_php example of a simple random draw small program based on PHP

A lottery small program, introduction can be controlled, can also be a prize in front of the display, and the program is impossible to obtain! After all the probabilities are x10 together, the value of each item in the new array equals its first few and adds itself.

A number between 0 and the maximum number is then generated, and a loop to see if it belongs to that interval and returns the key for that interval.

The code is as follows

$prize = Array (1 = 3.5,//3.5% probability 2 = 2.5, 3 = 6, 4 = 2, 5 = 42,//42% probability 6 =, 7 = 2, 8 = 4 , 9 = 2);//Final confirmation add equals 100$prizelist = Array (1 = = Array (' Little Fairy '), 2 = = Array (' 5Q coins '), 3 = = Array (' 38888 game Coins '), 4 => ; Array (' 88888 game Coins '), 5 = = Array (' Thanks for participating! '), 6 = = Array (' Welcome to come again next time! '), 7 = = Array (' 10Q coins '), 8 = = Array (' 888 Silver dollar (binding) '), 9 = = Array (' Random advanced mounts (Bindings) '));//unset ($prize [7]); 10Q This prize directly removed $times = ten; $max = 0;foreach ($prize as $k = + $v) {$max = $v * $times + $max; $row [' V '] = $max; $row [' k '] = $k ; $prizeZone [] = $row;} $max--; The threshold value $rand = Mt_rand (0, $max), $zone = 1;foreach ($prizeZone as $k = = $v) {if ($rand >= $v [' V ']) {if ($rand >= $priz ezone[$k + 1][' V ']) {continue;} else{$zone = $prizeZone [$k + 1][' K '];break;}} $zone = $v [' K '];break;} Print_r ($prizeList [$zone][0]);

PHP based on the implementation of a simple draw small program code for everyone to write so much, but are the core code, I hope to learn from you to help.

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