What was changed in PHP 7.2

PHP 7.1 was released 9 months ago so it’s time to look at PHP 7.2 release. At the moment of 
writing this article PHP 7.2 is in Beta 3 version  Looking at releases of previous versions and 
release plan for PHP 7.2 I think we should expect the final release until the end of year, probably 
at the beginning of December 2017. 

 Security Is the Most Important Thing Here

The 7.2 Release offers some highly needed improvements to security.

• The Libsodium cryptography library, for authenticated encryption and high-speed elliptic

 cryptography, is now a core extension. I've been waiting for this to happen for a while now.

• The Argon2 algorithm for disagree passwords addresses my personal drawback of the 

current algorithms, in that they were construct for the highest memory filling rate.
 Bye bye Mcrypt. The Mcrypt cryptography library development has been officially removed. 

• PHP developers have said that Mcrypt highly inhibited the growth of the PHP language

 and served as "abandonware."

• SSL-Secure Sockets Layer or TLS -Transport Layer Security framework have been

 improved.PHP is the simple programming language used to develop website with 

PHP Training in Chandigarh.

Improved Programming Language Features

There are other updates to help fix some people's complaints about the language. So, here we 
go.

• A new warning has been added when calling the count () function with a parameter 

that is a scalar, a parameter that is null, or an object that does not implement the Countable 
interface.

• Object type hints fix a situation in which a developer can't declare a function that needs

 to be passed an object as a parameter or declare that a function should return an object. 
The fix uses object as a parameter type and as a return type.

• Hash context as an object. Issue the hash extension to use an object extension for

 hash contexts instead of using resources.

• Conversion of numeric keys in object/array casts addresses an issue with the Zend 

Engine, which powers PHP 7. The engine has cases in which array hash tables can contain
 numeric strings, while object hash tables can have integer keys. In such cases, PHP code 
can't find the keys. With the fix in PHP 7.2, keys of arrays or object hash tables are 
converted as appropriate, so numeric string property names in objects become integer 
array keys and vice versa, solving the issue of inaccessible properties.

PHP Training in Chandigarh is the best way to learn programming language very 

easily for developing any website.

PHP training in Chandigarh

PHP is a server-side scripting language used to create web applications and dynamic websites,

 but procedural PHP is no longer useful for making more professional and large web applications 

easier to manage. Therefore, OOP (object-oriented programming) is now the main part of PHP, 

and this course is about learning OOP in PHP.

PHP OOP explained the basics

the basic concepts of OOP in PHP, it includes all classes, methods, functions, magic work and

 techniques that are often used while creating web applications using PHP OOP.

Projects using PHP OOP

the first project will be about creating registration forms, and the final and major project will be a

 complete content management system (CMS) with an administrator.Learn PHP with 

PHP Training institute in Chandigarh.

Course material and structure

Content of this course is mostly video lectures, but with video lectures, you will also find source

 files which will be linked to each lecture, so that you can practice them and prepare projects.

Who is the target audience?

Those who want to understand basic with the practical approach of PHP OOP, they should be

 included in this course.People who want to learn PHP Object-oriented programming from very 

basic, should be included in this course

PHP Inheritance

Inheritance is one of the popular object-oriented programming features. It allows to keep shared 

properties and tasks between related classes. This feature allows us to connect with classes,

 intangible data and methods and increase re usability.

In migrating from PHP version 4 to PHP version 5, one of the noticeable changes is to present an 

object-oriented programming feature as we have seen about the development of PHP. In a limited 

set of OOPs features supported by PHP, the heritage is an attractive concept by providing the above 

listed functionality.PHP course in Chandigarh is the best place to learn PHP .

Before PHP is inherited, let us refresh the general idea about heritage and its types. According 

to this principle, one class can be taken from another class, whereas derivative orbits are called 

children or subclasses and the second is called parent or superclass. Superclass has its own

 properties and functions that can be taken from the sub-class and added to it, there may be

 properties in the sub-class.

