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Bases de datos

particularidades de MySQL y PostgreSQL mediante ejemplos y casos prácticos. Conexión y uso de bases de datos en lenguaje PHP ... DATE TIME y TIMESTAMP:.



Learning PHP MySQL & JavaScript

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MERIT Master Thesis

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Beginning PHP and MySQL E-Commerce: From Novice to

This book is a practical step-by-step PHP and MySQL tutorial that teaches you real-world is to mix PHP instructions with HTML because PHP doesn't have



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Database Management System Laboratory

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PHP & MySQL: Novice to Ninja 6th Edition

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Tutorial de SQL

cualquier tipo de base de datos (MS Access SQL Server

Jump Start PHP

Jump Start PHP

byCallumHopkins

Copyright©2013SitePointPty.Ltd.

English Editor:PaulFitzpatrickProduct Manager:SimonMackie Cover Designer:AlexWalkerTechnical Editor:TimothyBoronczyk

Notice of Rights

Notice of Liability

Trademark Notice

thetrademark.

PublishedbySitePointPty.Ltd.

48CambridgeStreetCollingwood

VICAustralia3066

Web:www.sitepoint.com

Email:business@sitepoint.com

ISBN978-0-9874674-0-9(print)

ISBN978-0-9874674-1-6(ebook)

ii

About Callum Hopkins

aroundtheworld.

About SitePoint

development,design,andmore.

About Jump Start

yourown. iii

Toallmyfamilyandfriends,

thankyouforyourcontinued support,andIloveyouall.

Table of Contents

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xi

Who Should Read This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xi

Conventions Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xi

Code Samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xi

Tips, Notes, and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiii

Supplementary Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiii

Do You Want to Keep Learning? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiv Chapter 1Server Kick-Start . . . . . . . . . . . . . . . . . . . . . . . .49

What is PHP? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Setting Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Mac OS X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Linux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

PHP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Hello PHP World . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

PHP Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Preparing Our Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Chapter 2PHP & Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Conditional Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

if Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

else Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

elseif Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

switch Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

for Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

while Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

foreach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Databases, MySQL, and PHP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128

Chapter 3Objects and OOP . . . . . . . . . . . . . . . . . . . . . . . . .41

First Steps in OOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Extending Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Templates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Project Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Chapter 4Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

Form Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

POST and GET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Form Action with PHP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Superglobals and $_REQUEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

Forms and Databases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

Building on our Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128

Chapter 5Sessions and Cookies . . . . . . . . . . . . . . . . . . .89

Cookies: Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

viii

Sessions: Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Session Vs Cookies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Cookies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Sessions and Cookies in PHP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Cookies in PHP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Sessions in PHP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128

Chapter 6PHP and Security . . . . . . . . . . . . . . . . . . . . . . .121

php.ini and Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121

allow_url_include . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

open_basedir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123

Error Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123 Improving Session Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124 Validating Submitted Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128

Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129

ix

Preface

galleriesandawholelotmore. applications.

Who Should Read This Book

Conventions Used

Code Samples

A Perfect Summer"s Day

It was a lovely day for a walk in the park. The birds were singing and the kids were all back at school.

atthetopoftheprogramlisting,likethis: example.css .footer { background-color: #CCC; border-top: 1px solid #333; example.css (excerpt) border-top: 1px solid #333; displayedinbold: function animate() { new_variable = "Hello"; Also, where existing code is required for context, rather than repeat all the code, a ? will be displayed: function animate() { return new_variable; Some lines of code are intended to be entered on one line, but we"ve had to wrap them because of page constraints. A ➥ indicates a line break that exists for formatting purposes only, and should be ignored. ➥testing/?responsive1"); xii

Tips, Notes, and Warnings

Hey, You!

Tipswillgiveyouhelpfullittlepointers.

Ahem, Excuse Me

Thinkofthemasextratidbitsofinformation.

Make Sure You Always ...

...payattentiontotheseimportantpoints.

Watch Out!

Supplementary Materials

http://www.sitepoint.com/books/jsphp11/ https://github.com/spbooks/JSPHP1

Thedownloadablecodearchiveforthisbook.

SitePoint

"sforums,forhelponanytrickywebproblems. books@sitepoint.com lem,orforanyotherreason. xiii

Do You Want to Keep Learning?

xiv

Chapter1

Server Kick-Start

What is PHP?

poweringanestimated78.9%ofallwebsites. systemsbeingthemostpopularchoice.

1http://php.net/

ofdatarelatedtotheirvisitors. offline.

Setting Up

whichcanthenbeaccessedacrosstheInternet.

Jump Start PHP2

freedownload. widthforfiletransfers.

Getting Started

Windows

systemversionandis"PHP5.42.4".

2http://www.wampserver.com/en/

3Server Kick-Start

Which Processor Do I Have?

ternativelyyoucanheadtoControl PanelandselectSystemfromtheoptions available.Right-clickonitandlookfortheoptionSystem Typewhichshouldstate

Visual C++

currentstatusofitsservices: starting. ■ManageyourApacheandMySQLservices ■Switchonline/offline

Jump Start PHP4

■Accessyourlogfiles ■Accessyoursettingsfiles ■Createaliases

Port 80 Problems

Overflow5.

greetedwiththeWAMPhomepage.

5http://stackoverflow.com/a/4705033

5Server Kick-Start

Figure 1.1. The WAMP home page

Mac OS X

usingPHP.

Jump Start PHP6

process.

MAMP Pro

youshouldbewelcomedwiththesplashscreen.

Figure 1.2. The MAMP splash screen

6http://www.mamp.info/en/index.html

7Server Kick-Start

handsideoftheboxtitledApache ServerandMySQL Serverwhichshouldbothhave up,weneedtohittheStart Serversbutton;thedotsshouldswitchtogreen.Shortly afterpressingtheStart Serversbutton,yourdefaultbrowsershouldopenandload theMAMPstartscreen.

Figure 1.3. MAMP start screen

titledPorts. InthiswindowyoushouldseeaninputboxwiththelabelApache Porttotheleft

Jump Start PHP8

Linux sudo apt-get install apache2 asshowninFigure1.4.

9Server Kick-Start

Figure 1.4. Localhost on Linux

sudo apt-get install php5 libapache2-mod-php5* sudo service apache2 restart

Mamun.7

Jump Start PHP10

step-by-steptutorial.

PHP Configuration

codetothefile,andsaveit: 11Server Kick-Start

Figure 1.5. phpinfo()

ThekeythingtofindhereistherowtitledConfiguration File (php.ini) Pathasthis whatitis.

Jump Start PHP12

Hello PHP World

tothedirectorylocatedatC:/Program Files/wamp/www/ > MAMP>htdocstolocateMAMP"swebdirectory. thisfolder.

Choosing a Text Editor

settlingonyourfinalchoice.

10http://stackoverflow.com/a/5891858

13Server Kick-Start

mixtureofbothfreeandpaid-foreditors: optionsandhasabuilt-inFTPclient. mandsbuilt-in. ■Coda14-(MacOSX) ■Notepad++15-(Windows) ■Averypopularfreeeditor. thefile: quotesdbs_dbs29.pdfusesText_35
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