Предупреждение: использование неопределенной константы
Так что после того, как я нажму quizform.php есть предупреждение:
Warning: Use of undefined constant choice1 - assumed 'choice1' (this will throw an Error in a future version of PHP)
это появляется. это было сказано на 81-й линии.
Что я уже пробовал:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width-device-width, initial-scale=1, shrink-to-fit=no">
<title>Random Quiz</title>
<!-- Bootstrap core CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<!-- customized css -->
<link rel="stylesheet" type="text/css" href="css/intro.css">
</head>
<body>
<div class="col-sm-10 border p-4">
<h2> Quiz </h2>
<p>Test your knowledge with this short 5 question quiz!</p>
<?php
//Connect to DB
$hostdb = "localhost";
$userdb = "root";
$passdb = "";
$namedb = "quiz";
$conn = new mysqli($hostdb, $userdb, $passdb, $namedb);
if($conn->connect_errno)
{
echo "Connection error " . $conn->connect_errno . " " . $conn->connect_error;
}
//Close php block for HTML stuff
?>
<!-- Post to results page -->
<form action="quizResults.php" method="POST" id="quizform">
<?php //Open new php block
function GetRandomNumbers($min,$max,$count)
{
$nonrepeatarray = array();
for($i = 0; $i < $count; $i++)
{
$rand = rand($min,$max);
//If value is already in the array, recalc rand until
//reaching value not in array
while(in_array($rand,$nonrepeatarray))
{
$rand = rand($min,$max);
}
//Add it to the array
$nonrepeatarray[$i] = $rand;
}
return $nonrepeatarray;
}
//Set to select 5 random questions from a pool of 15 questions
$questionNumbers = GetRandomNumbers(1, 15, 5);
$sql = "SELECT * FROM introQuiz";
$result = $conn->query($sql);
if ($result->num_rows > 0)
{
$qCount = 1;
$selCount = 1;
while($row = $result->fetch_assoc())
{
if( in_array($qCount, $questionNumbers))
{
//Print the question
echo "<div id='question'>".$selCount.". ".$row["question"]."<br><br>";
$choiceArray = array();
//Print the selection
$choiceArray[0] = "<input type='radio' name='".$qCount."' value='1'style='margin: 0 10px 0 10px'>".$row[choice1];
$choiceArray[1] = "<input type='radio' name='".$qCount."' value='2'style='margin: 0 10px 0 10px'>".$row[choice2];
$choiceArray[2] = "<input type='radio' name='".$qCount."' value='3'style='margin: 0 10px 0 10px'>".$row[choice3];
$choiceArray[3] = "<input type='radio' name='".$qCount."' value='4'style='margin: 0 10px 0 10px'>".$row[answer];
//print_r( $choiceArray );
$answerOrder = GetRandomNumbers(0, 3, 4);
//print_r( $answerOrder );
for($answerSel = 0; $answerSel <= 3; $answerSel++ )
{
$selection = $answerOrder[$answerSel];
echo $choiceArray[$selection];
echo "<br>";
}
echo "</div><br><br>";
$selCount++;
}
$qCount++;
}
echo "<input type='submit' value='Submit' name='Submit'>";
}
else
{
echo "0 results";
}
$conn->close();
?>
</form><br>
</div>
<!-- Bootstrap core JavasSript -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
</body>
</html>