Add newsletter lesson

Author: dawidadach

PHP/newsletter/.mdb

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+{
+  "backend": {
+    "platform": "php7.4"
+  },
+  "meta": {
+    "type": "backend"
+  }
+}

PHP/newsletter/compose.php

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+<form action="send.php" method="POST">
+    <label for="subject">Subject: <br><input type="text" name="subject"></label><br>
+    <label for="body">Body of the email: <br> <textarea name="body" cols="30" rows="10"></textarea></label> <br>
+    <input type="submit" value="Send">
+</form>

PHP/newsletter/connection.inc.php

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+<?php
+
+$user = 'newsletteree02baad';
+$password = 'Secret.1';
+$host = '10.0.0.57';
+$dbase = 'newsletter25361119';
+$table = 'subscribers';
+
+
+// Connect to DBase 
+$dbc = mysqli_connect($host, $user, $password, $dbase)
+    or die("Unable to connect");
+
+
+$query = "CREATE TABLE IF NOT EXISTS $table ( `id` INT NOT NULL AUTO_INCREMENT , `first_name` TEXT NULL , `last_name` TEXT NULL , `email` VARCHAR(60) NOT NULL , `date` DATE NOT NULL , PRIMARY KEY (`id`), UNIQUE `uniqueemail` (`email`)) ENGINE = InnoDB;";
+
+
+$result = mysqli_query($dbc, $query)
+    or die('Error creating table. ' . mysqli_error($dbc));

PHP/newsletter/index.php

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+<h1>Sign up for a my newsletter:</h1>
+
+
+<form action="subscribe.php" method="post">
+    <label for="firstname"> <input type="text" name="firstname"> First name</label> <br>
+    <label for="lastname"> <input type="text" name="lastname"> Last name</label><br>
+    <label for="email"> <input type="text" name="email"> Email: name</label><br>
+    <input type="submit" name="submit" value="Subscribe">
+</form>

PHP/newsletter/out.php

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+<h1>Please enter the email for which you want to unsubscribe:</h1>
+
+<form action="unscubscribe.php" method="POST">
+    <label for="email">Email: <input type="text" name="email"></label> <br>
+    <input type="submit" value="Unsubscribe">
+</form>

PHP/newsletter/package.json

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+{
+  "name": "newsletter",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC"
+}

PHP/newsletter/send.php

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+<?php
+require_once 'connection.inc.php';
+
+$subject = $_POST['subject'];
+$body = $_POST['body'];
+
+$headers = 'From: [email protected]' . '\n';
+$headers .= 'Reply-To: [email protected]' . '\n';
+$headers .= 'Content-Type: text/plain; charset="iso-8859-1"' . "\n";
+$headers .= 'Content-Transfer-Encoding: 8bit';
+
+$query = "SELECT * FROM $table";
+$result = mysqli_query($dbc, $query)
+    or die('Error querying database' . mysqli_error($dbc));
+
+while ($row = mysqli_fetch_array($result)) {
+    $first_name = $row['first_name'];
+    $last_name = $row['last_name'];
+    $email = $row['email'];
+
+    $msg = "Dear $first_name $last_name, \n $body";
+
+    if (mail($email, $subject, $msg, $headers)) {
+        echo 'Email sent to ' . $email . '<br>';
+    } else {
+        echo 'Error while sending an email to: ' . $email;
+    }
+}
+
+
+
+mysqli_close($dbc);

PHP/newsletter/subscribe.php

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+<?php
+require_once 'connection.inc.php';
+
+
+$first_name = $_POST['firstname'];
+$last_name = $_POST['lastname'];
+$email = $_POST['email'];
+
+
+
+$query = "SELECT email FROM $table where email='$email'";
+$result = $dbc->query($query);
+
+if ($result->num_rows > 0) {
+    echo 'This email has been already subscribed. ';
+} else {
+
+    $date = date("Y-m-d H:i:s");
+
+    $query = "INSERT INTO $table (first_name, last_name, email, date) VALUES ('$first_name', '$last_name', '$email', '$date')";
+
+    mysqli_query($dbc, $query)
+        or die("Error inserting email" . mysqli_error($dbc));
+
+    echo 'You have been successfully added.';
+}
+
+mysqli_close($dbc);

PHP/newsletter/unscubscribe.php

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+<?php
+require_once 'connection.inc.php';
+
+$email = $_POST['email'];
+
+$query = " DELETE FROM $table WHERE email='$email'";
+
+$result = mysqli_query($dbc, $query)
+    or die("Error removing email from database" . mysqli_error($dbc));
+
+echo "You have been successfully unsubscribed";
+
+mysqli_close($dbc);