Submitting form data in php

Run the program.js file in vscode The file picks out a username field Submits it to a online file through php This is the HTML file & php file that writes input username data to data.txt So the html file is not really important Question: How to display the form data after getting an error for the existing file after submitting the file.

Submitting Form Data in PHP

I have created a webpage that involves a contact page. This contact page (once submitted the form), will use contact.php to submit the form into a database. I then have a «admin» page which allows me to see the submitted forms.

However, I am having a problem with the submission of the form. Once I click submit, it takes me back to the same page but with no new record in the database. I will write the relevant code below. That may help.

Here is my github for this project too: https://github.com/jacklythgoee/CodeHeads

 'success', 'message' => sprintf('Record with id %d has been created successfully', $id), 'id' => $id, ]; > catch (PDOException $exception) < $_SESSION['flash'] = [ 'type' =>'danger', 'message' => 'Could not create a new record' ]; > header("Location:contact.php"); exit; > > $data = [ 'title' => 'Contact us', 'extra_css2' => [ 'contact.css', 'mainframe.css', ], 'action' => 'contact.php' ]; require_once __DIR__ . '../../templates/contact.phtml';

function validateFormData( string $contact_name, string $contact_email, string $contact_subject, string $contact_message ): array < $errors = []; return $errors; >function createForm( PDO $db, string $contact_name, string $contact_email, string $contact_subject, string $contact_message ): int < $sql = 'INSERT INTO `contact` (`contact_name`, `contact_email`, `contact_subject`, ``, `created_at`) VALUES (:contact_name, :contact_email, :contact_subject, :contact_message, :created_at)'; $stmt = $db->prepare($sql); try < $db->beginTransaction(); $stmt->execute([ ':contact_name' => $contact_name, ':contact_email' => $contact_email, ':contact_subject' => $contact_subject, ':contact_message' => $contact_message, 'created_at' => (new DateTime())->format('Y-m-d H:i:s') ]); $db->commit(); return (int)$db->lastInsertId(); > catch (PDOException $exception) < $db->rollBack(); throw $exception; > >

 "/>  "/>

You can add a hidden input named page to Contact.phtml like this.

Send Email with php with html form data, Then the address to which you send the $.post request on does not allow the POST method. Instead try the GET method, or allow POST . But it is

PHP Form Handling Tutorial

Save HTML Form Data to a MySQL Database using PHP

Learn how to create a form in HTML, then save the data from that form to a MySQL database Duration: 24:38

Getting submitted Form data in PHP sending email

This absolute beginners video startPHP-004 You will learn:-How get submitted form data with Duration: 17:48

How to repopulate form data along with error after submitting form

How to display the form data after getting an error for the existing file after submitting the file. I want the error to be displayed along with the doc title which was previously typed in. For now, I’m able to display the error after submitting but the Title input is empty. I want the typed document title to stay. How to do that? I have added the code for doc.php and code.php below for reference. Hope this is useful to help me out.

  '.$_SESSION['success'].' '; unset($_SESSION['success']); > if(isset($_SESSION['status']) && $_SESSION['status'] !='') < echo ''.$_SESSION['status'].'
 '; unset($_SESSION['status']); > ?>  
Add Documents
 
 Title Documents  Cancel

if(isset($_POST['adddoc'])) < $docTitle=$_POST['doc_title']; $file=$_FILES['doc']; $doc_name=$_FILES['doc']['name']; $doc_tmpName=$_FILES['doc']['tmp_name']; $doc_size=$_FILES['doc']['size']; $doc_error=$_FILES['doc']['error']; $doc_type=$_FILES['doc']['type']; $docExt=explode('.', $doc_name); $docActualExt= strtolower(end($docExt)); $doc_allow=array('pdf','xlsx'); if($doc_error === 0) < if($doc_size < 10000000) < $docDestination='upload/'.$doc_name; move_uploaded_file($doc_tmpName, $docDestination); $query="INSERT INTO documents (doc_title,doc) VALUES (. )"; $stmt=mysqli_stmt_init($conn); if(mysqli_stmt_prepare($stmt,$query))< mysqli_stmt_bind_param($stmt,"ss",$docTitle,$doc_name); mysqli_stmt_execute($stmt); $_SESSION['success']="Doc added"; header('Location: doc.php'); >else < $_SESSION['status']="Not added"; header('Location: adddoc.php'); >> else < $_SESSION['status']="The file is too big!"; header('Location: adddoc.php'); >> else < $_SESSION['status']="Error uploading file"; header('Location: adddoc.php'); >>

Simply add $_POST[‘fieldName’] as an input value

  
Add Documents
 
Title " required>
 Documents  Cancel

How to create a PHP form that submit to self ?, Forms can be submitted to the web page itself using PHP. The main purpose of submitting forms to self is for data validation.

How to submit form data through VSCODE?

I’m having trouble submitting form data through VSCODE. So basically I have a nodejs program that runs on vscode and my goal is to submit some input data from that to a online form for example.

Run the program.js file in vscode
The file picks out a username field
Submits it to a online file through php

This is the HTML file & php file that writes input username data to data.txt

 fclose ($fp); > $lines = file("data.txt"); // Get the file as an array $lines = array_unique($lines); // Merge all duplicate lines // Save as a new file $file = fopen("datacurated.txt", "w"); fwrite($file, implode("", $lines)); fclose($file); ?>

So the html file is not really important but I’m not so good at coding I was trying to send a post data request through vscode but didn’t work. I was wondering if it’s possible to get rid of the html file and keep the php online and have it write the needed data. I need the delete duplicate text function in the php file as well. Is this possible using AXIOS in vscode?

