The below diagram shows the difference between get and post Processing the registration form data. as our action is seat.php, so if you click on the submit button, it will pass the data to seat.php, and will run that file. tab, window, or inline frame). An alternative, and perhaps a not so good procedural coding one, is to send the "function name" to a script that then executes the function. Below example contains PHP script to get a single or multiple selected values from given HTML select tag. That's because we are using the "redirect-after-POST" technique as illustrated here: I am assuming you might be able to do the same in php. For example, you can define another form field for a number named num3 (thirdnumber) and other operations between num1, num2 and num3 to compare how the php script output will change.

The last thing we will need to understand before starting our form is the use of INPUT – which will tell browsers to allow an input of text type, to complete a field. in seat php, we are just using echo to display both value, see the code below for form.php and for seat.php, form.php The target attribute specifies a name or a keyword that indicates where to display the response that is received after submitting the form.. I'm not sure I understand what you are trying to achieve as we don't have what username() is supposed to return but you might want to try something like that. The target attribute defines a name of, or keyword for, a browsing context (e.g. I would also recommend you don't echo whole page and rather use something like that, it's much easier to read and maintain: If you don't have an action attribute, the data is sent back to the same URL. The registration form submits data to itself as specified in the action attribute of the form. Since a form can only have a single action, the same PHP script had to handle all four tasks, by identifying which button had been clicked and executing the appropriate code branch. Definition and Usage. For instance, with a login form, there is typically the login, forgotusername, forgotpassword, signin activities that are presented on the form as buttons or anchors. For testing purposes we've removed all the usual JavaScript Form Validation and HTML5 Form Validation so the form can simply be submitted and validated by PHP on the server.. You'll notice that we've used PHP to insert the form action as the current page. When we use the htmlspecialchars() function; then if a user tries to submit the following in a text field: Alternatively you would just use javascript to change the target of the submit. Validate Form Data With PHP. PHP script for SELECT OPTION FIELD: HTML select tag allows user to choose one or more options from the given drop down list. Not a php guy but in .NET i can just post to one form action and just find out which button was clicked by looking at the form post data. The action attribute in the form determines where the form data needs to be sent. The first thing we will do is to pass all variables through PHP's htmlspecialchars() function. and our form action is seat.php, and name for form file is form.php for this example. Here we've used contact.php, so the form data will be sent to that script.