In this programming tutorial you will learn how to use the PHP array function array_change_key_case to manipulate data stored in your arrays.

In this programming tutorial you will learn how to work with the PHP array_combine function, which allows you to combine arrays into a single array.

In this programming tutorial, you will learn how to work with the PHP array_chunk function.

In this second part of a two-part tutorial, you’ll learn how to use closures in the development of an extendable template system. This system can be customized at will without struggling too much, thanks to the number of interfaces that it implements.

In this first part of a two-part tutorial, I develop a basic template system that can parse any type of closure assigned as a property of its view object(s).

In this conclusion to an eight-part article series on working with a computer’s file and operating system with PHP, you’ll learn about the functions used in combination with a PHP script to execute system-level programs. This article is excerpted from chapter 10 of the book Beginning PHP and PostgreSQL 8: From Novice to Professional, written by W. Jason Gilmore and Robert H. Treat (Apress; ISBN: 1590595475).

In this first part of a two-part tutorial, I use a somewhat contrived example to show why you should avoid coding static helper classes in PHP.

In this two-part tutorial, I show why the use of static helper classes can be detrimental to building robust and scalable object-oriented applications in PHP (though you should take into account that the concept is language agnostic). I also implement a set of instantiable, fine-grained validators, which can be easily tested in isolation, injected into the internals of other objects, and so forth.

In this seventh part of an eight-part article series on using PHP commands with your file and operating systems, you’ll learn how and why to sanitize user input. This article is excerpted from chapter 10 of the book Beginning PHP and PostgreSQL 8: From Novice to Professional, written by W. Jason Gilmore and Robert H. Treat (Apress; ISBN: 1590595475).

In this sixth part of an eight-part series on working with the file and operating systems of a computer with PHP, you’ll learn how to use PHP to write to a file and how to execute shell commands. This article is excerpted from chapter 10 of the book Beginning PHP and PostgreSQL 8: From Novice to Professional, written by W. Jason Gilmore and Robert H. Treat (Apress; ISBN: 1590595475).

In this fifth part of an eight-part series on working with file and operating systems with PHP, you’ll learn how to read data from a file and move the file pointer. This article is excerpted from chapter 10 of the book Beginning PHP and PostgreSQL 8: From Novice to Professional, written by W. Jason Gilmore and Robert H. Treat (Apress; ISBN: 1590595475).