How to change configuration settings
Basic syntax
PHP Manual
Language Reference
Basic syntax
Instruction separation
Comments
Types
Booleans
Integers
Floating point numbers
Strings
Arrays
Objects
Resources
NULL
Pseudo-types and variables used in this documentation
Type Juggling
Variables
Predefined variables
Variable scope
Variable variables
Variables from outside PHP
Constants
Magic constants
Expressions
Operators
Arithmetic Operators
Assignment Operators
Bitwise Operators
Comparison Operators
Error Control Operators
Execution Operators
Incrementing/Decrementing Operators
Logical Operators
String Operators
Array Operators
Type Operators
Control Structures
if
else
elseif
Alternative syntax for control structures
while
do-while
for
foreach
break
continue
switch
declare
return
require
include
require_once
include_once
Functions
Function arguments
Returning values
Variable functions
Internal (built-in) functions
Classes and Objects (PHP 4)
extends
Constructors
Scope Resolution Operator (::)
parent
Serializing objects - objects in sessions
The magic functions __sleep and __wakeup
References inside the constructor
Comparing objects
Classes and Objects (PHP 5)
The Basics
Autoloading Objects
Constructors and Destructors
Visibility
Scope Resolution Operator (::)
Static Keyword
Class Constants
Class Abstraction
Object Interfaces
Overloading
Object Iteration
Patterns
Magic Methods
Final Keyword
Object cloning
Comparing objects
Reflection
Type Hinting
Late Static Bindings
Namespaces
Namespace definition
Using namespaces
Global space
__NAMESPACE__
Name resolution rules
Exceptions
References Explained
What References Do
What References Are Not
Passing by Reference
Returning References
Unsetting References
Spotting References
How to change configuration settings
Basic syntax
PHP Manual