PHP Development

Explore how comments in PHP document code and assist debugging. Learn how server-side comments stay on the server while client-side comments can be seen in the browser.

Learn how variables store temporary values and power dynamic websites using names like $name, assign values with the assignment operator, start with a dollar sign, and observe case sensitivity.

Explore PHP strings as a data type: sequences of characters defined by single or double quotes. Learn escaping with backslashes to include quotes inside strings, and note empty strings.

Explore how double quotes interpret variables and escapes while single quotes print literals, and learn to escape quotes and backslashes to control string output in PHP.

Explore assigning by reference in PHP, showing how two variables can share the same value with ampersand syntax, so incrementing one updates the other and both reflect the change.

Discover how for loops use three parameters separated by semicolons to repeat a block, with a variable, a test like i less than or equal to 5, and an increment.

Explore multidimensional arrays in PHP by building arrays of arrays and using associative keys to access nested elements like sandwich and cereal ingredients.

Explore how PHP uses if and else to test conditions and direct execution. Master switch with break and loops such as while, do-while, and foreach to control flow.

Explore how include and require functions work in PHP, including include, require, and their one-time variants, and how to decide when each is appropriate for reusable page components.

Explore variable scope in PHP, distinguishing page scope, function scope, and global variables. Learn how defining variables before use and using global affect access across included files and functions.

Master PHP superglobal arrays, starting with the server super global and keys, then access file paths and form data via $_GET and $_POST, plus $_COOKIE, $_SESSION, $_REQUEST, and $_ENV.

Build an HTML form in PHP development by creating a doctype, a post method form, fieldset with labels, text input, radio buttons, a comments textarea, and a submit button.

Learn to implement a dynamic header and footer using PHP includes, convert pages to PHP, and modularize the layout with header and footer files from a free css template.

Explore the basics of form handling in PHP development, including form action, method, and get versus post submission, and how PHP scripts process and validate data.

Learn how to check submitted form values in PHP by testing that a value is isset and not empty with conditional statements.

Create a newsletter signup form on a dedicated page with header and footer, including name, email, and gender radio inputs, wired to a PHP handler.

Build a dynamic PHP page that reads form input, validates male or female, and echoes a personalized message, while improving navigation and handling invalid values.

Learn how sticky forms preserve user input after submission errors by replaying values in form fields using PHP, value attributes, and isset checks.