MySQL randomly selected questions - php

Question

I can't find what I need. I trying to create at quizzer that takes questions from the database. Currently, it takes all the questions in the database and what I need it to take it randomly 10 questions. I am just starting to learn how to code.
Here are my getting questions code with answers:
<?php
//Set question number
$number = (int) $_GET['n'];
/*
* Get total questions
*/
$query = "SELECT * FROM `klausimai`";
//Get result
$results = $mysqli->query($query) or die($mysqli->error.__LINE__);
$total = $results->num_rows;
/*
* Get Question
*/
$query = "SELECT * FROM `klausimai`
WHERE question_number = $number";
//Get result
$result = $mysqli->query($query) or die($mysqli->error.__LINE__);
$question = $result->fetch_assoc();
/*
* Get Choices
*/
$query = "SELECT * FROM `atsakymai`
WHERE question_number = $number";
//Get results
$choices = $mysqli->query($query) or die($mysqli->error.__LINE__);
?>

Answer 1

As mentioned above, limit the klausimai query results to 10 by using the SQL LIMIT statement ($query = "SELECT * FROM klausimai LIMIT 10";):
<?php
//Set question number
$number = (int) $_GET['n'];
/*
* Get total questions
*/
$query = "SELECT * FROM `klausimai` LIMIT 10";
//Get result
$results = $mysqli->query($query) or die($mysqli->error.__LINE__);
$total = $results->num_rows;
/*
* Get Question
*/
$query = "SELECT * FROM `klausimai`
WHERE question_number = $number";
//Get result
$result = $mysqli->query($query) or die($mysqli->error.__LINE__);
$question = $result->fetch_assoc();
/*
* Get Choices
*/
$query = "SELECT * FROM `atsakymai`
WHERE question_number = $number";
//Get results
$choices = $mysqli->query($query) or die($mysqli->error.__LINE__);
?>

Answer 2

Your Code good to go, but to print 10 random question fetched directly from your mysql database, Execute the following query :
$query = SELECT * FROM `klausimai`
ORDER BY RAND()
LIMIT 10;
while(row=mysql_fetch_array($query) {
echo $row['question_feild'];
//Replace 'question_feild' it with your question_body column of your table
//assuming you have 2 choices for a particular question
echo $row['choice1']; // Same replace it with your choice/answer columns
echo $row['choice2']; // Same replace it with your choice/answer columns
}

Answer 3

Try this :
/*
* Get Questions
*/
$query = "SELECT * FROM `klausimai` ORDER BY RAND() LIMIT 10";
$result = mysqli_query($conn, $query);
while($row = mysqli_fetch_assoc($result)){
echo "Question number " . $row["question_number"] . "<br/>";
echo "Choices of question are:<br/>";
/*
* Get Choices
*/
$query = "SELECT * FROM `atsakymai` WHERE `question_number` = " . $row["question_number"];
$result = mysqli_query($conn, $query);
$i = 1;
while($row2 = mysqli_fetch_assoc($result)){
echo $i.") ".$row2["choice_text"]."<br/>";
$i++;
}
}