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PHP 7 Programming Cookbook

PHP 7 Programming Cookbook

By : Bierer
4.1 (8)
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PHP 7 Programming Cookbook

PHP 7 Programming Cookbook

4.1 (8)
By: Bierer

Overview of this book

PHP 7 comes with a myriad of new features and great tools to optimize your code and make your code perform faster than in previous versions. Most importantly, it allows you to maintain high traffic on your websites with low-cost hardware and servers through a multithreading web server. This book demonstrates intermediate to advanced PHP techniques with a focus on PHP 7. Each recipe is designed to solve practical, real-world problems faced by PHP developers like yourself every day. We also cover new ways of writing PHP code made possible only in version 7. In addition, we discuss backward-compatibility breaks and give you plenty of guidance on when and where PHP 5 code needs to be changed to produce the correct results when running under PHP 7. This book also incorporates the latest PHP 7.x features. By the end of the book, you will be equipped with the tools and skills required to deliver efficient applications for your websites and enterprises.
Table of Contents (16 chapters)
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15
Index

Creating a generic form element generator

It's pretty easy to create a function that simply outputs a form input tag such as <input type="text" name="whatever" >. In order to make a form generator generically useful, however, we need to think about the bigger picture. Here are some other considerations over and above the basic input tag:

  • The form input tag and its associated HTML attributes
  • A label that tells the user what information they are entering
  • The ability to display entry errors following validation (more on that later!)
  • Some sort of wrapper, such as a <div> tag, or an HTML table <td> tag

How to do it...

  1. First, we define a Application\Form\Generic class. This will also later serve as a base class for specialized form elements:
    namespace Application\Form;
    
    class Generic
    {
      // some code ...
    }
  2. Next, we define some class constants, which will be generally useful in form element generation.
  3. The first three will become keys associated with the major...
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PHP 7 Programming Cookbook
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