php oop access modifiers

PHP - Access Modifiers Properties and methods can have access modifiers which control where they can...

php numbers

In this chapter we will look in depth into Integers, Floats, and Number Strings. PHP Numbers One thing...

php mysql update

Update Data In a MySQL Table Using MySQLi and PDO The UPDATE statement is used to update existing record...

php mysql select

Select Data From a MySQL Database The SELECT statement is used to select data from one or more tables:...

php mysql select limit

Limit Data Selections From a MySQL Database MySQL provides a LIMIT clause that is used to specify the...

php mysql prepared statements

Prepared statements are very useful against SQL injections. Prepared Statements and Bound Parameters...

php mysql intro

With PHP, you can connect to and manipulate databases. MySQL is the most popular database system used...

php mysql insert

Insert Data Into MySQL Using MySQLi and PDO After a database and a table have been created, we can start...

php mysql create table

A database table has its own unique name and consists of columns and rows. Create a MySQL Table Using...

php json

What is JSON? JSON stands for JavaScript Object Notation, and is a syntax for storing and exchanging...

php if else

Conditional statements are used to perform different actions based on different conditions. PHP Conditio...

php functions

The real power of PHP comes from its functions. PHP has more than 1000 built-in functions, and in...

php forms

The PHP superglobals $_GET and $_POST are used to collect form-data. PHP - A Simple HTML Form The exampl...

php form required

This chapter shows how to make input fields required and create error messages if needed. PHP - Required...

php filter

Validating data = Determine if the data is in proper form. Sanitizing data = Remove any illegal characte...

php filter advanced

Validate an Integer Within a Range The following example uses the filter_var() function to check if...

php file

File handling is an important part of any web application. You often need to open and process a file...

php file open

In this chapter we will teach you how to open, read, and close a file on the server. PHP Open File...

php exercises

You can test your PHP skills with W3Schools' Exercises. Exercises We have gathered a variety of PHP...

php exam

   W3Schools offers an Online Certification Program. The perfect solution for busy profe...