFIGURATION */
$host = 'localhost';
$user = 'root';
$password = 'root';
$db_name = 'euromillions';

$time_to_play = 10000;

/* END OF CONFIGURATION */
/* If you edit something below, the sky will fall on you. Yeah, it's true. Don't try. */

mysql_connect($host, $user, $password);
mysql_select_db($db_name);

function microtime_float() 
{ 
	list($usec, $sec) = explode(" ", microtime()); 
	return ((float)$usec + (float)$sec); 
}

function generateNumber()
{
	return mt_rand(1, 50);
}

function generateStar()
{
	return mt_rand(1, 11);
}

function insertDB($stats_number, $stats_star, $array_numbers, $array_stars)
{
	// Sort arrays. Elements will be arranged from lowest to highest (values).
	sort($array_numbers);
	sort($array_stars);

	// Numbers.
	for ($i=1;$i<=5;$i++)
	{
		$name_var = 'nb_'.$i;
		${$name_var} = $array_numbers[$i-1];
		// Stats
		$stats_number[$array_numbers[$i-1]] += 1;
	}

	// Stars.
	for ($i=1;$i<=2;$i++)
	{
		$name_var = 'star_'.$i;
		${$name_var} = $array_stars[$i-1];
		// Stats
		$stats_star[$array_stars[$i-1]] += 1;
	}

	// Insert into the DB.
	$query = mysql_query("INSERT INTO euromillions (nb_1, nb_2, nb_3, nb_4, nb_5, star_1, star_2) VALUES ('$nb_1', '$nb_2', '$nb_3', '$nb_4', '$nb_5', '$star_1', '$star_2')");

	// We need to always return arrays in order to deal with stats at the end
	return array($stats_number, $stats_star);
}

function initialize()
{
	// Initialize arrays for stats
	$stats_number = array();
	$stats_star = array();

	for ($i=1;$i<=50;$i++)
	{
		$stats_number[$i] = 0;
	}

	for ($i=1;$i<=11;$i++)
	{
		$stats_star[$i] = 0;
	}

	// We need to always return arrays in order to deal with stats at the end
	return array($stats_number, $stats_star);
}

function play($stats_number,$stats_star)
{
	$array_numbers = array();
	$array_stars = array();

	for ($i=1;$i<=7;$i++)
	{
		if ($i >= 1 AND $i <= 5) // Numbers.
		{
			do
			{
				$number = generateNumber();
			} while (in_array($number, $array_numbers));

			// We haven't got the number in the array, let's insert it. Array starts at 0.
			$array_numbers[$i-1] = $number;
		}
		else // Stars
		{
			do
			{
				$star = generateStar();
			} while (in_array($star, $array_stars));

			// We haven't got the star in the array, let's insert it. Array starts at 0.
			$array_stars[$i-6] = $star;
		}
	}
	
	// Everything is ok, let's insert in the DB
	$data = insertDB($stats_number,$stats_star, $array_numbers, $array_stars);

	// We need to always return arrays in order to deal with stats at the end
	return array($data[0], $data[1]);
}

function hardcoreGamer($time_to_play)
{
	// Initialize arrays for stats before we play
	$data = initialize();
	$stats_number = $data[0];
	$stats_star = $data[1];

	if ($time_to_play < 1 OR !is_integer($time_to_play)) // Never trust user input
	{
		$time_to_play = 1;
	}

	for ($i=1;$i<=$time_to_play;$i++)
	{
		$data = play($stats_number,$stats_star);
		$stats_number = $data[0];
		$stats_star = $data[1];
	}

	// We need to always return arrays in order to deal with stats at the end
	return array($stats_number, $stats_star);
}

function displayStats($stats_number, $stats_star, $time_start, $time_to_play)
{
	// Sort arrays. From highest to lowest. We need to keep keys within the array with a descending sort for values so we use the arsort function.
	arsort($stats_number);
	arsort($stats_star);

	echo '<hr/>';
	echo '<h1>Most common numbers</h1>';
	print_r($stats_number);

	echo '<hr />';
	echo '<h1>Most common stars</h1>';
	print_r($stats_star);

	echo '<hr/>';
	echo '<h1>Time</h1>';
	$time_end = microtime_float();
	$time = round($time_end - $time_start, 8);
	$nb_tests_per_second = round($time_to_play / $time);
	echo $time_to_play.' tests executed in '.$time.'s. That is to say '.$nb_tests_per_second.' tests per second.';
}

// Start the chrono
$time_start = microtime_float();
// We play
$data = hardcoreGamer($time_to_play);
// We display stats
displayStats($data[0], $data[1], $time_start, $time_to_play);