As the request package has been deprecated, install got instead.

(async () => < const < body >= await got.post("https://www.website.com/submit.php", < json: < username: "Whatever. " >>); console.log(body); >)();

You don’t care what www.website.com/submit.php is written in, but you have to be certain that that server will accept a Http Post request from your computer. It is trivial for them to obstruct what you are trying to do by filtering out your domain or by adding a Captcha.

PHP Form Handling, When the user fills out the form above and clicks the submit button, the form data is sent for processing to a PHP file named «welcome.php». The form data

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Dealing with Forms

One of the most powerful features of PHP is the way it handles HTML forms. The basic concept that is important to understand is that any form element will automatically be available to your PHP scripts. Please read the manual section on Variables from external sources for more information and examples on using forms with PHP. Here is an example HTML form:

Example #1 A simple HTML form

There is nothing special about this form. It is a straight HTML form with no special tags of any kind. When the user fills in this form and hits the submit button, the action.php page is called. In this file you would write something like this:

Example #2 Printing data from our form

A sample output of this script may be:

Hi Joe. You are 22 years old.

Apart from the htmlspecialchars() and (int) parts, it should be obvious what this does. htmlspecialchars() makes sure any characters that are special in html are properly encoded so people can’t inject HTML tags or Javascript into your page. For the age field, since we know it is a number, we can just convert it to an int which will automatically get rid of any stray characters. You can also have PHP do this for you automatically by using the filter extension. The $_POST[‘name’] and $_POST[‘age’] variables are automatically set for you by PHP. Earlier we used the $_SERVER superglobal; above we just introduced the $_POST superglobal which contains all POST data. Notice how the method of our form is POST. If we used the method GET then our form information would live in the $_GET superglobal instead. You may also use the $_REQUEST superglobal, if you do not care about the source of your request data. It contains the merged information of GET, POST and COOKIE data.

You can also deal with XForms input in PHP, although you will find yourself comfortable with the well supported HTML forms for quite some time. While working with XForms is not for beginners, you might be interested in them. We also have a short introduction to handling data received from XForms in our features section.

User Contributed Notes 3 notes

According to the HTTP specification, you should use the POST method when you’re using the form to change the state of something on the server end. For example, if a page has a form to allow users to add their own comments, like this page here, the form should use POST. If you click «Reload» or «Refresh» on a page that you reached through a POST, it’s almost always an error — you shouldn’t be posting the same comment twice — which is why these pages aren’t bookmarked or cached.

You should use the GET method when your form is, well, getting something off the server and not actually changing anything. For example, the form for a search engine should use GET, since searching a Web site should not be changing anything that the client might care about, and bookmarking or caching the results of a search-engine query is just as useful as bookmarking or caching a static HTML page.

Also, don’t ever use GET method in a form that capture passwords and other things that are meant to be hidden.

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PHP Form Handling

The PHP superglobals $_GET and $_POST are used to collect form-data.

PHP — A Simple HTML Form

The example below displays a simple HTML form with two input fields and a submit button:

Example

When the user fills out the form above and clicks the submit button, the form data is sent for processing to a PHP file named «welcome.php». The form data is sent with the HTTP POST method.

To display the submitted data you could simply echo all the variables. The «welcome.php» looks like this:

The output could be something like this:

The same result could also be achieved using the HTTP GET method:

Example

and «welcome_get.php» looks like this:

The code above is quite simple. However, the most important thing is missing. You need to validate form data to protect your script from malicious code.

Think SECURITY when processing PHP forms!

This page does not contain any form validation, it just shows how you can send and retrieve form data.

However, the next pages will show how to process PHP forms with security in mind! Proper validation of form data is important to protect your form from hackers and spammers!

GET vs. POST

Both GET and POST create an array (e.g. array( key1 => value1, key2 => value2, key3 => value3, . )). This array holds key/value pairs, where keys are the names of the form controls and values are the input data from the user.

Both GET and POST are treated as $_GET and $_POST. These are superglobals, which means that they are always accessible, regardless of scope — and you can access them from any function, class or file without having to do anything special.

$_GET is an array of variables passed to the current script via the URL parameters.

$_POST is an array of variables passed to the current script via the HTTP POST method.

When to use GET?

Information sent from a form with the GET method is visible to everyone (all variable names and values are displayed in the URL). GET also has limits on the amount of information to send. The limitation is about 2000 characters. However, because the variables are displayed in the URL, it is possible to bookmark the page. This can be useful in some cases.

GET may be used for sending non-sensitive data.

Note: GET should NEVER be used for sending passwords or other sensitive information!

When to use POST?

Information sent from a form with the POST method is invisible to others (all names/values are embedded within the body of the HTTP request) and has no limits on the amount of information to send.

Moreover POST supports advanced functionality such as support for multi-part binary input while uploading files to server.

However, because the variables are not displayed in the URL, it is not possible to bookmark the page.

Developers prefer POST for sending form data.

Next, lets see how we can process PHP forms the secure way!

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