OBJECTORIENTED PHP CONCEPTS TECHNIQUES AND CODE PDF DOWNLOAD

protected $message; protected $code; protected $file; protected $line; private $string; private $trace; public function __construct$message = null, $code = 0; public function __toString;[r]

The downside to having a large website with numerous pages is that it can be difficult for casual web surfers to find what they’re looking for. For this reason I will also show you how to create a site-specific search. I’ll do this using the Google Application Programming Interface (API) and<[r]

no intrinsic need for this method to be magic. For example, in Java, construc- tors bear the name of the class with no serious negative consequences. On the other hand, destructors are a necessity and would seem to have to be magic. They are not invoked by any action of the developer, but[r]

The SimpleXML extension excels in circumstances such as this where the file structure is known beforehand. We know we are dealing with an RSS file, and we know that if the file is well-formed it must contain certain elements. On the other hand, if we don’t know the file format we’re dealin[r]

Next, you need an error code number that is greater than or equal to 5,000 (that is, outside the range used by MySQL). Then define a constant class value using the keyword const and give this constant a name using uppercase letters (per convention). The const keyword performs t[r]

9
D A T A B A S E C L A S S E S
The last chapter ended by saying we would create a database class in order to test the versatility of the page navigator. That’s what we’re going to do in this chapter. I noted earlier that it’s sometimes difficult to identify objects, because often what’s[r]

Changing a player originally added to the $rovers has no effect on the player array in the cloned $reserves object. This is the result you want. The magic clone method allows you to define what happens when an object is cloned. Using the terminology of other OO languages, the __clone me[r]

Con ve rsion T a bl e: P HP 4 an d PHP 5 171
Operators
function foo($variable) function foo(&$variable) Note that this example shows a function declaration, not a function call. Passing objects by reference explicitly is recommended in PHP 4, but not required in PHP[r]

Using PHP
P ART I
118
This chapter explains how reusing code leads to more consistent, reliable, maintainable code, with less effort. We will demonstrate techniques for modularizing and reusing code, beginning with the simple use of require() and[r]

Whenever possible, I use games as example programs. Each chapter begins by demonstrating a simple game or diversion. I show you all the skills you need to write that game through a series of simple example programs. At the end of the chapter I show the game again, this time by looking at the code[r]

_See SPL_ Standardized General Markup _Lan-guage SGML.. _See UDF _ _user programmer.[r]

_USING METADATA_ The utility methods that make use of metadata are found in Listing 15-9: /** Return clean posted data - check variable names same as field names */ public function clean[r]

This speculation may make the best sense of how this method ought to work, but it doesn’t describe what actually happens. In fact, this method only ever returns the first column and any number of rows. If the second argument is false, then an array is returned; if the second argument is tr[r]

You need to retrieve the value of the private variable mimetype when you display your thumbnail. Merely retrieving the MIME type can do no harm, but the same cannot be said of setting this value. The MIME type is set in the constructor by looking at an image’s properties. Since this information[r]

For the uninitiated, this guide to the latest version of PHP offers a speedy introduction to object-oriented programming, including a thorough explanantion of class as well as coverage of constructors, destructors, inheritance, polymorphism and interfaces. In this easy to follow g[r]

2 Ch a pt er 1
Do We Really Need Objects?
The ability of any server-side scripting language to “include” files within a web page reduces initial work and ongoing maintenance. For instance, suppose a website contains a menu at the top of each web page, and this menu is iden- tica[r]

In short, this book: Brings together information from a variety of sources for a comprehen-sive overview of OO PHP Explains OO concepts through concrete examples, not in the abstract Tak[r]

I’ve already mentioned the quote , setAttribute , and query methods of the PDO class. For databases such as SQLite that support transactions, this class also has methods to begin, commit, or roll back transactions.
The most important method, however, is prepare . This method is simi[r]

We’ve covered some of the backward compatibility issues as they relate to OOP. Almost all procedural code will run with no changes under PHP 5. No rewrites are required, and code does not need to be converted to an OO style. Upgrading existing applications to take advan[r]

For ease of placement on the screen, images in a group are usually reduced to approximately the same thumbnail size as each other. In other words, the thumbnail for a large image is roughly the same size as the thumbnail for a medium-sized image. The image is typically reduced to a predetermined[r]