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Moses D. - PHP Full Tutorial Guide

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PHP Full Tutorial Guide
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Moses D / Gichina W Eds
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PHP Full Tutorial Guide: summary, description and annotation

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Amazon Digital Services LLC, Publisher MICHAEL NAHASHON, 2016. 96 p. ASIN: B01AOT575YThis is a complete PHP tutorial guide that scopes across all that pertains to PHP as a programming language. It has well organized chapters, the ebook contains illustrative examples to enhance greater understanding.
Table of Contents
PHP INTRODUCTION
VARIABLES
DATA TYPE
OPERATOR...
PHP INTRODUCTIONRequirement
PHP VARIABLES
PHP DATA TYPES PHP Data Types
PHP OPERATORSPHP Operators
CONTROL STRUCTURES
PHP ARRAYS
PHP FUNCTIONS
PHP Form Handling
GLOBAL VARIABLESGlobal Variables - Superglobals
SESSIONS
COOKIES
WORKING WITH FILES
OBJECT ORIENTED PHP, etc

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Table of Contents

Chapter 1:PHP INTRODUCTION Chapter 2:VARIABLES Chapter 3: DATA TYPES Chapter 4:OPERATORS Chapter 5:CONTROL STRUCTUERS Chapter 6:ARRAYS Chapter 7:FUNCTIONS Chapter 8:FORMS IN PHP Chapter 9:GLOBAL VARIABLES Chapter 10:SESSIONS Chapter 11:COOKIES Chapter 12:WORKING WITSH FILE Chapter 13:OBJECT ORIENTED PHP

INTRODUCTION

I want to thank you and congratulate you for choosing this book. This book contains elaborate steps, strategies and guidelines on how to create codes using the correct syntax, keywords, and punctuation marks. It also provides tips on how to correctly use arrays, forms, conditional statements, sessions etc. You will also learn how to open, read, write, and close files in PHP. There are sample programs(examples) that can serve as your guidelines when writing your code. This book also contains useful information about PHP, including their features.

I hope it will be of help to you!

By www.computingtutorial.com This document is oriented towards providing exact and reliable information in regards to the topic and chapters covered. It is not legal in any way to reproduce, duplicate, or transmit any part of this document in either electronic means or in printed format. Recording of this publication is strictly prohibited and any storage of this document is not allowed unless with permission from the author. The information provided herein is stated to be truthful and consistent, in that any liability, in terms of inattention or otherwise, by any usage or abuse of any policies, processes, or directions contained within is the solitary responsibility of the recipient reader. Under no circumstances will any blame be held against the author for any damages, or monetary loss due to the information herein, either directly or indirectly. Respective authors own all copyrights not held by the publisher.

The information herein is offered for informational purposes only, and is universal as so. The presentation of the information is without contract or any type of guarantee assurance. . All rights reserved (2015)

Chapter 1:PHP INTRODUCTION

Requirement

Before you proceed to study php, it is recommended that you have a basic understanding of the following: .CSS HTML

What is PHP

PHP is an acronym for Hypertext Preprocessor .PHP is a HTML embedded scripting language PHP scripts are executed on the server PHP files have extension ".php"

What PHP can do

It is also helpful to think of PHP in terms of what it can do for you. . . .

Create a customized user experience for visitors based on information that you have gathered from them. can generate dynamic page content can collect form data can send and receive cookies can add, delete, modify data in your databases can create, open, read, write, and close files on the server can encrypt data

Why choose PHP

PHP runs on various operating system platforms (Windows, Unix, etc.) PHP is easy to learn and runs efficiently on the server side PHP is compatible with almost all servers used today (Apache,etc.) PHP supports a wide range of databases PHP is freely available

PHP Syntax

A PHP script starts with

Comments in PHP

A comment in PHP code is a line that is not executed as part of the program. Its purpose is to be read by someone who is editing the code. PHP supports three forms or ways of expressing a comment Comments are useful for: To remind yourself what you did - Most programmers have experienced coming back to their Comments,this remind you of what you were thinking when you wrote the code To let others understand what you are doing - Comments let other programmers understand each of your steps // This is a single line comment # This is also a single line comment /* This is a multiple lines comment block that spans over more than one line */

Case sensitivity in PHP

In PHP, all variables are case-sensitive. In the next chapter is a detailed discussion of the variables In the example below, only the first statement will display the value of the $pet variable (because $pet, $PeT, and $PET are treated as three totally different variables): Example

White spaces

With HTML, whitespace is ignored between PHP statements. This is to mean that there can be one line of PHP code, then 2 or more lines of blank space before the next line of PHP code.

Because of this you can indent your code and the PHP interpreter will ignore those spaces as well. Here is an elaborate example

Chapter 2:PHP VARIABLES

Variable defination

A variable is a means of storing a value, such as text string "Hello World!" or the integer value 30. A variable can then be reused throughout your code, instead of having to type out the actual value over and over again,in other words variables can be termed as "containers" for storing information In PHP you define a variable with the following form: $variable_name = Value; just Like in mathematics r=1 s=2 t=r+s the letters r,s hold the numbers 1,2 respectively. From the expression t=r+s above, we can calculate the value of r to be 3. In PHP these letters are called variables. Example

Conventions for assigning variables

Variables with more than one word should be separated with underscores. $my_variable A variable starts with the $ sign, followed by the name of the variable Variable names are case sensitive ($r and $R are two different variables) A variable name cannot start with a number A variable name must start with a letter or the underscore character A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )

Chapter 3: PHP DATA TYPES

PHP Data Types

String, Integer, Floating point numbers, Boolean, Array.

String

A string is a sequence of characters, like "Hello world!". A string can be any text inside quotes. You can use single or double quotes,either will work efficiently Example

Integers

An integer is a number without decimals. Rules for integers: An integer must have at least one digit (0-9) An integer cannot contain comma or blanks An integer must not have a decimal point An integer can be either positive or negative Integers can be specified in three formats: decimal (10-based), hexadecimal (16-based - prefixed with 0x) or octal (8-based - prefixed with 0) In the following example we will test different numbers.

The PHP var_dump() function returns the data type and value of variables: Example

Floating point numbers

A floating point number is a number with a decimal point or a number in exponential form. In the following example we will test different numbers. The PHP var_dump() function returns the data type and value of variables: Example

Booleans

Booleans can be either TRUE or FALSE. var x=true; var y=false; Booleans are often used in conditional testing. You will learn more about conditional testing in a later chapter of this tutorial.

Arrays

An array stores multiple values in one single variable.

In the following example we create an array, and then use the PHP var_dump() function to return the data type and value of the array: Example

Chapter 4:PHP O PERATORS

PHP Operators

This chapter shows the different operators that can be used in PHP scripts.

PHP arithmetic operators

1. Addition or summation (+) $x + $y Sum of $x and $y 2. Subtraction (-) $x - $y Difference of $x and $y 3. Multiplication (*) $x * $y Product of $x and $y 4. Division (/) $x / $y Quotient of $x and $y 5.

Modulus (%) $x % $y Remainder of $x divided by $y The example below shows the different results of using the different arithmetic operators: Example

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