Language Reference
- Basic syntax
- Types
- Variables
- Constants
- Expressions
- Operators
- Control Structures
- Functions
- Classes and Objects
- Introduction
- The Basics
- Properties
- Class Constants
- Autoloading Classes
- Constructors and Destructors
- Visibility
- Object Inheritance
- Scope Resolution Operator (::)
- Static Keyword
- Class Abstraction
- Object Interfaces
- Traits
- Overloading
- Object Iteration
- Magic Methods
- Final Keyword
- Object Cloning
- Comparing Objects
- Type Hinting
- Late Static Bindings
- Objects and references
- Object Serialization
- OOP Changelog
- Namespaces
- Namespaces overview
- Defining namespaces
- Declaring sub-namespaces
- Defining multiple namespaces in the same file
- Using namespaces: Basics
- Namespaces and dynamic language features
- namespace keyword and __NAMESPACE__ constant
- Using namespaces: Aliasing/Importing
- Global space
- Using namespaces: fallback to global function/constant
- Name resolution rules
- FAQ: things you need to know about namespaces
- Exceptions
- Generators
- References Explained
- Predefined Variables
- Superglobals — Superglobals are built-in variables that are always available in all scopes
- $GLOBALS — References all variables available in global scope
- $_SERVER — Server and execution environment information
- $_GET — HTTP GET variables
- $_POST — HTTP POST variables
- $_FILES — HTTP File Upload variables
- $_REQUEST — HTTP Request variables
- $_SESSION — Session variables
- $_ENV — Environment variables
- $_COOKIE — HTTP Cookies
- $php_errormsg — The previous error message
- $HTTP_RAW_POST_DATA — Raw POST data
- $http_response_header — HTTP response headers
- $argc — The number of arguments passed to script
- $argv — Array of arguments passed to script
- Predefined Exceptions
- Predefined Interfaces and Classes
- Traversable — The Traversable interface
- Iterator — The Iterator interface
- IteratorAggregate — The IteratorAggregate interface
- ArrayAccess — The ArrayAccess interface
- Serializable — The Serializable interface
- Closure — The Closure class
- Generator — The Generator class
- Context options and parameters
- Socket context options — Socket context option listing
- HTTP context options — HTTP context option listing
- FTP context options — FTP context option listing
- SSL context options — SSL context option listing
- CURL context options — CURL context option listing
- Phar context options — Phar context option listing
- MongoDB context options — MongoDB context option listing
- Context parameters — Context parameter listing
- Supported Protocols and Wrappers
- file:// — Accessing local filesystem
- http:// — Accessing HTTP(s) URLs
- ftp:// — Accessing FTP(s) URLs
- php:// — Accessing various I/O streams
- zlib:// — Compression Streams
- data:// — Data (RFC 2397)
- glob:// — Find pathnames matching pattern
- phar:// — PHP Archive
- ssh2:// — Secure Shell 2
- rar:// — RAR
- ogg:// — Audio streams
- expect:// — Process Interaction Streams
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