Validating form input php
You may also enhance your already existing forms with adding some fancy effects that are presented in this tutorial. Info: If you’d like to modify your existing forms, skip the HTML and CSS sections of this tutorial and go ahead to step number five.Otherwise, if you’re planning to create a new form, start reading since the beginning.
This tutorial will help you to add more functionality to your forms that leads to better user experience and better website quality.$_POST is an array of variables passed to the current script via the HTTP POST method.Information sent from a form with the GET method is visible to everyone (all variable names and values are displayed in the URL). Note: GET should NEVER be used for sending passwords or other sensitive information!It is very essential to have the input to your form validated before taking the form submission data for further processing.When there are many fields in the form, the PHP validation script becomes too complex.Let’s start with some brief explanation of what are we going to do.
I’m sure that you have already seen a lots of different forms and you already noted that filling in some of them was much more convinient than filling in other ones.
Moreover, since you are doing the same or similar validation for most of the forms that you make, just too much of duplicate effort is spent on form validations.
Note: You can make web forms quickly with Simfatic Forms.
The “validation descriptor” is a string specifying the type of validation to be performed.
For example, “req” means required, “alpha” means allow only alphabetic characters and so on.
Proper validation of form data is important to protect your form from hackers and spammers! This array holds key/value pairs, where keys are the names of the form controls and values are the input data from the user. 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.