Now the advantages of inheritance are that there is no need to redefine the essential qualities

 of the superclass again in the sub-class as they can be inherited. That is, we have said that 

legacy re usability increases and reducing the line of code, and in this way it increases simplicity

 between  the interrelated classes.

 Learn More about inheritance visit:- PHP Inheritance

Learn PHP Programming Language Concept

Learn PHP Programming Language Concept: Definition

Full form of PHP: PHP is known as  "PHP Hypertext Preprocessor". You have not got 
any confusion because of PHP's full form, because PHP is coming in this full form. This 
kind of full to is called recursive acronym, which means an acronym which refers itself to
 itself.

PHP Programming Language: PHP is a very open source general-purpose scripting 
language that is the best option for web development. This is an HTML-embedded 
scripting language that you can embed with HTML to create dynamic web pages.
 Programmer does not just need to write heavy code of HTML, but now programmer
 coding mai can use PHP with embed tags and can also easily switch between HTML 
and PHP. PHP syntax is taken from different programming languages ​​such as C, Java,
 Perl. PHP is a very easy programming language learn PHP with
  PHP Training in Chandigarh .

PHP Features -

• PHP is also called server-side scripting language because PHP scripts execute 

on the server, and because it executes on the server, the client can not see the PHP code 
and the result is displayed on your browser.

• The power of PHP is in its compatibility, which supports different types of databases, 

as well as communicate with PHP network, IMAP, SNMP, NNTP, POP3, or HTTP.

• PHP can be run on different platforms such as Windows, Linux, Unix, Mac OS X, etc.
• PHP is almost compatible with almost all servers coming into use today, such as 

Apache, IIS, etc.

• PHP is free and you can download it from PHP's official PHP website - www.php.net
• PHP is easy to learn . Learn PHP with PHP training in Chandigarh.
• In Web Development, HTML is used by enclosing PHP script in special PHP tags.

Other Important Point about PHP -

• PHP files are extension .php.
• PHP files can be CSS, HTML, text, JavaScript and PHP code save.
• In PHP, you can not only see the output of HTML but also images, PDF files

 and Flash movies, any text, such as XHTML and XML etc. The output also shows.

PHP's ancient history

PHP was started in 1995 by Rasmus Lerdorf. They wrote 'Common gateway interface' 
(CGI) Programs 'C'. He used it to create his personal home page. Then they used it in
 a web form and used their database. Its name is 'Personal Homepage / Form Interpreter
 or PHP / IF.It is used in the creation of simple but dynamic Web application. With the 
intention to improve study and code on bug reporting, they named the application as '
Personal Homepage Tools version 1.0'. The basic functionalities of the application 
were fixed. These functions were prevalent till 2013 These were variables like Perl,
 form handling, the ability to embed HTML. Due to these characteristics, it has been in 
vogue for so long. Syntax of PHP was largely matched by Perry. But there was a lot of 
difference between them. But it was much simpler. The working area of ​​PHP was also
 very low. And it was also less consistent.PHP Training in Chandigarh is the best
 Place to learn PHP Training for creation of your own websites.

Lerdorf did not intend to make any programming language. He just kept writing the code 
of the next logical step with the intention of organizing his personal work and consequently 
a development team went up. After months of hard work and persistence with the 
development and testing teams, PHP / FI 2 was released in November 1997. This 
happened only after the beta testing. No layout or plan was created before PHP Design. 
Because it was only for personal work, Rasmus Lerdorf did not understand it. Because of 
this, the names of its functions are quite inconsistent. Its parameters are not even in the
 correct order. There was a long delay in looking for the right direction.

What is Sessions- PHP Training

What is Sessions?

Sessions are a clean way to store data for originals users against a unique session ID. This 
can be used to continue state data between page requests. Session IDs are simply sent to the 
browser via session cookies and the ID is used to fetch actual session data. The absence of an
 ID or session cookie lets PHP know to build a new session, and achieve a new session ID.

