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Master PHP with Adaptive AI.

Master PHP across 30 topics - Foundations, OOP and Web Essentials, and Advanced PHP - guided by Leyaa's adaptive intelligence.

3Parts
30Topics
258Patterns
65hEst. duration
Start Learning Free
PHP
PHP Course
3 - part learning journey
Beginner
Foundations
10 topics · 85 patterns
Beginner
Intermediate
OOP and Web Essentials
9 topics · 83 patterns
Intermediate
Advanced
Advanced PHP
11 topics · 90 patterns
Advanced
Begin Part 1: Foundations
✦ Course Structure

Your PHP Journey in 3 Parts

Each part builds on the last - a deliberate progression from beginner to advanced.

Beginner
Beginner
Part 1: Foundations
Covers PHP Basics and Execution Model, Variables and Data Types, Type Handling and 7 more topics.
10Topics
85Patterns
View topics
Intermediate
Intermediate
Part 2: OOP and Web Essentials
Covers String Functions, Array Functions, Classes and Objects and 6 more topics.
9Topics
83Patterns
View topics
Advanced
Advanced
Part 3: Advanced PHP
Covers Regular Expressions, Namespaces, Autoloading and Composer and 8 more topics.
11Topics
90Patterns
View topics
Curriculum

Everything You'll Learn

Explore every topic and pattern in the course.

