A little of PHP (server side language) and the "sprintf" function

DecSoft App Builder include a convenient Command Line Compiler, so you can compile your apps from the console.

Save time, resources and money creating apps for Android, iOS and more with the same base of code.

Design for small screen devices but deploy also (without changes) in larger devices like tablets.

Create multiplatform apps with DecSoft App Builder, including Android and iOS with the same base of code.

Compile, convert your modern HTML apps and games into Microsoft Windows executable programs without dependencies.

DecSoft HTML Compiler is easy to use: set your project's options and compile your apps and games in a nutshell.

Save money by purchasing our NeoPlugins bundles. Five, Ten and even the complete NeoPlugins collection at an incredible price!

Take a look at our YouTube channel and subscribe to be notified about new videos!

DecSoft HTML Compiler include a convenient Command Line Compiler, so you can compile your apps from the console.

DecSoft NeoPlugins put your VisualNeo projects into another level with +1,000 new actions for your apps.

Create modern HTML apps and games at another level making things impossible to do even by modern HTML apps and games.

Take a look at some frequently asked questions about us and our products!

Create apps and expand their capabilities by using the world's popular programming language: Javascript.

Apache Cordova's official plugins are supported out of the box and there are hundreds of plugins ready to use.

DecSoft App Builder integrates an Open AI assistant in order to assist you while developing your apps.

DecSoft NeoPlugins are available in both runtime and designtime flavours to keep your apps as small as possible.

Ade Wale

Hi David,

What could be the issue with this line of code?

$message = sprintf("%s <%s>\n\n%s", $name, $email, $comments);

The print is just <> but I am expecting the send name and his/her comment.

Thanks

DecSoft

Hello Ade,

At a first view, the "sprintf" function format string appear good, then, if you get "empty" strings, there cannot be other reason than the variables "$name", "$email" and "$comments" are not filled as you expected.

Purchase one or more licenses of our products if they are useful to you!

Ade Wale

Hi,

I read about sprintf on the website and after implement the idea I got from their on AB.

This error message came displayed

[img=error.png]https://www.decsoftutils.com/_support/uploads/cd06e80ad6f7f5e082422a18dd2ec7ab.png[/img]

What could be the issue?

DecSoft

Hello Ade,

Please, can you provide me with a little application sample in order to try to reproduce the problem here? I can't figure how to help you without an small sample Ade...

Purchase one or more licenses of our products if they are useful to you!

Ade Wale

Hi David,

Check your email I have sent the sample project I am playing with.

I tried this php script too

<?php<br>session_start();<br>if( isset($_POST['name']) && ($_POST['email']) && $_POST['comments'] )<br>{
	$to = 'myemail@gmail.com'; // Replace with your email	<br>	$subject = 'Message from website'; // Replace with your $subject<br>	$headers = 'From: ' . $_POST['email'] . "\r\n" . 'Reply-To: ' . $_POST['email'];	<br>	
	$message = 'Name: ' . $_POST['name'] . "\n" .<br>	           'E-mail: ' . $_POST['email'] . "\n" .<br>	           'Subject: ' . $_POST['subject'] . "\n" .<br>	           'Message: ' . $_POST['message'];<br>	
	mail($to, $subject, $message, $headers);	<br>	if( $_POST['copy'] == 'on' )<br>	{<br>		mail($_POST['email'], $subject, $message);<br>	}<br>}
?>

DecSoft

Hello Ade,

Two things to note:

1º Your script must respond with an "http_response_code(200);" to avoid the Http Client's Error event to be fired.

2º Take care with the email input. Since they are an email input, for example, Internet Explorer put a value of "undefined" if the input's value is not a valid email address. May you can use the IsEmail action in the application.

Hope this information can help to solve your problem!

Purchase one or more licenses of our products if they are useful to you!

Ade Wale

Hi,

I am your PHP script "AS IS" that come with AB.

1. This is line code has take care of respond with an "http_response_code(200);" correct me if I am wrong.

if (mail('myemail@domainname.com', 'Send The Message To My Inbox', $message)) {<br>    // Mail sent<br>    http_response_code(200);<br>  } else <br>........

2. The email input has been taking care with this line of code:

$email = filter_input(INPUT_POST, 'EmailInput', FILTER_VALIDATE_EMAIL); and

IfEx "([NameInput.Value] == '') || ([EmailInput.Value] == '') || ([CommentsTextarea.Value] == '')"</p>
<p>  // If not, advert to the user<br>  AlertBox "Please, provide all the feedback information" "warning"<br>Else

Regarding the Internet Explorer I am not consider it at the moment because this will be use only in Android platform.

After could of try and error in the PHP script. I have not got it working.

DecSoft

Hello Ade,

The "feedback.php" script including in the Calculator sample is the below one:

<?php</p>
<p>// Enable CORS (http://enable-cors.org/server_php.html)<br>header('Access-Control-Allow-Origin: *');</p>
<p>// Access-Control headers are received during OPTIONS requests<br>if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {<br>  if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD']))<br>    header("Access-Control-Allow-Methods: GET, POST, OPTIONS");<br>  if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']))<br>    header("Access-Control-Allow-Headers: {$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']}");<br>  exit;<br>}</p>
<p>// Recolect and validate the input data<br>$email = filter_input(INPUT_POST, 'email', FILTER_VALIDATE_EMAIL);<br>$name = filter_input(INPUT_POST, 'name', FILTER_SANITIZE_SPECIAL_CHARS);<br>$comments = filter_input(INPUT_POST, 'comments', FILTER_SANITIZE_SPECIAL_CHARS);</p>
<p>// Test if the input data is valid<br>if (($email !== false) && ($name !== false) && ($comments !== false)) {</p>
<p>  // Prepare our mail message<br>  $message = sprintf("%s <%s>\n\n%s", $name, $email, $comments);</p>
<p>  if (mail('info@decsoftutils.com', 'App Builder Calculator Feedback', $message)) {<br>    // Mail sent<br>    http_response_code(200);<br>  } else {<br>    // mail function fail!<br>    http_response_code(500);<br>  }<br>} else {<br>  // Invalid input data<br>  http_response_code(406);<br>}

As you can see we play with response codes, then we can use such response codes our the app.

About the email validation, I note that the variable can become "undefined", which is not "" (empty) but a different thing. Anyway, we always must validate the user's input also in the app's server.

Purchase one or more licenses of our products if they are useful to you!

Ade Wale

Hi David,

Thanks issued solved.

AB Ninja rock!

DecSoft

Hello!

Hi David,

Thanks issued solved.

AB Ninja rock!

Glad to know!

Purchase one or more licenses of our products if they are useful to you!

Everybody can read the DecSoft support forum for learning purposes, however only DecSoft customers can post new threads. Purchase one or more licenses of some DecSoft products in order to give this and other benefits.