Friday, 23 September 2016

New PHP 7 Feature List

New PHP 7 Feature List

Question: Why we should use PHP 7 as compare to PHP5?
  1. Improved performance. Its twice as fast as PHP 5.
  2. Lower Memory Consumption.
  3. Scalar type declarations.
  4. Return and Scalar Type Declarations.
  5. Consistent 64-bit support
  6. Many fatal errors converted to Exceptions
  7. Secure random number generator.
  8. Various old and unsupported SAPIs and extensions are removed from the latest version
  9. null coalescing operator removed
  10. Anonymous Classes Added.
  11. Zero cost asserts
  12. PHP 7 uses new Zend Engine 3.0

Question: What is PHPNG?
PHPNG branch has been merged into master and has been used as the base for PHP 7.0.
PHPNG target is improve the performance and memory usage efficiency of PHP.

Question: What is a PHP parser?
PHP parser is a software which understand your coding and convert to computer language So that it can be executed & gives a output in HTML.

Question: What is a Scalar type declarations?
Allowing/prohibited datatype declaration in functions know for Scalar type declarations.
There are two options in Scalar type declarations
1) Coercive Mode (default)
2) Strict Mode
function sum(int ...$ints) {
      return array_sum($ints);
   print(sum(2, '20', 4.2)); //26.2

Question: How to use return type declarations?
 function returnIntValue(int $value): int {
      return $value;

Question: What is spaceship operator?
It is Operator which is used to compare two expressions.
It return -1, 0 or 1.
print( 1 <=> 1); //0
print( 1 <=> 2); //-1
print( 2 <=> 1); //1

Question: Can define accept an array?
Yes, It can. For Example:
define('CLIENTS', [
    'client 1',
    'client 2',
    'client 3'

Question: What is use of Closure::call() in PHP7?
It is used to temporarily bind an object scope to a closure and invoke it.
For Example:
 class A {
      private $x = 1;
   $value = function() {
      return $this->x;
   print($value->call(new A));

Question: How to import import Classes using single use statement?
Before PHP 7
use com\mytestclass\ClassA;
use com\mytestclass\ClassB;
use com\mytestclass\ClassC as C;

In PHP 7
 use com\mytestclass\{ClassA, ClassB, ClassC as C};

Question: What are Deprecated features in PHP7?
Following are deprecated feature in PHP7.
  1. Old Style Constructure.
     class A {
          function A() {
  2. Static calls to non-static methods.
    class A {
          function b() {
  3. password_hash() salt

Question: What extension are removed ?
  1. ereg
  2. mssql
  3. mysql
  4. sybase_ct

Question: From where I can download PHP7?

Question: How to setup PHP7 with WampServer?