PHP 8 Quick Scripting Reference: A Pocket Guide to PHP Web Scripting. 3 Ed

About the Author
About the Technical Reviewer
Introduction

Chapter 1: Using PHP

• Embedding PHP
• Outputting Text
• Installing a Web Server
• Hello World
• Compile and Parse
• Comments

Chapter 2: Variables

• Defining Variables
• Data Types
• Integer Type
• Floating-Point Type
• Bool Type
• Null Type
• Default Values

Chapter 3: Operators

• Arithmetic Operators
• Assignment Operators
• Combined Assignment Operators
• Increment and Decrement Operators
• Comparison Operators
• Logical Operators
• Bitwise Operators
• Operator Precedence
• Additional Logical Operators

Chapter 4: String

• String Concatenation
• Delimiting Strings
• Heredoc Strings
• Nowdoc Strings
• Escape Characters
• Character Reference
• String Compare
• String Functions

Chapter 5: Arrays

• Numeric Arrays
• Associative Arrays
• Mixed Arrays
• Multi-dimensional Arrays

Chapter 6: Conditionals

• If Statement
• Switch Statement
• Alternative Syntax
• Mixed Modes
• Ternary Operator
• Match Expression

Chapter 7: Loops

• While Loop
• Do-while Loop
• For Loop
• Foreach Loop
• Alternative Syntax
• Break
• Continue
• Goto

Chapter 8: Functions

• Defining Functions
• Calling Functions
• Function Parameters
• Optional Parameters
• Named Arguments
• Variable Parameter Lists
• Return Statement
• Scope and Lifetime
• Anonymous Functions
• Closures
• Arrow Functions
• Generators
• Built-in Functions

Chapter 9: Class

• Instantiating an Object
• Accessing Object Members
• Initial Property Values
• Constructor
• Destructor
• Case Sensitivity
• Object Comparison
• Anonymous Classes
• Closure Object

Chapter 10: Inheritance

• Overriding Members
• Final Keyword
• instanceof Operator

Chapter 11: Access Levels

• Private Access
• Protected Access
• Public Access
• var Keyword
• Object Access
• Access Level Guideline
• Accessors

Chapter 12: Static

• Referencing Static Members
• Static Variables
• Late Static Bindings

Chapter 13: Constants

• const
• define
• const and define
• Constant Guideline
• Magic Constants

Chapter 14: Interface

• Interface Signatures
• Interface Example
• Interface Usages
• Interface Guideline

Chapter 15: Abstract

• Abstract Methods
• Abstract Example
• Abstract Classes and Interfaces
• Abstract Guideline

Chapter 16: Traits

• Inheritance and Traits
• Trait Guidelines

Chapter 17: Importing Files

• Include Path
• require
• include_once
• require_once
• return
• _autoload

Chapter 18: Type Declarations

• Argument Type Declarations
• Return Type Declarations
• Strict Typing
• Nullable Types
• Union Types
• Property Type Declarations

Chapter 19: Type Conversions

• Explicit Casts
• settype
• gettype

Chapter 20: Variable Testing

• isset
• empty
• is_null
• unset
• Null Coalescing Operator
• Nullsafe Operator
• Determining Types
• Variable Information

Chapter 21: Overloading

• Property Overloading
• Method Overloading
• isset and unset Overloading

Chapter 22: Magic Methods

• __toString
• __invoke
• Object Serialization
• __sleep
• __wakeup
• __set_state
• Object Cloning

Chapter 23: User Input

• HTML Form
• Sending with POST
• Sending with GET
• Request Array
• Security Concerns
• Submitting Arrays
• File Uploading
• Superglobals

Chapter 24: Cookies

• Creating Cookies
• Cookie Array
• Deleting Cookies

Chapter 25: Sessions

• Starting a Session
• Session Array
• Deleting a Session
• Sessions and Cookies

Chapter 26: Namespaces

• Creating Namespaces
• Nested Namespaces
• Alternative Syntax
• Referencing Namespaces
• Namespace Aliases
• namespace Keyword
• Namespace Guideline

Chapter 27: References

• Assign by Reference
• Pass by Reference
• Return by Reference

Chapter 28: Advanced Variables

• Curly Syntax
• Variable Variable Names
• Variable Function Names
• Variable Class Names

Chapter 29: Error Handling

• Correcting Errors
• Error Levels
• Error-Handling Environment
• Custom Error Handlers
• Raising Errors

Chapter 30: Exception Handling

• try-catch Statement
• Throwing Exceptions
• catch Block
• finally Block
• Rethrowing Exceptions
• Uncaught Exception Handler
• Errors and Exceptions

Chapter 31: Assertions

• Assert Performance

This pocket reference has been updated with the new PHP 8 release. It is a condensed, code-rich scripting and syntax handbook for the PHP scripting language. You won’t find any technical jargon, bloated samples, drawn-out history lessons or witty stories in this book. What you will find is a web scripting language reference that is concise, to the point, and highly accessible. The book is packed with useful information and is a must-have for any PHP programmer or web developer. In it, you will find a concise reference to the PHP 8 scripting language syntax. It includes short, simple, and focused code examples; a well-laid-out table of contents; and a comprehensive index allowing easy review.
PHP 8 Quick Scripting Reference presents the essentials of PHP in a well-organized format, including new features in PHP 8 such as the just in time (JIT) compiler, union types, nullsafe operator, null coalescing assignment operator, match expressions, named arguments, throw expressions, static return type, non-capturing catches, reclassified engine warnings and constructor property promotion.

What You Will Learn

• Discover what is new in PHP 8 and how to get started with it
• Work with variables, operators, strings, arrays, conditionals, loops, and other constructs
• Group and reuse code with functions, methods, and namespaces
• Use object-oriented features such as classes, inheritance, abstract classes, and interfaces
• Import files and retrieve user data
• Make use of type declarations and type conversions
• Test variables, create references, and use overloading methods
• Store user data with cookies and sessions
• Deal with errors through error handling, exception handling, and assertions