Sessions follow a simple system. When a session is started, PHP will either retrieve an existing 
session using the ID passed or if no session is catch it will create a new session. PHP will 
colonize  the $_SESSION superglobal with any discussions data after the session has started. 
When PHP shuts down, it will naturally take the contents of the $_SESSION superglobal, 
serialize it, and send it for storage accepting the session save handler. Learn PHP using 
sessions with PHP Training in Chandigarh. 

  
The advantages of using session state are:

• It is easy to applicable and is just similar to using View State.

• Appliance of data is very fast as it stock session data in memory object of the modern 
application domain.

• It ensures platform scalability and it works in the multi-process composition.

• Also it ensures data endurance, since the session state retains data even if ASP.NET work 
process restarts .

The disadvantages of using session state are:

• As the session state data is gathered in server memory, it is not desirable to use session 
state when you are working with large sum of data.

• With the use of Session state, it will distribute the performance of memory, because session 
state variable stays in memory until you destroy the state.

• If the worker Process and application domain convert all session data will be lost.

• We can't use it in web Garden outline and is not suitable for web farm scenarios also. 

PHP Training in Chandigarh used to design website design and website development.

Namespaces overview- PHP Training

What are namespaces in PHP?

In the extensive definition namespaces are a way of enclose items. This can be seen as an 
abstract access in many places. For example, in any operating system agenda serve to group 
similar files, and act as a namespace for the case within them. As a concrete example, the file  
foo.txt can continue in both directory /home/greg and in /home/other, but two copies of foo.txt 
cannot co-exist in the duplicate directory. In extensions, to access the foo.txt file foreign of the
 /home/greg directory, we must assume the directory name to the filename adoption the directory 
separator to get /home/greg/foo.txt. This same principle develop to namespaces in the programming 
world. Learn More about namespace form PHP Training in Chandigarh.

In the PHP world, namespaces are arrange  to solve two problems that authors of libraries and 
applications encounter when creating recyclable code aspect such as classes or functions:

1. Name culmination between code you fabricate, and household PHP 
   classes/capacities/constants or outsider classes/capacities/constants.
2. Capacity to other wise(or abbreviate) Extra_Long_Names intended to alleviate the
    primary issue, enhancing believability of source code.

Why Do We Need Namespaces in PHP?

As the size of your PHP code study increases, the more likely you will unwitting discuss a
 function or class name that has been announced before. The problem is distributed if you 
attempt to add third-party ingredient or plugins; what if two or more code sets device a 
‘Database’ class. The only solution has been long class/function names. For example,
 WordPress prefixes every name with ‘WP_’. The Zend Framework uses a deeply 
descriptive naming meeting that results in long-puffing class names .

How are Namespaces Defined?

By default, all consistent, class and function names are arranged in a global space — like 
they were before namespaces were backed.

Namespaced code is decide using a single namespace keyword at the top of your PHP file.

Sub-namespaces

PHP allows you to define a ranking of namespace names so libraries can be subdivided. 
Sub-namespaces are detached using a backslash (\) character, e.g.

• MyProject\SubName
• MyProject\Database\MySQL
• CompanyName\MyProject\Common\Widget

PHP Training in Chandigarh is the best place to learn PHP for developing websites using PHP.

PHP Variable

PHP Variables

PHP variable is an object that holds value. The breadth of a variable in PHP is finite to the
 situation in which it is describe. Scope of a variable defines the convenience and persistence
 of it. PHP variables can be defined in anyone of the following four scopes:

 • Local variables

 • Function parameters

 • Global variables

 • Static variables

In this article we will explore global and super global variables in PHP. Ahead we delve deep
 into global variables in PHP, quick tour of the basics.

Variables in PHP

You can define a variable in PHP by preceding the variable name by a $ sign.

Scope of a variable defines the durability and accessibility of it. In case of the $myVar variable 
bring in the PHP script below is usable from within the test .inc script only.Variables defined 
globally have global scope. On the contrary variables that are local to a function are limited 
to the scope of that function in which they are defined.

