PHP 5.5 New Features

PHP 5.5 New Features

PHP 5. 5. 0 has become released, bringing with it tons  of new features and steps. TechRepublic has rounded up 10 upgrades  that web developers should check  in the new release.

1. Generators  are available

Generators provide a simple  approach to iterate through data without needing to write a class implementing  this  Iterator interface.

Just like  another  function a generator is defined  while using the  function keyword, but unlike a usual function that just returns  an end result  once, a generator can send back  several  results as needed using  this  yield keyword.

A generator  means that you can  iterate over a set of data  having a  foreach loop without needing  to make  an array in memory. The lack  to create an array lessens  memory usage and processing  time period.

2. Finally keyword added

The addition  on the  "finally" keyword refines the way that PHP refers to  exception handling.

Like other high level  languages PHP  means that you can  wrap code in an aim to  catch block. Any exception that is certainly  thrown by code within the try block  will likely be  passed to code within the catch block for being  handled.

The finally keyword  means that you can  define a block of  value, to be placed after  this  catch block, that will regularly be  executed after the try  in addition to  catch blocks, regardless of  no matter if  an exception was thrown.

3. New password hashing API

The new password hashing API  means that you can  use one line of code to come up with  a salted password hash  applying  bcrypt.

The current default encryption formula used is bcrypt, although it is expected to change as  completely new  and stronger algorithms are  included in PHP.

It is recommended to store the spark a  database column that can grow  beyond 60 characters.

Array  in addition to  string literal deferencing added

Both array and string literals is now able to  be dereferenced directly to  admittance  individual elements and characters.

4. Much easier  class name resolution

The class keyword is now able to be used to retrieve the fully qualified name of any  class, including thenamespace it  is placed  within.

5. Empty() function accepts expressions

The empty() function, used  to view  whether a variable is empty  or maybe a  value equals false, can now be passed  a manifestation  and determine whether the  changing  that expression returns is clear.

6. Support for the Zend Optimiser+ opcode cache  added

The Zend Optimiser+ opcode cache has become  added to PHP as the revolutionary  OPcache extension.

OPcache improves performance of scripts by removing  your need  for PHP to load and parse scripts each time a  request is made. It  defines  this by storing precompiled  screenplay  bytecode in shared memory.

7. foreach loops  support the list() construct

Values insides nested arrays  is now able to  be assigned to variables having a  foreach() loop and thelist() assemble.

8. New features  included in GD library

PHP's GD extension for creating and manipulating  graphics  has gained new capabilities. Like for example , flipping support using the completely new  imageflip() function, advanced cropping  service using theimagecrop() and imagecropauto() functions, and WebP read and write support ,when using the  imagecreatefromwebp() and imagewebp() functions.

9. foreach loops  currently support non-scalar keys

When iterating  with the  array using a foreach  hook , element keys are now able to get a non-scalar value, that is a value in addition to an integer or a sequence.