<?php
for($experimentCount=1; $experimentCount<=10; $experimentCount++)  {
$winIfReplace=0;
$truthoseIfChange=0;
$testsCount  = 10000;
$valueChange = array();
for ($j = 0; $j < $testsCount; $j++) {
    $arrayExample = array("0","1","2");
    //$arrayExample-массив для сравнения
    $truth        = rand(0, 2);
    $option       = rand(0, 2);
    $arrayTest    = array(
        $option,
        $truth
    );
    //$arrayTest-формируем массив для удаления из $arrayExample варианта игрока и того варианта что выпад
    $difference   = array_diff($arrayExample, $arrayTest);
    $valueChange  = array_rand($difference);
    //удалим один вариант $valueChange, $valueChange это случайный вариант из массива расхождений $difference
    for ($i = 0; $i <= 2; $i++) {
        if ($arrayExample[$i] != $valueChange && $arrayExample[$i] != $option) {
            $trueOption = $arrayExample[$i];
        }
    }
    //Выбираем вариант который не равен не ранее названному не удалённому варианту
    if ($option == $truth) {
        $truthoseIfChange++;
    } 
    if($trueOption==$truth) {
        $winIfReplace++;
    }
}
$winIfChangeProbability=$winIfReplace/$testsCount;
$loseIfChangeProbability=$truthoseIfChange/$testsCount;
echo "Опыт $experimentCount Изменил $winIfReplace, вероятность $winIfChangeProbability не изменил $truthoseIfChange, вероятность $loseIfChangeProbability\n";
}
// your code goes here

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