Php reference manual

Author(s)

Stig S峨er Bakken

Alexander Aulbach

Egon Schmid

Jim Winstead

Lars Torben Wilson

Rasmus Lerdorf

RAndrei Zmievski

Jouni Ahto

Subject

Learning php scripting language

Index

1. Basic syntax
   • Escaping from HTML
     • [Example] > Ways of escaping from HTML
     • [Example] > Advanced escaping
     • Instruction separation
     • Comments
2. Types
   • Introduction
   • Booleans
     • Syntax
     • Converting to boolean
   • Integers
     • Syntax
       • [Example] > Integer literals
     • Integer overflow
     • Converting to integer
       • From booleans
       • From floating point numbers
       • From strings
       • From other types
   • Floating point numbers
     • Floating point precision
   • Strings
     • Syntax
       • Single quoted
       • Double quoted
       • Heredoc
         • [Example] > Here doc string quoting example
       • Variable parsing
         • Simple syntax
         • Complex (curly) syntax
       • String access by character
         • [Example] > Some string examples
     • Useful functions
     • String conversion
   • Arrays
     • Syntax
       • Specifying with array
       • Creating/modifying with square-bracket syntax
     • Useful functions
     • Array do's and don'ts
       • Why is $foo[bar] wrong?
       • So why is it bad then?
     • Examples
       • [Example] > Using array()
       • [Example] > Collection
       • [Example] > One-based index
       • [Example] > Filling real array
       • [Example] > Sorting array
       • [Example] > Recursive and multi-dimensional arrays
   • Objects
     • Object Initialization
   • Resource
     • Freeing resources
   • NULL
     • Syntax
   • Type Juggling
     • Type Casting
3. Variables
   • Basics
   • Predefined variables
   • Variable scope
   • Variable variables
   • Variables from outside PHP
     • HTML Forms (GET and POST)
       • [Example] > Simple form variable
       • [Example] > More complex form variables
       • [Example] > IMAGE SUBMIT variable names
     • HTTP Cookies
     • Environment variables
     • Dots in incoming variable names
     • Determining variable types
4. Constants
   • Syntax
     • [Example] > Defining Constants
   • Predefined constants
5. Expressions
6. Operators
   • Operator Precedence
   • Arithmetic Operators
   • Assignment Operators
   • Bitwise Operators
   • Comparison Operators
   • Error Control Operators
   • Execution Operators
   • Incrementing/Decrementing Operators
   • Logical Operators
   • String Operators
7. Control Structures
   • if
   • else
   • elseif
   • Alternative syntax for control structures
   • while
   • do..while
   • for
   • foreach
   • break
   • continue
   • switch
   • declare
     • Ticks
       • [Example] > Profile a section of PHP code
   • return
   • require
     • [Example] > Basic require examples
   • include
     • [Example] > Basic include example
     • [Example] > Including within functions
     • [Example] > include through HTTP
     • [Example] > include() and conditional blocks
     • [Example] > include and the return statement
   • require_once
   • include_once
8. Functions
   • User-defined functions
   • Function arguments
     • Making arguments be passed by reference
     • Default argument values
     • Variable-length argument lists
   • Returning values
   • old_function
   • Variable functions
     • [Example] > Variable function example
9. Classes and Objects
   • class
   • extends
   • Constructors
   • ::
   • parent
   • Serializing objects - objects in sessions
   • The magic functions __sleep and __wakeup
   • References inside the constructor
10. References Explained
    • What References Are
    • What References Do
    • What References Are Not
    • Passing by Reference
    • Returning References
    • Unsetting References
    • Spotting References
      • global References
      • $this