PHP tags Escaping from HTML Instruction separation Comments

Introduction Booleans Integers Floating point numbers Strings Arrays Iterables Objects Resources NULL Callbacks / Callables Pseudo-types and variables used in this documentation Type Juggling

Basics Predefined Variables Variable scope Variable variables Variables From External Sources

Syntax Magic constants

Operator Precedence Arithmetic Operators Assignment Operators Bitwise Operators Comparison Operators Error Control Operators Execution Operators Incrementing/Decrementing Operators Logical Operators String Operators Array Operators Type Operators

Introduction if else elseif/else if Alternative syntax for control structures while do-while for foreach break continue switch declare return require include require_once include_once goto

User-defined functions Function arguments Returning values Variable functions Internal (built-in) functions Anonymous functions

Introduction The Basics Properties Class Constants Autoloading Classes Constructors and Destructors Visibility Object Inheritance Scope Resolution Operator (::) Static Keyword Class Abstraction Object Interfaces Traits Anonymous classes Overloading Object Iteration Magic Methods Final Keyword Object Cloning Comparing Objects Late Static Bindings Objects and references Object Serialization OOP Changelog

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

Basics Errors in PHP 7

Extending Exceptions

Generators overview Generator syntax Comparing generators with Iterator objects

What References Are What References Do What References Are Not Passing by Reference Returning References Unsetting References Spotting References

Superglobals $GLOBALS $_SERVER $_GET $_POST $_FILES $_REQUEST $_SESSION $_ENV $_COOKIE $php_errormsg $HTTP_RAW_POST_DATA $http_response_header $argc $argv

Exception ErrorException Error ArgumentCountError ArithmeticError AssertionError DivisionByZeroError CompileError ParseError TypeError

The Traversable interface The Iterator interface The IteratorAggregate interface Throwable The ArrayAccess interface The Serializable interface The Closure class The Generator class

Socket context options HTTP context options FTP context options SSL context options CURL context options Phar context options MongoDB context options Context parameters Zip context options

file:// http:// ftp:// php:// zlib:// data:// glob:// phar:// ssh2:// rar:// ogg:// expect://