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10 Important Features of Advanced PHP

PHP or Hypertext Preprocessor is a programming language which deals with all the functions on the server-side. PHP is free to use, very easy, and simple to learn. It is the best choice to make websites dynamic with the help of its outstanding features.
It is developed by Rasmus Lerdorf a Danish-Canadian programmer. It is a dynamic type language so there is no need to declare the data type of the variable and all the variables can be used with a symbol $. There are much more features of PHP which should be known by you. So let us start to know about the features of world’s most popular server-side language.

Features of Advanced PHP

1. Database Connectivity

Rather than having your database association settings scattered all over the place, for what reason not simply make one ace record that contains its settings, and afterward incorporate it in your PHP contents? In the event that you have to change subtle elements, later on, you can do it in one record rather than a few documents. This is additionally extremely helpful when you have to utilize different constants and capacities all through various contents. You will always sanitize Data That will go into your Database.

2. Web Services

A web service is a product framework intended for interoperable collaboration over a system. A web service is characterized by a WSDL (Web Services Description Language) report, and different frameworks associated with the web services utilizing SOAP messages, exchanged utilizing HTTP with an XML serialization. A web service is a theoretical asset that gives an arrangement of capacities and is actualized by an operator, which sends and gets messages.

3. APIs

API extends for “Application Programming Interface”.It is a set or decides that enables one bit of programming application to converse with another. Those “rules” includes CRUD operations. Application Programming Interface is a need since this is the lightest method to make, read, refresh or erase data between various applications over the web or HTTP convention. This data is displayed to the client in a moment particularly on the off chance that you utilize JavaScript to render the information on a site page.

4. SPL (Standard PHP Library)

The Standard PHP Library (SPL) is a group of classes and interfaces that are planned to solve the regular issues.
SPL gives an arrangement of standard information structure, an arrangement of iterators to cross over items, an arrangement of interfaces, an arrangement of standard Exceptions, various classes to work with records and it gives an arrangement of capacities like spl_autoload_register()

5. Sessions

Sessions are a straightforward method to store information for singular clients against a one of a kind session ID. This can be utilized to continue state data between page demands. Session IDs are typically sent to the program by means of session treats and the ID is utilized to recover existing session information.

6. Exception handling

Exceptions can be handled by using some keywords in PHP. Keywords for handling all the exceptions. We can use multiple catches for a try block but cannot use multiple tries with a single catch statement. When an exception occurs it creates an object of exception type and throws it to catch statement. Catch statement catch that object and handle it and helps to continue the normal execution of the program. One more keyword is used to handle the exceptions and i.e. throw.

7. Regular Expressions

Regular expressions is a pattern or sequence of characters itself. They give the establishment for pattern-matching functionality. You can search a substring inside another string by using a regular expression, also you can easily replace string by another string and can split a string into substrings. There are two types of Regular Expressions:

  • POSIX Regular Expressions
  • PERL Style Regular Expressions

8. Bugs Debugging

There are different ways by which we can display error messages and debug the bugs of the program. To display an error message in the browser, set the property named display_errors configuration directive to On. To send errors to the web server, set the property log_errors to On.  If you want to display the error messages in both places then you can set them both to On.
PHP provides some constants to set the value of error_reporting such that errors of certain types get reported: E_PARSE (parse errors), E_ERROR (fatal errors), E_ALL (for all errors except strict notices), E_WARNING (warnings), E_NOTICE (notices), and E_STRICT (strict notices).

9. PHP & AJAX

Like HTML, you can embed AJAX in PHP to extract the information from the database easily. It is used for fast interactive communication website with a database.

10. JSON Encoding and Decoding

To encode the JSON, json_encode() function is used in PHP. This function represents the data in JSON format and returns a value on success and failure on FALSE. A function named as json_decode() is used for decoding the JSON format in PHP. It returns the value decoded from JSON to PHP type which is appropriate.
Although most of the essential features of PHP are covered in this article but still there is more to explore for you. Web development is a vast sphere where PHP has a significant position. To understand the web development more clearly you need to understand PHP first since it is the backbone of website development. If you have the desire to master this amazing programming language then joining an ideal training institute is truly advisable.

There are many more features of core and advance PHP, so to know more features of PHP in details, you should take classes from ADMEC Multimedia Institute which is one of the reputed PHP training institutes in North Delhi offers advanced PHP training in Rohini by experienced trainers. Come and explore all the courses to make a bright career in web development with us.

