Php v5.3+ features
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This document summarizes new features introduced in versions of PHP from 5.3 to 5.6, including improvements to namespaces, closures, traits, generators, import functions and constants, and variadic functions. It provides an overview of performance enhancements as well as deprecated and removed functionality across the PHP versions. The document is presented by Michael Bui on Facebook and Twitter.
![PHP v5.4
● PHP_BINARY constant
● Array to string conversions will trigger
a notice
● Array callbacks:
○ [$obj, ‘method’]
○ [‘ClassName’, ‘method’]
● Memory & performance improved](https://image.slidesharecdn.com/phpv5-160129090558/85/Php-v5-3-features-4-320.jpg)
![PHP v5.4 (Cont.)
● Short array syntax:
○ [‘a’=>1,’b’=>2] === array(‘a’=>1,’b’=>2)
○ Array dereferencing: getArray()[0];
● Initiation time access
○ (new Classname())->method()
● Dynamic method calls:
○ ClassName::{$var}()
○ (new ClassName())->{$var}()](https://image.slidesharecdn.com/phpv5-160129090558/85/Php-v5-3-features-6-320.jpg)
![PHP v5.5
● “finally” supported
● Fully qualified classname constant
○ ClassName::CLASS
● Literal Dereferencing
○ [‘a’,’b’,’c’][1] will return ‘b’
● “foreach” support “list()”
○ foreach ($records as list($name, $email)) {}
● Generators & Co-routines](https://image.slidesharecdn.com/phpv5-160129090558/85/Php-v5-3-features-8-320.jpg)
Php v5.3+ features
- 1. PHP v5.3+ FEATURES Michael Bui (FB & TW: MichaelBui2812)
- 2. PHP v5.3 ● “ereg” deprecated ● SPL always enabled ● Reflection always enabled ● Magic methods ○ __invoke() ○ __callStatic() ● Performance improved
- 3. PHP v5.3 ● Namespace ○ PSR-0 ○ Composer ○ For classes, functions and constants ● Import classes ○ “use” keyword ○ relative & absolute namespaces ● Closures
- 4. PHP v5.4 ● PHP_BINARY constant ● Array to string conversions will trigger a notice ● Array callbacks: ○ [$obj, ‘method’] ○ [‘ClassName’, ‘method’] ● Memory & performance improved
- 5. PHP v5.4 ● Traits ○ “compiler level” copy-n-paste (literally) ○ “insteadof” & “as” to solve collisions ● Closures ○ Support “$this” ○ Re-bind “$this” ● Short echo tags “<?=...?>” always work ● Binary numbers (0b...)
- 6. PHP v5.4 (Cont.) ● Short array syntax: ○ [‘a’=>1,’b’=>2] === array(‘a’=>1,’b’=>2) ○ Array dereferencing: getArray()[0]; ● Initiation time access ○ (new Classname())->method() ● Dynamic method calls: ○ ClassName::{$var}() ○ (new ClassName())->{$var}()
- 7. PHP v5.5 ● RegExp /e modifier deprecated ● Mysql extension officially deprecated ● boolval() ● empty() support any expression ● OPCache built-in
- 8. PHP v5.5 ● “finally” supported ● Fully qualified classname constant ○ ClassName::CLASS ● Literal Dereferencing ○ [‘a’,’b’,’c’][1] will return ‘b’ ● “foreach” support “list()” ○ foreach ($records as list($name, $email)) {} ● Generators & Co-routines
- 9. PHP v5.6 ● Import functions & constants ○ use function NameSpacedmethod; ○ use const NameSpacedCONSTANT; ● Scalar expressions supported in ○ Constants: const FOO = self::BAR . “!”; ○ Class properties: public $a = 1 + 1; ○ Function arguments: function f($a = 1 + 1) {} ○ … ● __debugInfo()
- 10. PHP v5.6 (cont.) ● Variadic functions ○ Referencing ○ Type hinting ● Argument unpacking ● Exponent operator (**) ● Upload more than 2GB
- 12. THANK YOU! Michael Bui (FB & TW: MichaelBui2812)