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Rasmus Lerdorf
1995
Hypertext Preprocessor
PHP: Hypertext Preprocessor
General-purpose scripting language
No formal specification
Web server PHP processor module interpreted
Standalone graphical interpreter application
Command-line interface
PHP Group [US]
De facto standard
PHP License
Free software
Libraries and core build
Internet-aware system modules built in
Extensions (C) add functionality
PHP Extension Community Library (PECL)
CGI standard
Common Gateway Interface
RFC 3875: CGI Version 1.1
Scripting programming language
CGI scripts
Generation of web pages to a stand-alone executable file delegation
PHP Reference
Basic syntax
Types
Variables
Constants
Expressions
Operators
Control Structures
Functions
Classes and Objects
Namespaces
Exceptions
References Explained
Predefined Variables
Predefined Exceptions
Predefined Interfaces
Context options and parameters
Supported Protocols and Wrappers
PHP engine
PHP interpreter