PHP form to insert into database, check for nothing entered

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;
}
?>

try using required attribute in the frontend, it will throw error automatically — Satya
– Satya, Commented Nov 10, 2017 at 5:37
Use emtpy on all fields that are expected... consult manual though if 0 or other specific values are expected.. — chris85
– chris85, Commented Nov 10, 2017 at 5:38
you're using the && operator to test all fields at once. this will return true if just one field has a value. Use the || operator instead. — gmfm
– gmfm, Commented Nov 10, 2017 at 5:45

B. Desai · Accepted Answer · 2017-11-10 05:40:13Z

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;
}

answered Nov 10, 2017 at 5:40

B. Desai

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ggbranch · Accepted Answer · 2017-11-10 05:38:30Z

0

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

This should be 'or'

answered Nov 10, 2017 at 5:38

ggbranch

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