links - php-howtos

arrays

• Arrays - PHP in a Nutshell http://hudzilla.org/phpbook/read.php/5_0_0 "Some types of data naturally group together - colours, for example, naturally clump together into one group. Rather than having hundreds of separate variables - one for each colour - the reality is that it makes more sense to have one variable that holds a list, or array of colours." Paul Hudson : 2006
• PHP 101 - Arrays http://devzone.zend.com/node/view/id/635 very clear examples Vikram Vaswani : 2004
• Using Arrays in php http://www.samspublishing.com/articles/article.asp?p=31840&seqNum=1&rl=1 Introduction to arrays, how to use them, functions that work with arrays. (Sample chapter from PHP and MySQL Web Development, 2nd Edition) Laura Thompson : 2005

debugging

• Class: PHP Debug http://www.phpclasses.org/browse/package/1479.html trace the execution steps of PHP scripts to assist in their eventual debugging. The class can keep track of messages associated with different types of script activity so it can later generate a report that can be outputted for instance at the end of each script pages. Vernet Loic : no date
• JavaScript Powered PHP Debugging http://www.zend.com/zend/tut/tutorial-DebugLib.php Write debug messages to a javascript window, thereby not "interrupting your site layout. You will learn to apply basic string substitution, and briefly examine a method of capturing data on PHP’s STDOUT via output buffering." Craig Davis : 2003
• PHP debug class http://phpdebug.sourceforge.net/ "... to provide assistance in debugging PHP code, by "debug" i don't mean "step by step debug" but program trace, variables display, process time, included files, queries executed... These informations are gathered through the script execution and therefore are displayed at the end of the script so that it can be read and used at any moment. (during the development phase or using a special account in production)" Vernet Loic : Apr 2006

documenting

• CCDoc http://ccdoc.sourceforge.net/ "a free javadoc inspired tool that automatically generates HTML web documentation from C++ programs by parsing the source file headers." Joe Linoff : Sep 2004
• PHPDoc http://www.phpdoc.de/ "a way to generate an API documentation of objectoriented and procedural code with certain markup in your source." Ulf Wendel : 2001

images

• Generating Images on the Fly http://www.webmonkey.com/webmonkey/01/21/index4a.html "The HTML on the page has the usual IMG tag, but the file it points to is a script rather than a static image file. The script, when called, generates and returns an image according to the arguments it's fed." Also how to use GIMP and Generator to make images with php. (From 2001, so possibly needs a look at current function documentation when using.) Paul Adams : 2001
• Image manipulation with PHP & the GD library, Part 1 http://www.phpit.net/article/image-manipulation-php-gd-part1/ "How to open images, display or save them, and how to write a simple image converter" PHP IT : 2006

login

• Password Hashing http://phpsec.org/articles/2005/password-hashing.html "Password hashing is a way of encrypting a password before it is stored [in your database]" James Mcglinn : 2005

oop

• Object-Oriented PHP for Beginners   http://net.tutsplus.com/tutorials/php/object-oriented-php-for-beginners/ "Learn the concepts behind object-oriented programming (OOP), a style of coding in which related actions are grouped into classes to aid in creating more-compact, effective code." Jason Lengstorf : July 2010

recursion

• Fundamentals of Recursion in PHP http://www.devshed.com/c/a/PHP/Fundamentals-of-Recursion-in-PHP/ "Recursion ... can be defined as a regular function that calls itself. ... This article, the first of three parts, will explain recursive functions and help you see why they are useful." Good examples; makes sense. Devshed : 2006
• Recursion http://www.igrep.com/search.php?searchphrase=recursion search for recursion on devshed Devshed : 2006

regex

• Parsing HTML - it's just hard to do! http://www.codinghorror.com/blog/archives/001311.html "You can't parse [X]HTML with regex. Because HTML can't be parsed by regex. Regex is not a tool that can be used to correctly parse HTML. ..." Jeff Atwood : 2009

sessions

• "Headers already sent" http://www.phpfreaks.com/forums/index.php/topic,95562.0.html Clear explanation of that pesky error message PHPFreaks : 2006
• Cookies and Sessions - PHP in a Nutshell http://hudzilla.org/phpbook/read.php/10_0_0 "Owing to the fact that HTTP is stateless - that is, any data you have stored is forgotten about when the page has been sent to the client and the connection is closed - it took a little work to find a solution to the problem. Eventually, Netscape put a solution into their browser known as "cookies" - tiny bits of information that a web site could store on the client's machine that were sent back to the web site each time a new page was requested. Each cookie could only be read by the web site that had written it, meaning that it was a secure way to store information across pages." ... "Sessions grew up from cookies as a way of storing data on the server side, ... In order to set up a unique identifier on the client, sessions still use a small cookie - this cookie simply holds a value that uniquely identifies the client to the server, and corresponds to a data file on the server." Paul Hudson : 2006
• Introduction to Maintaining State with PHP Sessions http://www.devshed.com/c/a/PHP/Introduction-to-Maintaining-the-State-of-Applicat ions-with-PHP-Sessions/ good discussion DevShed : Apr 2006
• Session Handling Functions http://www.php.net/manual/en/ref.session.php The manual: the authoritative word on php session functions; with comments. PHP.Net : 2005
• Sessions at free2code http://www.free2code.net/tutorials/programming/php/4/sessions.php very good explanation Free2Code : 2005

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