两个值相等时HTML表单上的PHP输入验证

以下代码用于用户输入数字的表单

    <input type="number" name="team1" class="inputbox" oninput="validity.valid||(value='')" min="0"> <input type="number" name="team2" class="inputbox" oninput="validity.valid||(value='')" min="0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
    <input type="number" name="team3" class="inputbox" oninput="validity.valid||(value='')" min="0"> <input type="number" name="team4" class="inputbox" oninput="validity.valid||(value='')" min="0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
    <input type="number" name="team5" class="inputbox" oninput="validity.valid||(value='')" min="0"> <input type="number" name="team6" class="inputbox" oninput="validity.valid||(value='')" min="0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
    <input type="number" name="team7" class="inputbox" oninput="validity.valid||(value='')" min="0"> <input type="number" name="team8" class="inputbox" oninput="validity.valid||(value='')" min="0">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

这些数字被发送到roundThree.php，它比较数字1和数字2、数字3和数字4，依此类推。它计算出哪个比另一个高

$teams = Array($team1, $team2, $team3, $team4, $team5, $team6, $team7, $team8, $team9, $team10, $team11, $team12, $team13, $team14, $team15, $team16);
$winCheck = Array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
for ($x=0; $x < count($teams); $x+=2) {

    if ($teams[$x] > $teams[$x + 1]) {
        winCheck[$x] = 1;
    }

    elseif ($teams[$x] < $teams[$x + 1]) {
        $winCheck[$x + 1] = 1
    }
    else {

    }

};

$teams=Array（$team1、$team2、$team3、$team4、$team5、$team6、$team7、$team8、$team9、$team10、$team11、$team12、$team13、$team14、$team15、$team16）；
$winCheck=数组（0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0）
对于（$x=0；$x$teams[$x+1]）{
winCheck[$x]=1；
}
elseif（$teams[$x]<$teams[$x+1]）{
$winCheck[$x+1]=1
}
否则{
}
};

我想使用输入验证来防止用户输入两个彼此相等的数字。我是否可以在其他{}中进行某种验证，以将用户发送回页面并让他们重新输入两个不同的数字？

使用array_unique（）可以返回一个没有重复值的数组。然后将新的唯一阵列与原始阵列进行比较

例如：

if (array_unique($teams) == $teams) {
   // Array is unique
} else {
   header('Location: example.url'); // Bring back to desired page
}