## Form data validation with PHP

This tutorial explains how to validate data that has been submitted by a user in a form. We will look at the following types of data validation: Check that a …

Skip to content
# Tag: numbers

## Form data validation with PHP

## String length in PHP

## IEEE754 32-bit floating point binary (single precision)

## Binary fractions – fixed point

## Representing negative numbers in binary using 1s and 2s complement

## Treating text input from a form as an integer or float

## How to convert between decimal and binary

## Variables and Data Types in JavaScript

## Numbers and Math in Python

This tutorial explains how to validate data that has been submitted by a user in a form. We will look at the following types of data validation: Check that a …

This tutorial covers a few things about strings in PHP: the index of strings (each character has an index number) how to find the length of a string (how many …

This video explains how to represent binary fractions using theĀ IEEE754 32-bit floating point binary (single precision) standard.

This video explains fixed point representation of binary fractions.

This video explains how to represent negative numbers in binary.

If you have completed the User Input with Forms tutorial, you will now know how to ask the user for text input through a form, and use that input in …

This video explains how to easily convert a decimal number into binary, and how to also convert a binary number into decimal.

In this second video from the beginners JavaScript tutorial series, you will learn how to create variables and work with strings, integers, and float data types in JavaScript. Variables are …

This tutorial explains how to use numbers and math functions in Python. To do math in Python, you can use a range of arithmetic operators including: + for addition – …