Validating form input php

Validation means check the input submitted by the user.

There are two types of validation are available in PHP.

Such code can now do no harm and is safe to be displayed on a page or inside an e-mail. if quotes are escaped with a slash \ let's remove that.

Sure, it may not look nice and tell you someone has been trying to mess with your script, but the important thing is he/she had failed! If you know exactly what kind of data to expect you can make further steps to ensure the user has entered what you want. Instead of writing the same code over and over again we can create a function that will do all the checking for us.

Each of these allies have their own perimeters which may or may not trust ours. As noted in the Introduction, we trust nothing and nobody.

The common phrase you will have seen in PHP is to never trust “user input”.

You may opt for sending form data to a different file.

Very first we have to create a form in html setting action “#” and method “POST” with some fields, when a user clicks on submit button all the data starts travel in URL but it will be hidden, as we set method = “POST”.You may print some message after sending mail optionally.In this tutorial you'll learn how to sanitize and validate form data using PHP filters.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.

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