PHP Language Specifications
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PHP Language Specifications

WIP PHP Language Specifications

About the Book

This is a compiled ebook from the mirror github repo ( ) which I encorage you to check and try to help.

I will try to update this book on a regular bases, but thats depending on the free time which I might have.

If you find any issue, please contact me so that I try to solve it.

PS: the book is not perfect, and am doing my best to enhance it by time with each new release.

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About the Author

Zaher Ghaibeh
Zaher Ghaibeh

PHP programmer.

Table of Contents

  • Specification for PHP
  • Introduction
  • Conformance
  • Terms and Definitions
  • Basic Concepts
    • Program Start-Up
    • Program Termination
    • __halt_compiler
    • The Memory Model
    • Scope
    • Storage Duration
  • Types
    • General
    • Scalar Types
    • Composite Types
  • Constants
    • General
    • Context-Dependent Constants
    • Core Predefined Constants
    • User-Defined Constants
  • Variables
    • General
    • Kinds of Variables
    • Predefined Variables
  • Conversions
    • General
    • Converting to Boolean Type
    • Converting to Integer Type
    • Converting to Floating-Point Type
    • Converting to String Type
    • Converting to Array Type
    • Converting to Object Type
  • Lexical Structure
    • Scripts
    • Grammars
    • Lexical analysis
  • Expressions
    • General
    • Primary Expressions

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