php_reference_-_beginner_to_intermediate_php5.pdf

PHP Reference: Beginner to Intermediate PHP5

PHP Reference: Beginner to

Intermediate PHP5

Mario Lurig

PHP Reference:

2008

Beginner to Intermediate PHP5

ISBN: 978-1-4357-1590-5

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FIRST EDITION

http://www.phpreferencebook.com

Cover art credit (PHP REFERENCE:), included with permission:

Leo Reynolds ( www.flickr.com/lwr/ ) - 7 images

Patrick Goor ( www.labworks.eu ) - 3 images

Eva the Weaver ( www.flickr.com/evaekeblad/ ) - 2 images

Duncan Cumming ( www.flickr.com/duncan/ ) - 1 image

PHP Reference: Beginner to Intermediate PHP5

Contents

Preface .

Miscellaneous Things You Should Know .

Operators

Control Structures .

Global Variables

Variable Functions .

String Functions

Array Functions

Date/Time Functions .

103

Mathematical Functions

111

MySQL Functions

115

Directory & File System Functions .

127

Output Control (Output Buffer)

139

Sessions

145

Regular Expressions .

149

Common Language Index .

159

Function Index .

161

Mario Lurig

PHP Reference: Beginner to Intermediate PHP5

Preface

I taught myself PHP and MySQL and found myself, at times,

without internet access and thus without search access to the PHP.net

manual ( http://www.php.net/manual/en/ ). Since coding was not my

primary job, I needed a refresher on syntax, usage, and most of all, a

reminder of how to code PHP without spending an hour debugging a silly

mistake. I printed out reference sheets, cards, cheat sheets and tried to work

off of them exclusively. However, I still found myself needing more than

would fit on one page of 8.5" x 11" paper front and back. So, off I went to the

web and the local bookstore. After spending some time with a few books,

giving them a trial run, I ran into two major problems:

1. I spent most of the time weeding through extensive tutorials to find

the keyword and answer I was looking for, sometimes fruitlessly.

2. Information was biased or surrounded by irrelevant and often

confusing code that did little to explain the what of the function.

I figured I couldn't be the only one with this problem, and quickly

found out that I wasn't alone thanks to a chance run-in at a local bookstore.

Casual PHP programmers, sometimes away from the internet, wanting a

quick reference book that assumes they have some experience with PHP and

understood the basics while still needing a little clarification sometimes on

the details. Therefore, this book was born.

For this edition, I decided to eliminate some of the more advanced

aspects of PHP programming: object oriented programming, image

manipulation/creation, secondary modules, and a few others. Secondarily,

items such as mail handling, file manipulation, regular expressions, MySQL,

sessions, and cookies were balanced for complexity and usability, usually

excluding the more advanced uses, such as streams . Finally, this book is not

an exhaustive collection of every PHP function, but a majority selection of

those appropriate for beginner to intermediate programmers. The most

common or effective functions are included and some aliases are left out to

reduce confusion, such as including is_int() and not is_long().

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