When you assassinate the over script, it wouldn't goods any output. The logic is that you
 have announced a variable in the local scope that hasn't been assigned any value. If you are 
to access a global variable from within a function in PHP for PHP Training in Chandigarh 
you should explicitly specify it as global.

While stated variables in PHP, the following points should be noted:

• The name of a variable should start with the $ sign
• The name of a variable should start with a letter or the underscore character
• The name of a variable cannot start with a number
• The name of a variable can only contain alphanumeric characters and underscores
• Variable names in PHP are case-sensitive. Hence, $myVar and $MYVAR are two

 different variables in PHP .

PHP Global Variables

A global variable in PHP is one that can be accessed from any part of the program. This is 
in disparity to a local variable that can be achieve only from within the scope or situation in
 which it is describe. It should be noted that if a global variable needs to be modified it should be
 explicitly declared global in the function in which it would be modified in  
PHP Training in Chandigarh.To appliance this, you should anticipate the variable 
with the keyword GLOBAL.

HP Global Variables - Superglobals

Super global variables in PHP are those variable which are always accessible, regardless 
of scope are they are in the global scope - hence they are globally accessible. Here's the list of 
pre-defined PHP super global variables:

$GLOBALS
$_SERVER
$_REQUEST
$_POST
$_GET
$_FILES
$_ENV
$_COOKIE
$_SESSION

Top Five Databases to Use with PHP

Although MySQL is the most commonly used database software in web applications,
 there are many other database systems that are also popular and provide good solutions in
 certain use-cases. In this article, we will discuss these systems and their advantages and
 disadvantages.

Oracle

The Oracle relational database management system is widely used in enterprise information 
systems. Many big corporations and government agencies are using Oracle's database software. 
It can be deployed on Windows, UNIX, Linux and OS X operating systems and represents a 
powerful, but complex solution. It supports many advanced features, such as partitioning, 
materialized views, many index types and parallel queries. Also, Oracle provides good database
 security measures, including brute-force protection and password complexity rules. After all,
 due to its complication, it is only relevant for large directory. Small and mid-sized association
 that have small databases are considered to use one of the clean explanation.

Microsoft SQL Server

Microsoft SQL server is a business-oriented database software. It provides enterprise-class 
data management and business intelligence tools. Dissimilar Oracle, it is very simple to use, 
has a lot of certification and great backing. Microsoft SQL server provides great performance
 for real-time applications, as well as business intelligence processes and data analytics.
 Further, it arrange excellent data recovery backing, where in case of a power loss or an 
inaccurate shutdown, the unified database could be reclaimed.On the other hand, SQL 
server is very costly and can be installed only on Windows operating systems.

IBM DB2

IBM DB2 is a database software solution advance for large directory with high-volume 
assignment, while halting a cost efficient system. It is estimated that a company could 
reduce costs by approximately 30 percent by migrating from Oracle to DB. DB2 can be
 run on multiple platforms: Windows, Linux and UNIX.

Admitting DB2 is more practical than Oracle, it does not have as many appearance and 
it is gradual on huge databases

PostgreSQL

PostgreSQL is an open-source database management system. It is commonly used for 
online gaming and data center computerization applications. Admitting not as attractive as
 MySQL, PostgreSQL is a no cost, capable and feature-rich database solution. PostgreSQL 
is deeply programmable and extensile, grant programmers to easily write custom gathered 
action, that can clarify the decapitation of imitated and complex database procedure. Also,
 one of the essential PostgreSQL features is the exhaustive support for decent agreement.
 PHP Training in Chandigarh on the alternative hand, it is not considered to use PostgreSQL
 if you need fast read enterprise, as it is passive that the other explanation.

MySQL

MySQL is the most generally used database software in web function. It is a part of the LAMP
 software array that is commonly installed on web servers. It is an open authority, low cost 
explanation that is easy to usage, has great backing and can be installed on essentially any
 operating system. After all, MySQL has many condition, such as poor performance escalate 
and very little service linked to data gather, fault resilience, and conduct disorder. Learn 
MySQL in PHP Training in Chandigarh.