PHP回顯奇怪的字符

Question

該程序從2個數據庫表中獲取5個變量，並將它們相互比較。 每個正確的匹配都會增加一個正確的變量。

我應該得到一個像“ 100％”的數字，而是得到“ ％”和“？％”等，或者僅僅是隨機字符。

請參見下面的HTML頁面摘錄

<!DOCTYPE html> 
<html xmlns="w3.org/1999/xhtml"; xml:lang="en" lang="en"> 
<head> 
<meta charset="UTF-8" /> 
</head>
<body>
<?php

        $user = $_SESSION['currentUser'];

        $answerCheck1 = mysqli_query($conn,"SELECT * FROM tutorial_exam");
        $answerRowCheck1 = mysqli_fetch_array($answerCheck1);

        $answerCheck2 = mysqli_query($conn,"SELECT * FROM tutorials_test WHERE user_id='$user'");
        $answerRowCheck2 = mysqli_fetch_array($answerCheck2);

        $answerCheckT = mysqli_query($conn,"SELECT * FROM tutorials WHERE user_id='$user'");
        $answerRowCheckT = mysqli_fetch_array($answerCheckT);
        $total = $answerRowCheckT['exam'];
        if($total > 0){$total = $total ."%";}else{$total = '';}

        $counter1 = 1;
        $correct1 = 0;
        $userAnswer1 = '';
        $databaseAnswer1 = '';
        while($counter1 <= 5)
            {
                $index1 = 'q'.$counter1;
                $userAnswer1 = $answerRowCheck2[$index1];
                $databaseAnswer1 = $answerRowCheck1[$index1];
                if($userAnswer1 == $databaseAnswer1)
                {
                    $correct1 = $correct1 + 1;
                    //$correct = $answerRow[$counter];
                }
                $counter1 = $counter1 + 1;
            }
        $mark1 = $correct1 / 5 * 100;
        $mark1 = round($mark1,0);

        echo $mark1 . "%";

?>
</body>
</html>

Answer 1

只是一個建議，請嘗試在頁面的<head>部分添加此內容：

<meta charset="utf-8">

Answer 2

我們使用Server2Go從記憶棒中運行系統，似乎已解決的問題是更新server2Go系統上的PHP版本。

我們在另一個“堆棧溢出”線程中找到了解決方法：其他答案鏈接

PHP回顯奇怪的字符

問題描述

2 個解決方案

解決方案1
1 2015-07-27 09:54:51

解決方案2
0 2015-07-27 13:51:31

PHP回顯奇怪的字符

問題描述

2 個解決方案

解決方案1 1 2015-07-27 09:54:51

解決方案2 0 2015-07-27 13:51:31

解決方案1
1 2015-07-27 09:54:51

解決方案2
0 2015-07-27 13:51:31