Question

PHP

Review

For the Programming part:

1. Where (Which directory) you store the database connecting information? parallel to htdocs folder why? no one can access except the admin

2. difference between GET and POST methods

3. Include multiple files: include, include_once, require, require_once

4. what is a sticky form?

Answer 1

2.

The GET Method

GET is used to request data from a specified resource.

GET is one of the most common HTTP methods.

Note that the query string (name/value pairs) is sent in the URL of a GET request:

/test/demo_form.php?name1=value1&name2=value2

Some other notes on GET requests:

• GET requests can be cached
• GET requests remain in the browser history
• GET requests can be bookmarked
• GET requests should never be used when dealing with sensitive data
• GET requests have length restrictions
• GET requests are only used to request data (not modify)

The POST Method

POST is used to send data to a server to create/update a resource.

The data sent to the server with POST is stored in the request body of the HTTP request:

POST /test/demo_form.php HTTP/1.1
Host: w3schools.com
name1=value1&name2=value2

POST is one of the most common HTTP methods.

Some other notes on POST requests:

• POST requests are never cached
• POST requests do not remain in the browser history
• POST requests cannot be bookmarked
• POST requests have no restrictions on data length

3.

The “include” php statement is used to include other files into a PHP file. It has two variations, include and include_once. Include_once is ignored by the PHP interpreter if the file to be included.The include statement has the following syntax

<?php
include 'file_name';
?>

The include_once statement has the following syntax

<?php
include_once 'file_name';
?>

HERE,

• “Include/include_once” is the statement that includes file
• “'file_name'” is the name of the file to be included.

Example : Include / Include_once

Suppose you are developing a website that contains the same navigation menu across all the pages.You can create a common header then include it in every page using the include statement Let’s see how this can be done.We will create 2 files names header.php, index.php

Below are the codes for; header.php

<a href="/index.php">Home</a>

<a href="/aboutus.php">About us</a>

<a href="/services.php">Services</a>

<a href="/contactus.php">Contact Us</a>

index.php

<?php

include 'header.php';

?>

The header page above will output PHP Require & PHP require_once The require statement has two variations, require and require_once.The require/require_once statement is used to include file.Require_once is ignored if the required file has already been added by any of the four include statements.It has the following syntax

<?php
require 'file_name';
?>

<?php
require_once 'file_name';
?>

HERE,

• “require/require_once” is the statement that includes file
• “'file_name'” is the name of the file to be included.

4.A sticky form is simply a standard HTML form that remembers how you filled it out. This is a particularly nice feature for end users, especially if you are requiring them to resubmit a form. With this in mind, I'll rewrite register.php one final time so that it's stickier.