我想計算我選擇一個選項的次數。那么我選擇了多少次 A,B,C,D,E,F 。我嘗試進行某種形式的計數，但沒有奏效。<form action="Antwoord.php" method="POST"> <input type="text" name="Naam" placeholder="Uw naam:"><?php $sql = "SELECT * FROM questionlist_choice WHERE Qid='1'"; $result = mysqli_query($conn, $sql); if ($result->num_rows > 0) { $i = 0; while ($row = mysqli_fetch_assoc($result)) {$vraag = $row['Vraag'];$vraagA = $row['Vraag_keuzeA'];$vraagB = $row['Vraag_keuzeB'];$vraagC = $row['Vraag_keuzeC'];$vraagD = $row['Vraag_keuzeD'];$vraagE = $row['Vraag_keuzeE'];$vraagF = $row['Vraag_keuzeF'];$kikio = "<div> <br><p>$vraag</p> <input type='radio' name='q[$i]' value='A'required> $vraagA<br> <input type='radio' name='q[$i]' value='B'required> $vraagB<br> <input type='radio' name='q[$i]' value='C'required> $vraagC<br> <input type='radio' name='q[$i]' value='D'required> $vraagD<br> <input type='radio' name='q[$i]' value='E'required> $vraagE<br> <input type='radio' name='q[$i]' value='F'required> $vraagF<br> </div>"; echo $kikio;$i++; }}?><input type="submit"></form>我期待一個回聲或其他東西，顯示我選擇了多少次 A 被選擇了 B 等等。
1 回答
小唯快跑啊
TA貢獻1863條經驗 獲得超2個贊
您可以使用array_count_values()來了解提供了每個答案的數量：
$counts = array_count_values($_POST['q']);
// e.g.: ["A" => 2, "B" => 1, "F" => 1]
然后，您可以通過查看結果來回顯每個答案的數字：
echo "A was answered " . ($counts["A"] ?? 0) . " time(s)<br>";
echo "B was answered " . ($counts["B"] ?? 0) . " time(s)<br>";
echo "C was answered " . ($counts["C"] ?? 0) . " time(s)<br>";
echo "D was answered " . ($counts["D"] ?? 0) . " time(s)<br>";
echo "E was answered " . ($counts["E"] ?? 0) . " time(s)<br>";
echo "F was answered " . ($counts["F"] ?? 0) . " time(s)<br>";
如果您只想列出實際給出的答案，則可以遍歷$counts數組：
foreach ($counts as $answer => $count) {
echo $answer . " was answered " . $count . " time(s)<br>";
}
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