PHP for All: A Step-by-Step Guide to Programming PHP

Learn PHP syntax through three basic rules: end statements with a semicolon, prefix every variable with a dollar sign, and ignore whitespace and indentation.

Explore how PHP uses logical operators like and, or, not, and xor to guide program decisions, with practical examples that illustrate true and false outcomes.

Demonstrates multi-line statements in PHP, showing how to split long lines across code, noting the limitations of backslashes and using newline for alignment, with operators and underscores.

Learn the differences between PHP's echo and print, including usage, return values, and basic examples, and get introduced to creating your own functions in PHP.

Learn how to define and call functions in PHP using the function keyword, a function name, and parameter lists. Practice passing arguments, returning values, and displaying results with echo.

Explore conditionals in PHP and how they drive control flow to let programs make decisions, covering the statement, the switch statement, and unary operator.

Learn how to use if, else if, and else in PHP to handle multiple conditions, validate ages, and output messages based on existence and age thresholds.

Explore PHP for all learners by defining functions, returning single or multiple values, passing parameters, and echoing results, including mood-based and array-based returns.