PHP is an acronym for "PHP: Hypertext Preprocessor" PHP is a widely-used, open source scripting language PHP scripts are executed on the server PHP is free to download and use.
Get certified with international certifications which are valuable around the globe. By earning these certifications you can increase the credibility of your skill.
In this course, you'll explore the basic structure of a web application, and how a web browser interacts with a web server. You'll be introduced to the request/response cycle, including GET/POST/Redirect. You'll also gain an introductory understanding of Hypertext Markup Language (HTML), as well as the basic syntax and data structures of the PHP language, variables, logic, iteration, arrays, error handling, and superglobal variables, among other elements. An introduction to Cascading Style Sheets (CSS) will allow you to style markup for webpages. Lastly, you'll gain the skills and knowledge to install and use an integrated PHP/MySQL environment like XAMPP or MAMP.
One of the key features of PHP is its ability to be embedded within HTML. This means that you can mix PHP code with HTML code in the same file, allowing you to create dynamic web pages that can display different content depending on the user's input or other factors. To embed PHP within HTML, you can use the php tags. Any code within these tags will be executed as PHP code by the server.
PHP supports several data types, which are used to store different kinds of values. Here's an overview of the main data types in PHP: Boolean: A Boolean represents a true or false value. In PHP, true and false are case-insensitive keywords that represent the Boolean values. Integer: An integer represents a whole number. In PHP, integers can be specified in decimal, hexadecimal, or octal notation. Float: A float represents a number with a decimal point. In PHP, floats are also known as double-precision numbers. String: A string represents a sequence of characters. In PHP, strings can be enclosed in single quotes (') or double quotes ("). Array: An array represents an ordered collection of values. In PHP, arrays can be indexed numerically or using strings. Object: An object represents an instance of a class. In PHP, objects are created using the new keyword and can contain properties and methods. NULL: NULL is a special data type that represents a variable with no value. Resource: A resource is a special data type that represents an external resource, such as a database connection or file handle. In addition to these basic data types, PHP also supports some more complex data structures, such as multidimensional arrays and objects with inheritance and interfaces.
To define a constant in PHP, you can use the define() function. The define() function takes two arguments: the name of the constant, and its value