Object-Oriented PHP: Concepts, Techniques, and Code by Peter Lavin

By Peter Lavin

I've got used Hypertext Preprocessor procedurally for a number of years, and had a few inkling of OOP, yet no formal advent but. i used to be proud of the 3 introductory chapters laying the foundation for the physique of the e-book. i used to be additionally capable of enforce the periods built as examples during this booklet with a few added/modified tools. the writer is a hugely proficient programmer and offers the reader an perception into his use and improvement of significant periods. The again hide offers this attempt as an advent to item orientated Programming, and reasonable sufficient, the suggestions are transparent. The precis additionally provides this as an 'easy to persist with' consultant to OO Hypertext Preprocessor. now not. it's something to take a seat on your recliner and skim textual content and say, "Uh huh. obtained it" and really one other to truly know how to construct the examples and enforce them in order that some time isn't wasted.

It is feasible to exploit this booklet to benefit OO personal home page, yet simply with nice willingness to go looking all over for aiding documentation to goods mysteriously brought with out rationalization. I heavily doubt any reviewer that rated this attempt hugely, stepped throughout the code line via line, bankruptcy via bankruptcy, getting into their very own programming notes into their code and figuring out every one step.

For me, the time required to investigate all the goods brought in every one bankruptcy to the purpose of realizing the 'why' of every step used to be over the top. a selected instance of an merchandise being brought with no right rationalization is the creation of the 'Iterator' interface in bankruptcy 10. there is not any point out that interfaces are a part of the traditional Hypertext Preprocessor Library (SPL), or that the Iterator features are indexed there. at the least, within the context of the bankruptcy, that's the way it learn to me. No clarification of the way we all know the behaviors or houses. i discovered myself digging into PHP's C/C++ resource code to appreciate matters glossed over within the textual content of the ebook. additional studying on the finish of Ch. eleven, nearly chapters later, then referenced the truth that Iterator used to be a integrated functionality and the place to discover the data. a bit deeper digging finds that during truth, reference was once made in a single of the introductory chapters, ch. three, p.14. The 'we will not care for the main points right here, however the obtain documents have the right kind code' or the data is in different places doesn't look reader pleasant. this is often the default strategy during this e-book, making it difficult to extract the information in a significant, time potent approach.

I bet i've got turn into spoiled to the books written by means of writer Larry Ullman and carry different tutorial texts to that ordinary. If Ullman introduces an idea, he covers the main points and has each line of code truly within the textual content of the publication. the method of truly together with the code, not only spotlight snippets, obviously factors a extra thorough concept procedure at the a part of the writer and leads to transparent, simply understood reasons instead of opaque references to behaviors and definitions that the reader needs to search out.

It is excellent accomplishment simply to write a e-book, and i'm thankful to all authors and this one particularly for sharing his wisdom. the fashion of examining required, i.e. analyzing pseudo 'back to entrance' in a variety of sections was once a bit disconcerting. My view is if you recognize item orientated Programming and doubtless already be aware of Hypertext Preprocessor OOP and feature an intensive wisdom of the SPL, it is a nice source. i think if this e-book have been re-packaged in order that expectancies for the content material have been diversified, it'd be a 5-star ebook. the information received from stepping via comes in handy and lasting, and costly time-wise.

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The ugly duckling class is well on its way to becoming a full-fledged swan. The DirectoryItems class was created in order to display a directory of images. Further changes are needed to perform this task properly but these changes require the creation of additional classes. In Chapter 6 let’s look at creating a thumbnail image class to produce thumbnails of images. book Page 35 Friday, May 5, 2006 2:25 PM 6 THE THUMBNAILIMAGE CLASS Images are often of unequal dimensions, and their file sizes can vary greatly.

At this point, Java, the most popular OO language to date, had already been around for almost 10 years. Why did it take PHP so long to become a full-fledged OO language? The short answer is because PHP is principally a web development language and the pressures of web development have only recently pushed it in this direction. com/webdev/ Article/10007/0/page/1. fm Page 12 Tuesday, May 16, 2006 9:35 AM Support for objects has been grafted onto the language—you can choose to use objects or simply revert to procedural programming.

In another example, the get_parent_class, get_class, and get_class_methods functions now return a casesensitive result (though they don’t require a case-sensitive parameter), so if you are using the returned result in a case-sensitive comparison you will have to make changes. Pass By Reference The preceding examples of changes are relatively minor and fairly easy to detect and upgrade. However, there is one change in particular that is of an entirely different magnitude. The major change to PHP in version 5 relating to OOP is usually summed up by saying that objects are now passed by reference.

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