ggdx/dummy_contact_form.php

## dummy_contact_form.php
<?php
$errors = [];
$success = false;

if ($_POST) {
    // Set required fields
    $requires = ['email', 'name', 'message'];

    foreach($requires as $field) {
        if (!isset($_POST[$field])) {
            $errors[] = $field;
        }
    }

    // No errors: process form data
    if (!count($errors)) {
        // Set DB config
        $db_host = '127.0.0.1';
        $db_db = 'some_app';
        $db_user = 'db_user';
        $db_pass = 'db_pass';
        $db_chars = 'utf8mb4';
        $db_address = "mysql:host=$host;dbname=$db_db;charset=$db_chars";
        $db_opt = [
            PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
            PDO::ATTR_EMULATE_PREPARES   => false,
        ];

        try {
            // Prepare and insert
            $db = new PDO($db_address, $db_user, $db_pass, $db_opt);

            $query = $db->prepare('INSERT INTO contact email, name, message VALUES (?, ?, ?)');
            $query->execute([
               $_POST['email'],
               $_POST['name'],
               $_POST['message'],
            ]);

            $success = 'Thank you, your message has been sent';

        } catch (\PDOException $e) {
            throw new \PDOException($e->getMessage(), (int)$e->getCode());
        }
    } // if count errors
} // if $_POST
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Contact form demo</title>
</head>
<body>

<?php if(count($errors)) { ?>
        <ul class="errors">
            <?php foreach($errors as $error) { ?>
                <li class="error-message">Missing <?= $error; ?> field.</li>
            <?php } // endforeach ?>
        </ul>
    <?php } //endif ?>
    <?php if($success !== false) { ?>
        <div class="success">
            <?= $success; ?>
        </div>
    <?php } //endif ?>

    <form action="<?= $_SERVER['REQUEST_URI']; ?>" method="post">
        <div class="field">
            <label for="name">Your name*</label>
            <input type="text" name="name">
        </div>
        <div class="field">
            <label for="email">Your email address*</label>
            <input type="text" name="email">
        </div>
        <div class="field">
            <label for="message">Message*</label>
            <textarea name="message"></textarea>
        </div>
        <button type="submit">Send</button>
    </form>
</body>
</html>
	<?php
	$errors = [];
	$success = false;

	if ($_POST) {
	// Set required fields
	$requires = ['email', 'name', 'message'];

	foreach($requires as $field) {
	if (!isset($_POST[$field])) {
	$errors[] = $field;
	}
	}

	// No errors: process form data
	if (!count($errors)) {
	// Set DB config
	$db_host = '127.0.0.1';
	$db_db = 'some_app';
	$db_user = 'db_user';
	$db_pass = 'db_pass';
	$db_chars = 'utf8mb4';
	$db_address = "mysql:host=$host;dbname=$db_db;charset=$db_chars";
	$db_opt = [
	PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
	PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
	PDO::ATTR_EMULATE_PREPARES => false,
	];

	try {
	// Prepare and insert
	$db = new PDO($db_address, $db_user, $db_pass, $db_opt);

	$query = $db->prepare('INSERT INTO contact email, name, message VALUES (?, ?, ?)');
	$query->execute([
	$_POST['email'],
	$_POST['name'],
	$_POST['message'],
	]);

	$success = 'Thank you, your message has been sent';

	} catch (\PDOException $e) {
	throw new \PDOException($e->getMessage(), (int)$e->getCode());
	}
	} // if count errors
	} // if $_POST
	?>
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>Contact form demo</title>
	</head>
	<body>

	<?php if(count($errors)) { ?>
	<ul class="errors">
	<?php foreach($errors as $error) { ?>
	<li class="error-message">Missing <?= $error; ?> field.</li>
	<?php } // endforeach ?>
	</ul>
	<?php } //endif ?>
	<?php if($success !== false) { ?>
	<div class="success">
	<?= $success; ?>
	</div>
	<?php } //endif ?>

	<form action="<?= $_SERVER['REQUEST_URI']; ?>" method="post">
	<div class="field">
	<label for="name">Your name*</label>
	<input type="text" name="name">
	</div>
	<div class="field">
	<label for="email">Your email address*</label>
	<input type="text" name="email">
	</div>
	<div class="field">
	<label for="message">Message*</label>
	<textarea name="message"></textarea>
	</div>
	<button type="submit">Send</button>
	</form>
	</body>
	</html>