PHP

3 parts · 30 topics · 258 patterns
Beginner
Part 1: Foundations10 topics · 85 patterns
Beginner
01
PHP Basics and Execution Model
8 patterns
What is PHP
Why PHP powers most of the web
How PHP executes on the server
PHP Installation and Setup
PHP tags and embedding in HTML
Comments in PHP
First PHP program (Hello World)
PHP CLI vs web server execution
02
Variables and Data Types
10 patterns
Why variables are needed in PHP
Variable declaration with dollar sign
Variable naming rules
PHP dynamic typing behavior
Integer type and behavior
Float type and precision
String type (single vs double quotes)
Boolean type behavior
Null type and its meaning
Type juggling in PHP
03
Type Handling
7 patterns
Why type awareness matters
Gettype and typeof checks
Type casting syntax
Settype for changing types
Loose comparison vs strict comparison
Type coercion in operations
Isset, empty, and is_null behavior
04
Operators
9 patterns
Why operators matter
Arithmetic operators
Comparison operators (loose and strict)
Logical operators
Assignment and compound assignment
String concatenation operator
Spaceship operator
Null coalescing operator
Operator precedence and evaluation
05
Output and String Handling
8 patterns
Why output functions matter
Echo statement
Print statement
Echo vs print behavior
String interpolation in double quotes
Heredoc and nowdoc syntax
Printf and sprintf formatting
Escape sequences in strings
06
Conditional Statements
9 patterns
Why conditional flow is needed
If statement execution flow
If-else execution flow
Elseif ladder execution
Nested conditional execution
Switch statement execution
Match expression (PHP 8)
Ternary operator
Null coalescing in conditions
07
Loops
8 patterns
Why loops are needed
For loop execution model
While loop execution model
Do-while loop execution model
Foreach loop for arrays
Nested loop execution
Break statement with levels
Continue statement with levels
08
Functions
10 patterns
Why functions are needed
Function declaration and calling
Parameters and arguments
Return values
Default parameter values
Type declarations for parameters
Return type declarations
Nullable types in functions
Variable scope in functions
Global keyword behavior
09
Arrays
10 patterns
Why arrays are essential in PHP
Indexed array creation
Associative array creation
Array access and modification
Array count and length
Array push and pop
Array merge and combine
Array search functions
Array sort functions
Multidimensional arrays
10
PHP Request Lifecycle
6 patterns
How a PHP request starts and ends
PHP process model per request
Script execution and memory reset
Why variables do not persist between requests
Why global state is dangerous in PHP
Comparison with long-running servers (Node.js)
Intermediate
Part 2: OOP and Web Essentials9 topics · 83 patterns
Intermediate
01
String Functions
10 patterns
Why string functions matter
String length and counting
Case conversion functions
Trim functions
Substring extraction
String search functions (strpos, strstr)
String replace functions
String split and explode
Implode and join
String comparison functions
02
Array Functions
10 patterns
Why array functions matter
Array map function
Array filter function
Array reduce function
Array walk function
Array slice and splice
Array key and value extraction
Array unique and flip
Array chunk and pad
Compact and extract functions
03
Classes and Objects
10 patterns
Why OOP is needed in PHP
Class declaration syntax
Object instantiation with new
Properties and visibility
Methods and $this keyword
Constructor method
Destructor method
Access modifiers (public, private, protected)
Static properties and methods
Constants in classes
04
Inheritance and Polymorphism
9 patterns
Why inheritance is needed
Extending classes
Method overriding
Parent keyword behavior
Constructor inheritance
Abstract classes and methods
Final classes and methods
Type hinting with parent classes
Instanceof operator
05
Interfaces and Traits
9 patterns
Why interfaces are needed
Interface declaration and implementation
Multiple interface implementation
Interface constants
Why traits are needed
Trait declaration and usage
Multiple trait usage
Trait conflict resolution
Interface vs abstract class vs trait
06
Error and Exception Handling
9 patterns
Why error handling matters
PHP error types and levels
Try-catch execution flow
Multiple catch blocks
Finally block behavior
Throwing exceptions
Custom exception classes
Error vs Exception in PHP
Set_error_handler function
07
File Handling
9 patterns
Why file operations matter
File open modes
Reading files (fread, fgets, file)
Writing files (fwrite, file_put_contents)
File existence and info checks
File pointer manipulation
CSV file reading and writing
JSON encoding and decoding
Directory operations
08
Superglobals and Web Context
8 patterns
Why superglobals exist
$_GET for URL parameters
$_POST for form submissions
$_REQUEST behavior
$_SERVER information
$_FILES for file uploads
Form handling execution flow
Input validation and sanitization
09
Sessions and Cookies
9 patterns
Why state management is needed
How sessions work in PHP
Starting and using sessions
Session variables
Destroying sessions
How cookies work
Setting and reading cookies
Cookie expiration and security
Session vs cookie decision
Advanced
Part 3: Advanced PHP11 topics · 90 patterns
Advanced
01
Regular Expressions
9 patterns
Why regex is needed in PHP
Preg_match for pattern matching
Preg_match_all for global matching
Preg_replace for substitution
Preg_split for splitting
Character classes and quantifiers
Capturing groups and backreferences
Lookahead and lookbehind
Common validation patterns
02
Namespaces
6 patterns
Why namespaces are needed
Namespace declaration syntax
Importing with use keyword
Aliasing with as keyword
Sub-namespaces
Global namespace access
03
Autoloading and Composer
7 patterns
Why autoloading is needed
Manual includes vs autoloading
Composer installation and setup
Composer autoload mechanism
PSR-4 directory mapping
Composer require and dependency management
Common autoloading mistakes
04
Closures and Anonymous Functions
8 patterns
Why closures matter in PHP
Anonymous function syntax
Closures and variable binding with use
Closures as callbacks
Arrow functions (short closures)
Closures in array functions
Binding closures to objects
First-class callable syntax
05
PDO Database Access
10 patterns
Why PDO is the standard
PDO connection setup
Executing queries with query method
Prepared statements and why they matter
Binding parameters
Fetching results (fetch, fetchAll)
Fetch modes and styles
Insert, update, delete operations
Transaction management
Error handling with PDO exceptions
06
PHP Security Fundamentals
9 patterns
Why security is critical in PHP
How SQL injection exploits unsafe queries
Preventing injection with prepared statements
How XSS attacks exploit unescaped output
Output escaping with htmlspecialchars
CSRF attacks and token protection
File upload security risks
Password hashing with password_hash
Input validation vs sanitization
07
Generators and Iterators
8 patterns
Why generators are needed
Yield keyword behavior
Generator function execution model
Yield from delegation
Generator return values
Memory efficiency with generators
Iterator interface implementation
IteratorAggregate interface
08
Modern PHP Features (PHP 8+)
9 patterns
Why modern PHP matters
Named arguments
Union types
Intersection types
Null safe operator
Enums in PHP
Readonly properties
Fibers for concurrency
Constructor promotion
09
Magic Methods
8 patterns
Why magic methods exist
__construct and __destruct
__get and __set for property access
__call and __callStatic
__toString for string representation
__invoke for callable objects
__clone for object copying
__serialize and __unserialize
10
Type System and Safety
8 patterns
Why strict typing matters
Declare strict_types directive
Union types in practice
Intersection types in practice
Never return type
Enum backed values
Readonly classes
DNF types (Disjunctive Normal Form)
11
Design Patterns in PHP
8 patterns
Why design patterns matter
Singleton pattern
Factory pattern
Strategy pattern
Observer pattern
Dependency injection concept
Repository pattern
MVC architecture overview
Why Leyaa

Not just a course. A learning intelligence.

Leyaa doesn't just deliver content - it understands where you are, what you need, and how to get you there fastest.

Adaptive Diagnostics
Adaptive Diagnostics
Leyaa identifies which of the 258 patterns you've mastered and which need work - before you waste time on what you already know.
Pattern-Level Precision
Pattern-Level Precision
Every pattern gets a verdict - Learn, Practice, or Skip - so your study time goes exactly where it counts.
Intelligent Pacing
Intelligent Pacing
Leyaa reads your velocity across the whole course and adapts your focus list dynamically, keeping you in the optimal learning zone.
Before & After Visibility
Before & After Visibility
Every assessment creates a snapshot. Retake anytime to see exactly how much you've grown - topic by topic, pattern by pattern.
Learner Autonomy
Learner Autonomy
Leyaa recommends, never restricts. Override any suggestion and explore at your own pace - the system tracks everything regardless.
Clear Learning Path
Clear Learning Path
Foundations → OOP and Web Essentials → Advanced PHP - a structured journey where each part sets you up perfectly for the next.
PHP

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30 Topics
258 Patterns
Personalized roadmap
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