Category: 13. Advanced

Prior to version 7, PHP parser used to report errors in response to various conditions. Each error used to be of a certain predefined type. PHP7 has changed the mechanism of error reporting. Instead of traditional error reporting, most errors are now reported by throwing error exceptions. The exception handling mechanism in PHP is similar…

Standard distributions of PHP have the JSON support enabled by default. The PHP extension implements the JavaScript Object Notation (JSON) data interchange format. The JSON extension in PHP parser handles the JSON data. JSON (JavaScript Object Notation) is a lightweight, text-based, language-independent data interchange format. JSON defines a small set of formatting rules for the…

It is important that the input data received in the form of client request is validated before processing in a PHP application. To perform input validation, the filter extension in PHP provides a number of filter functions, backed up by predefined filter constants and flags. The filter extension of PHP library also helps in sanitizing…

In the theory of software engineering, the term “Design patterns” generally refers to a reusable solution that can be used as a template for developing applications to address commonly occurring problems. You can consider the software design patterns as formalized best practices when developing software solutions. Most of the standard design patterns can be very…

PHP is by far the most popular server-side programming language for web application development, with nearly 75% of websites using PHP either in its core form or one of the PHP frameworks available. To make a choice between using “core PHP” or frameworks for web development, we need to understand the pros and cons of…

The PHP ecosystem has a number of web frameworks. Some of the popular PHP web frameworks are Laravel, Yii, CakePHP etc. While one can build a web application with the help of core PHP, developers are increasingly preferring web frameworks for rapid application development. What are Software Frameworks? In computer programming, a software framework is a collection…

PERL is a dynamically typed, high level and general-purpose programming language. It is normally believed that PERL is an acronym for Practical Extraction and Reporting Language. PHP on the other hand is also a general-purpose scripting language. Initially PHP used to be a short for Personal Home Page’, but these days it has now been…

If you have a prior knowledge of C programming, learning PHP becomes a lot easier, especially the basics. Although PHP is a lot like C, it is bundled with a whole lot of Web-specific libraries, with everything hooked up directly to your favorite Web server. The simplest way to think of PHP is as interpreted…

A bug in a PHP code refers to an error in the program that leads to unexpected results or crash. A systematic approach towards the process of finding bugs before users do is called debugging. In this chapter, some important tips to trace bugs in a PHP code are given. Programs rarely work correctly the…

In PHP, the keywords try, catch, throw and finally are provided to deal with exceptions. Whereas an Error is an unexpected program result, which cannot be handled by the program itself and the program has to be terminated with die() or setting a custom error handler. On the other hand, an exception refers to an unexpected situation which can…