PHP form to insert into database, check for nothing entered - php

Question

My question is, how do I get the form to display an error when the user doesn't input a field into the form. I can get it to work when they don't fill out the form at all and just hit enter, but cannot get it to work if they only fill out a few fields. They could fill out the title field and the run time field and will be able to submit it. How can I get it to make sure that every field is filled out?
<?php
$databaseName = 'movie_database';
$databaseUser = 'root';
$databasePassword = 'root';
$databaseHost = '127.0.0.1';
$conn = new mysqli($databaseHost, $databaseUser, $databasePassword, $databaseName);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
if(isset($_POST['submit'])) {
$value = mysqli_real_escape_string($conn,$_POST['title']);
$value2 = mysqli_real_escape_string($conn,$_POST['rating']);
$value3 = mysqli_real_escape_string($conn,(int)$_POST['Runtime']);
$value4 = mysqli_real_escape_string($conn,(float)$_POST['movie_rating']);
$value5 = mysqli_real_escape_string($conn,$_POST['release_date']);
// Checks for empty fields
if (empty($value) && empty($value2) && empty($value3) && empty($value4) && empty($value5)) {
echo 'Please correct the fields';
return false;
}
// Concatenate the $values into the string
$sql = "INSERT INTO movies(title,rating,Runtime,movie_rating,release_date)
VALUES('$value','$value2','$value3','$value4','$value5')";
if ($conn->query($sql)) {
$msg = "New record created successfully";
} else {
$msg = "Error: " . $sql . "<br>" . $conn->error;
}
$conn->close();
}
?>
<form method="post"/>
<p>Enter Movie Title: <input type="text" name="title"/></p>
<p>Enter Movie Rating(G,PG,PG-13,R): <input type="text" name="rating"/></p>
<p>Enter Movie Runtime in minutes: <input type="text" name="Runtime"/></p>
<p>Enter IMDB Movie Rating(0-10.0): <input type="text" name="movie_rating"/></p>
<p>Enter Movie Release date(YYYY-MM-DD): <input type="text" name="release_date"/></p>
<button type="submit" name="submit">Submit</button
</form>
<?php
if (isset($msg)) {
echo $msg;
}
?>

Answer 1

From Front side you can add required attribute to each input. So add it in every input field like :
<input type="text" name="title" required/>
From back-end side (using PHP) If you want all value must be fill up then change && with || in your condition
// Checks for empty fields
if (empty($value) || empty($value2) || empty($value3) || empty($value4) || empty($value5)) {
echo 'Please correct the fields';
return false;
}

Answer 2

if (empty($value) && empty($value2) && empty($value3) && empty($value4) && empty($value5)) {
echo 'Please correct the fields';
return false;
}
This should be 'or'