PHP tutorials , php tutorials for beginners , tutorials for php

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PHP Tutorials
What is PHP
gt PHP which stands for Hypertext Preprocessor is
a web server-side scripting language designed for
web development. gt It is a general purpose
programming language that can be used for
multiple applications such as setting-up security
for web information and manipulation of data
within database more especially MySQL as we will
see later in our tutorials and much more.gt PHP
helps in making work easy especially when using
the inbuilt functions and connecting to a
database.
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Features of PHP
gt PHP is the most popular scripting language used
for web development. gt PHP is use to develop
static as well as dynamic websites. gt
Interesting thing about PHP is it is free , open
source (no need to buy license to create personal
as well as commercial applications) and
server-side scripting language(the code is always
executed on the server and generated output is
returned to the end user) gt PHP is faster than
other scripting language like ASP and JSP. gt
PHP provides two options to write your code I.e.
you can write your HTML code and embed PHP code
inside the HTML code or you can have option to
write HTML code inside PHP code.We will see how
to write them in upcoming tutorials.
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Environment setup

• gt In order to create and run PHP programs on your
  pc and before uploading them to hosts for
  worldwide connection, you need a local server.
  gt A server will help to enhance communication
  between scripts thus enabling your application
  run smoothly. gt For this purpose you need a
  software like Xampp or other options like Wampp
  but in this case we are going to use Xampp.

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XAMPP installation

• As we already know In order to create and run PHP
  programs on your pc and before uploading them to
  hosts for worldwide connection, you need a local
  server. Follow the steps given below to install
  XAMPP on your local computer. Locate the
  downloaded programs i.e. XAMPP setup file gt
  The best directory to get you to your downloaded
  program is downloads/programs and look for the
  Xampp executable file. Double-click it or
  Running program as an administrator gt Right
  click on the icon of the XAMPP program
  (executable file) and select the option Run as
  administrator from the drop down list.

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PHP - Database

• gt More often we would like to keep information
  about our users for later reference with our
  website, we thus resolve to using databases. gt
  PHP helps in making work easy especially when
  using the inbuilt functions and connecting to a
  database. gt With PHP, you can connect to
  database and perform the databases operations
  like insert,delete,update and many more. gt
  MySQL is mainly use for simplicity in storing
  website data for example user-names and
  passwords, it is better to have a database for
  reference. gt MySQL provides a better interface
  for which we can manipulate our data. gt Before
  doing anything with MySql database, ensure you
  start MySql module in the Xampp control panel.
  gt Our next topics will take us through the
  process of connecting and manipulating data in
  our database and the website.

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PHP - MYSQL Connect

• gt This part is very important and must be
  included in every file where we want to connect
  to database and retrieve or send data to a
  database. gt The better version of doing it is
  to create a file with the connection
  functionality and include or require in this
  other files. gt The function for creating the
  connection is mysql_connect(server_name,
  username, password) gt By default, the php
  admin provides that the username to be root and
  password is null i.e . gt To start the PHP
  admin for database, click the admin button for
  MySql module in the xampp control panel.

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PHP - MYSQL Update

• gt Many at a times, users would like to update
  their information in your website such as the
  username, or email or the reset a password gt We
  thus must therefore provide the with this
  functionality to change these things according to
  user needs. gt To enhance this, we use the
  UPDATE query in PHP queries. gt we can specify
  which data we want to update the data using the
  WHERE clause gt For example lets change the
  name Brianfrom previous example to John and email
  example_at_gmail.com to someone_at_gmail.com

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PHP - MYSQL Select

• gt The SELECT query allows us to get information
  from the database. gt We use SELECT query to get
  all the information or specific information from
  the database. gt To get all the information from
  database we use a i.e SELECT FROM
  table_name. gt To get information of a specific
  field we specify it in the query i.e let us
  select information from the field username i.e
  SELECT username FROM table_name. gt This
  module also allows the selection of data for a
  specific object using the WHERE clause.gt Lets
  for example write a simple program to display all
  id, username and emails from our table

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PHP - Sample Application

• gt We have now come to the end of our tutorials.
  gt Attached is a a sample application for a
  voting system in an institution.You can also use
  this voting system to do online shopping.
  Instruction on installing the online voting
  system1.Download the folder Dekut here. 2.Save
  the folder in htdocs as we do always in xampp
  folder in c disk. 3.Start both apache an mysql
  in xampp control panel. 4.Click admin for the
  mysQl option in xamp control pannel.

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