working with objects using php's built-in OOP capabilities. At the same time OOP is all about creating modular code, so our object oriented PHP code will be. The concept of object-oriented programming may seem daunting. a comprehensive ebook to help you get started with object-oriented PHP. the PDF version. OOP – Learn Object Oriented Thinking OOP – Learn Object Oriented Th.. Download Object Oriented Programming in C++ 4th Edition by.

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Php Oop Ebook

Editorial Reviews. From the Author. This book was written as a learning exercise: at the time of Kindle Store; ›; Kindle eBooks; ›; Computers & Technology. Add Ebook to Cart This is not a beginner's guide to OOP PHP. I've been a developer for over 8 years now, and PHP has almost always. This book acts as a guide to using mature OOP practices in modern PHP to build and Learn more about Leanpub's ebook formats and where to read them.

Stack Overflow: DOMDocument loadHTML does not encode UTF-8 correctly Internationalization i18n and Localization l10n Disclaimer for newcomers: i18n and l10n are numeronyms, a kind of abbreviation where numbers are used to shorten words - in our case, internationalization becomes i18n and localization, l10n. First of all, we need to define those two similar concepts and other related things: Internationalization is when you organize your code so it can be adapted to different languages or regions without refactorings. This action is usually done once - preferably, at the beginning of the project, or else you will probably need some huge changes in the source! Localization happens when you adapt the interface mainly by translating contents, based on the i18n work done before. It usually is done every time a new language or region needs support and is updated when new interface pieces are added, as they need to be available in all supported languages. Pluralization defines the rules required between distinct languages to interoperate strings containing numbers and counters. For instance, in English when you have only one item, it is singular, and anything different from that is called plural; plural in this language is indicated by adding an S after some words, and sometimes changes parts of it. In other languages, such as Russian or Serbian, there are two plural forms in addition to the singular - you may even find languages with a total of four, five or six forms, such as Slovenian, Irish or Arabic. This way is, however, hardly recommended for serious projects, as it poses some maintenance issues along the road - some might appear in the very beginning, such as pluralization.

In PHP, we have a copy keyword which performs a shallow copy by default. We can implement the method to create our custom deep copy.

OOP in PHP and MVC

In PHP all objects are assigned by reference. The next two examples perform a shallow and a deep copy on objects. The Object object will have a reference to the Color object. It passes the instance of the Color object to its constructor. We increment the id, change the red part of the color object, and change the size to "big".

The size is different: "small" vs "big".

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But the red part of the color object is same for both instances: Changing member values of the cloned object did not affect the original object. Changing members of the referenced object has affected the original object too.

In other words, both objects refer to the same color object in memory. To change this behaviour, we will do a deep copy next.

The original object has retained its previous 23 value. PHP exceptions Exceptions are designed to handle the occurrence of exceptions, special conditions that change the normal flow of program execution. Exceptions are raised or thrown and initiated. During the execution of our application, many things might go wrong.

A disk might get full and we cannot save our file. An Internet connection might go down and our application tries to connect to a site. All these might result in a crash of our application. To prevent happening this, we must cope with all possible errors that might occur. For this, we can use the exception handling.

Exceptions are available since PHP 5. Most PHP errors still use the old error reporting and not exceptions.

OOP in PHP and MVC

This leads to an error. The error is not an exception and is not caught by the catch keyword. This exception is later caught by the catch keyword.

To find out more info, we call the getMessage method on the exception object. The Exception is a base class for all exceptions. We can create our own exceptions derived from this base class.

This class derives from the Exception class through the extends keyword. We give the exception a message "Exceeded the maximum value allowed". In other words, each class can only have one constructor defined. There are two ways how we can handle this.

The second solution uses a factory pattern. We instantiate the class with 2 and 3 parameters. Their initial value is "not specified". So the idea is: the code inside the constructor is dynamic; it depends on the arguments passed to it. This is done by the above code line. The first takes 2 parameters, the second takes 3. Create objects folder.

Create category. Add the following code inside our category. Open objects folder. Create product. When you fill out the form and clicked the "Create" button. Changes in the database. This file will show the main page of our web app. Put the following code inside it. This button, when clicked, will let us go back to the records list. Replace the "contents will be here" comments in the previous section with the following code.

Put the following code before the "set page header" comment of section 6. Put the following code inside our "product. An HTML table will hold our data. Put the following code after the section 6. Inside the "while" loop of the previous section, there is a comment "read one, edit and delete button will be here", replace that with the following code.

Create a new file and name it "paging. This will be used for pagination. Open your product.

Add the following method in the class. Put the following code after the closing "table" tag of section 6.

List of records, page 1. List of records, page 2. Please take a break or drink some coffee first! Replace the previous section's "contents will be here" comments with the following code. The following code will retrieve data that will populate our HTML form.

PHP Object-Oriented Solutions

This is important because this will let the user know what exactly the record he is updating. Now we can put the latest values to each form elements. This is to pre-select the option of the current record. Replace the previouse section's comments "categories select drop-down will be here" with the following code.

Once assigned, it will update the database with those values using the update method. Open our "product. The update record form should look like the following.

When you submit the form, a message will be shown. A record was changed in the database. Put the following code before the "set page headers" comments of the previous section.

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