Contents
Intro
Using PHP
Embedding PHP
Outputting Text
Installing Web Server
Hello World
Compile & Parse
Comments
Variables
Defining Variables
Data Types
Integer Type
Floating-Point Type
Bool Type
Null Type
Default Values
Operators
Arithmetic Operators
Assignment Operators
Combined Assignment Operators
Increment & Decrement Operators
Comparison Operators
Logical Operators
Bitwise Operators
Operator Precedence
Additional Logical Operators
String
String Concatenation
Delimiting Strings
Heredoc Strings
Nowdoc Strings
Escape Characters
Character Reference
String Compare
String Functions
Arrays
Numeric Arrays
Associative Arrays
Mixed Arrays
Multi-dimensional Arrays
Conditionals
if
switch
Alternative Syntax
Mixed Modes
Ternary Operator
Match Expression
Loops
while
do-while
for
foreach
Alternative Syntax
break
continue
goto
Functions
Defining Functions
Calling Functions
Function Parameters
Optional Parameters
Named Arguments
Variable Parameter Lists
Return Statement
Scope & Lifetime
Anonymous Functions
Closures
Arrow Functions
Generators
Built-in Functions
Class
Instantiating Object
Accessing Object Members
Initial Property Values
Constructor
Destructor
Case Sensitivity
Object Comparison
Anonymous Classes
Closure Object
Inheritance
Overriding Members
final Keyword
instanceof Operator
Access Levels
Private Access
Protected Access
Public Access
var Keyword
Object Access
Access Level Guideline
Accessors
Static
Referencing Static Members
Static Variables
Late Static Bindings
Constants
const
define
const & define
Constant Guideline
Magic Constants
Interface
Interface Signatures
Interface Example
Interface Usages
Interface Guideline
Abstract
Abstract Methods
Abstract Example
Abstract Classes & Interfaces
Abstract Guideline
Traits
Inheritance & Traits
Trait Guidelines
Importing Files
Include Path
require
include_once
require_once
return
_autoload
Type Declarations
Argument Type Declarations
Return Type Declarations
Strict Typing
Nullable Types
Union Types
Property Type Declarations
Type Conversions
Explicit Casts
settype
gettype
Variable Testing
isset
Empty
is_null
unset
Null Coalescing Operator
Nullsafe Operator
Determining Types
Variable Information
Overloading
Property Overloading
Method Overloading
isset & unset Overloading
Magic Methods
_toString
_invoke
Object Serialization
_sleep
_wakeup
Set State
Object Cloning
User Input
HTML Form
Sending with POST
Sending with GET
Request Array
Security Concerns
Submitting Arrays
File Uploading
Superglobals
Cookies
Creating Cookies
Cookie Array
Deleting Cookies
Sessions
Starting Session
Session Array
Deleting Session
Sessions & Cookies
Namespaces
Creating Namespaces
Nested Namespaces
Alternative Syntax
Referencing Namespaces
Namespace Aliases
Namespace Keyword
Namespace Guideline
References
Assign by Reference
Pass by Reference
Return by Reference
Advanced Variables
Curly Syntax
Variable Variable Names
Variable Function Names
Variable Class Names
Error Handling
Correcting Errors
Error Levels
Error-handling Environment
Custom Error Handlers
Raising Errors
Exception Handling
Try-Catch
Throwing Exceptions
Catch Block
Finally Block
Rethrowing Exceptions
Uncaught Exception Handler
Errors & Exceptions
Assertions
Index