Acknowledgments . xxiii
Introduction xxv
PART I: LANGUAGE FUNDAMENTALS . 1
Chapter 1: PHP Program Basics 3
Chapter 2: Data Types . 27
Chapter 3: Strings and String Functions . 41
Chapter 4: Conditionals 65
Chapter 5: Custom Functions 81
PART II: WORKING WITH DATA . 109
Chapter 6: Loops 111
Chapter 7: Simple Arrays 125
Chapter 8: Sophisticated Arrays . 143
Chapter 9: Files and Directories 157
PART III: PROGRAMMING WEB APPLICATIONS . 175
Chapter 10: Client/Server Communication and Web Development Basics . 177
Chapter 11: Creating and Processing Web Forms . 195
Chapter 12: Validating Form Data 225
Chapter 13: Organizing a Web Application 239
PART IV: STORING USER DATA WITH BROWSER SESSIONS 259
Chapter 14: Working with Sessions 261
Chapter 15: Implementing a Shopping Cart . 275
Chapter 16: Authentication and Authorization 301
PART V: OBJECT-ORIENTED PHP . 325
Chapter 17: Introduction to Object-Oriented Programming . 327
Chapter 18: Declaring Classes and Creating Objects 337
Chapter 19: Inheritance . 357
Chapter 20: Managing Classes and Namespaces with Composer 381
Chapter 21: Efficient Template Design with Twig . 395
Chapter 22: Structuring an Object-Oriented Web Application 427
Chapter 23: Error Handling with Exceptions . 441
Chapter 24: Logging Events, Messages, and Transactions 459
Chapter 25: Static Methods, Properties, and Enumerations 475
Chapter 26: Abstract Methods, Interfaces, and Traits 497
PART VI: DATABASE-DRIVEN APPLICATION DEVELOPMENT 529
Chapter 27: Introduction to Databases 531
Chapter 28: Database Programming with the PDO Library . 541
Chapter 29: Programming CRUD Operations . 569
Chapter 30: ORM Libraries and Database Security . 595
Chapter 31: Working with Dates and Times . 631
Appendix A: Installing PHP . 663
Appendix B: Database Setup 669
Appendix C: Replit Configuration 673
Index . 679

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