New features of PHP 5.4 with Examples

Friday, 19 June 2015

New features of PHP 5.4 with Examples

Following are 5.4 new features.

Traits has been added. For Example:

 //Create traits
trait HttpRequest 
{ 
      public function getHttpResponse($url, $port) 
      { 

            return $response; 
      } 
} 


//Use the traits

class ABC_API 
{ 
      use HttpRequest; // use our trait 

      public function getResponse($url) 
      { 
            return $this->getHttpResponse($url, 80); 
      } 
}

Short array syntax has been added. For Example:

$array = [1,2,3,'Web technology','Experts Notes'];

Function array dereferencing has been added. For Example:

function fruits(){
return array(0=>'Apple', 1=>'Banana', 2=>'Mango',3=>'Orange');
}   
echo fruits()[2]; //Mango

Closures now support $this.

Class member can access on instantiation has been added. For Example:

class test{
  function fruits(){
  return array(0=>'Apple', 1=>'Banana', 2=>'Mango',3=>'Orange');
  }
}
print_r((new test())->fruits());

Output:
Array
(
    [0] => Apple
    [1] => Banana
    [2] => Mango
    [3] => Orange
)

Class::{expr}() syntax is now supported. For Example:

class test{
static  function newMethod(){
echo "called function";
}
}  

$method = 'newMethod';
// this works 
test::$method(); 

// and this works 
test::{'newMethod'}();