Validating form in php


22-Jan-2016 04:41

In this tutorial you will learn how to implement a simple contact form on your website that allows the user to send their comment and feedback through email.

We will use the same PHP function to send the emails.

The PHP filters provide an easy way to sanitize and validate the form data.

As you have seen in the previous tutorial, the process of capturing and displaying the submitted form data is quite simple.

validating form in php-7

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You may opt for sending form data to a different file.You will see how to validate various fields used in general, like text, list, checkbox, radio button and we will also see how to retain POST data, so that after user submits form, even if the data supplied is not valid, data is not lost.Live Demo Following is live demo of the PHP form we will create by the end of this tutorial.We are also going to implement some basic security feature like sanitization and validation of the user's input so that user can not insert potentially harmful data that compromise the website security or might break the application.

In this tutorial we will see how to use PHP to validate the data collected from a form.

empty($_POST['persons'])) { $persons = $_POST['persons']; preg_match("@^([1-9][0-9]*)[email protected]", $persons, $persons_match); if(!