Php 使用if条件对两列中相同记录的计数

我有一个表

问题

。此表有两列

rightanswers

和

youranswer

我想获得记录的计数

rightanswer

=

youranswer

。这实际上是我的全部代码

$quizsections = mysql_query("SELECT * FROM quiz_sections");
while($quizsectionsrslt = mysql_fetch_array($quizsections)){
$quizsectionsid        = $quizsectionsrslt['id'];
$quizsectionsheading   = $quizsectionsrslt['heading'];
$quizsectionsquizid    = $quizsectionsrslt['quizid'];
$quizsectionsfirstslot = $quizsectionsrslt['firstslot'];
echo $quizsectionsheading."<br />";
$quizslots = mysql_query("SELECT * FROM quiz_slots WHERE `quizid`=$quizsectionsquizid LIMIT ".($quizsectionsfirstslot-1).", 10");
while($quizslotsrslt = mysql_fetch_array($quizslots)){
    $quizslotids = $quizslotsrslt['questionid'];
    $questions = mysql_query("SELECT * FROM question_attempts WHERE `questionid`=$quizslotids");
    $num_rows = mysql_num_rows($quizslots);
    while($answercount = mysql_fetch_array($questions)){
        $answercountrslt = $answercount['questionid'];
        echo $rightanswer = $answercount['rightanswer'];
        echo $youranser = $answercount['responsesummary']."<br />";
//Here want to display the count of rightanswer and count of wrong answer.
    }
    }
    echo "Total Questions : ".$num_rows."<br /><br />";
}

$quizsections=mysql\u查询（“从测验部分中选择*）；
while（$quizsectionsrslt=mysql\u fetch\u数组（$quizsections））{
$quizsectionsid=$quizsectionsrslt['id']；
$QuizSectionsReading=$quizsectionsrslt[“标题]；
$quizsectionsquizid=$quizsectionsrslt['quizid']；
$quizsectionsfirstslot=$quizsectionsrslt['firstslot']；
echo$quizSectionSheding.“
”；
$quizslots=mysql\u query（“从'quizid`=$quizsectionsquizid LIMIT.$quizsectionsfirstslot-1.”，10）的测验槽中选择*；
而（$quizslotsrslt=mysql\u fetch\u数组（$quizslots））{
$quizslotids=$quizslotsrslt['questionid']；
$questions=mysql\u查询（“从'questionid`=$quizslotids'中的问题尝试中选择*）；
$num_rows=mysql_num_rows（$quizslot）；
while（$answercount=mysql\u fetch\u数组（$questions））{
$answercountrslt=$answercount['questionid']；
echo$rightanswer=$answercount['rightanswer']；
echo$youranser=$answercount['responsesummary']。“
”；
//这里要显示正确答案的计数和错误答案的计数。
}
}
回显“全部问题：”.$num_行。“

”；
}

使用以下内容：

$rightanswercount=0;
$badanswercount=0;

    $questions = mysql_query("SELECT * FROM question_attempts");
        while($answercount = mysql_fetch_array($questions)){
    $rightanswer = $answercount['rightanswer'];
    $youranser = $answercount['youranswer'];
    if($youranser == $rightanswer)
            {
                $rightanswercount=$rightanswercount+1;
            }
            else
            {
               $badanswercount=$badanswercount+1;
            }
        }

echo "Right Count=".$rightanswercount;
echo "Bad Count=".$badanswercount;

使用方法如下：

$rightanswercount=0;
$badanswercount=0;

    $questions = mysql_query("SELECT * FROM question_attempts");
        while($answercount = mysql_fetch_array($questions)){
    $rightanswer = $answercount['rightanswer'];
    $youranser = $answercount['youranswer'];
    if($youranser == $rightanswer)
            {
                $rightanswercount=$rightanswercount+1;
            }
            else
            {
               $badanswercount=$badanswercount+1;
            }
        }

echo "Right Count=".$rightanswercount;
echo "Bad Count=".$badanswercount;

---

如果只想获得count，那么可以使用mysql\u num\u行

$questions = mysql_query("SELECT count(*) FROM question_attempts where rightanswers=youranswer");
$count=mysql_num_rows($questions);

---

如果只想获得count，那么可以使用mysql\u num\u行

$questions = mysql_query("SELECT count(*) FROM question_attempts where rightanswers=youranswer");
$count=mysql_num_rows($questions);

---

您可以通过sql查询完成任务，并根据正确答案执行操作

$questions = mysql_query("SELECT * FROM question_attempts where rightanswers=youranswer");

$count = mysql_num_rows($questions);

// $count is number of right answers
while($row = mysql_fetch_array($questions))
{
    // Stuff on right answers
}

---

您可以通过sql查询完成任务，并根据正确答案执行操作

$questions = mysql_query("SELECT * FROM question_attempts where rightanswers=youranswer");

$count = mysql_num_rows($questions);

// $count is number of right answers
while($row = mysql_fetch_array($questions))
{
    // Stuff on right answers
}

---

阿姆鲁特！它工作得很好。但是，放置此代码后，结果会重复多次。我刚刚更新了我的问题。请调查一下，休瑞！得到了我想要的结果，阿姆鲁！它工作得很好。但是，放置此代码后，结果会重复多次。我刚刚更新了我的问题。请调查一下，休瑞！得到了我想要的结果，我也试过了。请看一下我的代码。我使用了$num_行而不是$count，我也尝试过使用它。请看一下我的代码。我用了$num_行而不是$countVipul，我已经试过了，如果你看一次我的代码，你就会明白。Vipul，我已经试过了，如果你看一次我的代码，你就会明白。按照我的要求得到了结果。按照我的要求得到了结果。