In Plinko, a ball drops through a field of pegs, moving left or right as it hits each peg. The direction of each move is determined randomly with 0 indicating left and 1 indicating right. The ball's final position (or bucket), determined by the sum of all moves, corresponds to a specific prize or multiplier. The PHP logic for this outcome is in the code block, and explained in more detail below.<pre data-language="plain">//php
$plinko_index = array();
$combined_seed = hash('sha256', $server_seed . ':' . $client_seed . ':' . $nonce);

for ($x=0; $x &lt; 64; $x = $x+4) {
 array_push($plinko_index, $combined_seed[$x] &gt; '7' ? 1:0);
}
$plinko_index = array_splice($plinko_index, 0, $row_count);
$plinko_map = get_plinko_map($risk_type, $row_count);
$multipliers = $plinko_map['multipliers'];
$plinko_ticket = array_sum($plinko_index);
$bucket = $multipliers[$plinko_ticket];
</pre>The code begins by setting up an empty array called $plinko_index, which will store the series of moves—either left or right—that the ball makes as it travels down the Plinko board. To determine this sequence, the game first creates a "combined seed" by merging three key elements: the server's secret seed, the player’s unique client seed, and a nonce (a counter that ensures each play-through is unique). This combined seed is then hashed using the SHA-256 algorithm, resulting in a secure, random-looking string of characters, like afc4b7297df34e12….To decide whether the ball will move left or right at each peg, the code checks every 4th character in the hashed string. Each character can be a number (0-9) or a letter (a-f), which represent values in hexadecimal format. When the code evaluates each 4th character, it compares it to the character '7'. In hexadecimal, characters greater than '7' are the letters from '8' to 'f' (where 'a' represents 10 and 'f' represents 15). So, if a character is one of these letters or a number above '7', the ball moves right, represented as 1; otherwise, it moves left, represented as 0.For example, let’s say the hashed seed is afc4b7297df34e12… (a long string of letters and numbers). The code checks every 4th character in this string to determine the ball's direction. So, it would look at positions 0, 4, 8, and 12, giving the characters 'a', 'b', '7', and '4'. Here’s how these characters translate to moves: 'a' is greater than '7', so it represents a right move (1); 'b' is also greater than '7', so it represents another right move (1); '7' is equal to '7', so it represents a left move (0); and '4' is less than '7', so it represents another left move (0). This sequence gives us [1, 1, 0, 0], meaning the ball moves right, right, left, and then left.The game continues this pattern, building an array of moves in $plinko_index that represents the ball’s full path down the board. Once the sequence is complete, the code adds up the values in this array to find the final bucket number. For instance, if the array ends up as [1, 0, 1, 1, 0, 1], the total is 4, meaning the ball landed in bucket 4.This bucket number is then used to look up the multiplier associated with it, based on the selected risk level and row count. This multiplier is what determines the player’s prize, ensuring each game of Plinko has a fair, random outcome tailored to the player’s choices.

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