Source:- http://admec-multimedia-institute.blogspot.in/2018/05/10-important-features-of-advanced-php.html

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Array Function

Array functions allow ­us to interact with and manipulate array in various ways.

Arrays are essential for storing, managing and operating a set of variable.

There are various types of array functions are available. Here we will see some important array functions with examples.

1. array_sum ( ): It returns the sum of values in an array as integer or float.

Syntax:

array_sum ($array)

Example of array sum:

<!DOCTYPE html>

<html>

<head>

<title>foreach example</title>

</head>

<body>

        <?php

        $a=array (1,2,3,4); //integer number

        echo “sum(a)=”.array_sum($a);

        $b=array (1.2,2.3); //float number

        echo “sum(b)=”.array_sum($b);

         ?>

 </body>

</html>

output:

sum(a)=10sum(b)=3.5

2.array_pop ( ): It delete the last element of an array.

Example:

<!DOCTYPE html>

<html>

<body>

           <?php

           $a=array (“html”,”css”,”php”);

           array_pop($a); // It will delete php because php is the last element

           print_r($a);

            ?>

</body>

</html>

output:

Array ( [0] => html [1] => css )

3.array_push: The array_push() function inserts one or more elements to the end of an array.

Example:

<!DOCTYPE html>

<html>

<body>

              <?php

             $a=array(“html”,”css”,”php”);

             array_push($a,”java”,”javascript”); //add java and javascript at the end of array.

             print_r($a)

             ?>

</body>

</html>

output:

Array ( [0] => html [1] => css [2] => php [3] => java [4] => javascript )

4.array_rand( ): Returns one or more random keys from an array.

syntax:

array_rand(array,number)

Example:

<!DOCTYPE html>

<html>

<body>

           <?php

           $input = array(“html”, “css”, “php”, “java”, “javascript”);

           $rand_keys = array_rand($input, 2); //any two subject will be showed on the output

           echo $input[$rand_keys[0]] . “\n”;

           echo $input[$rand_keys[1]] . “\n”;

           ?>

</body>

</html>

output:

html javascript

//or

html css

5.array_reverse( ):It returns an array in reverse order.

Example:

<!DOCTYPE html>

<html>

<body>

              <?php

              $a= array(“html”, “css”, “php”, “java”, “javascript”);

              print_r(array_reverse($a));

               ?>

</body>

</html>

output:

Array ( [0] => javascript [1] => java [2] => php [3] => css [4] => html )

6.array_shift: It remove the first element of the array and return the remove element.

Example:

<!DOCTYPE html>

<html>

<body>

          <?php

          $a= array(“html”, “css”, “php”, “java”, “javascript”);

          echo array_shift($a);

           ?>

</body>

</html>

output:

html

7.array_unshift( ): It add one or more element at the beginning of an array.

Example:

<!DOCTYPE html>

<html>

<body>

              <?php

              $a= array(“html”, “css”, “php”, “java”, “javascript”);

              echo array_unshift($a, “c++” , “.net”);

              print_r($a);

               ?>

</body>

</html>

output:

7Array ( [0] => c++ [1] => .net [2] => html [3] => css [4] => php [5] => java [6] => javascript )

8.asort: It is an associative array in ascending order, according to the value.

Example:

<!DOCTYPE html>

<html>

<body>

              <?php

             $age=array(“nandon”=>”22″,”gyandeep”=>”21″,”vinoy”=>”23”);

             asort($age);

             foreach($age as $x=>$x_value)

             {

              echo “Key=” . $x . “, Value=” . $x_value;

              echo “<br>”;

           }

           ?>

</body>

</html>

output:

Key=gyandeep, Value=21

Key=nandon, Value=22

Key=vinoy, Value=23

9.arsort( ): It is an associative array in descending order, according to the value.

Example:

<!DOCTYPE html>

<html>

<body>

         <?php

         $age=array(“nandon”=>”22″,”gyandeep”=>”21″,”vinoy”=>”23”);

         arsort($age);

         foreach($age as $x=>$x_value)

         {

        echo “Key=” . $x . “, Value=” . $x_value;

        echo “<br>”;

        }

       ?>

</body>

</html>

output:

Key=vinoy, Value=23

Key=nandon, Value=22

Key=gyandeep, Value=21

10.array_product( ): It calculate and return the product of an array.

Example:

<!DOCTYPE html>

<html>

<body>

          <?php

         $a=array(10,5);

          echo(array_product($a));

           ?>

</body>

</html>

output:

50

Conclusion: Here in this article we see some important array function with examples.

For more information visit our website: http://www.admecindia.co.in/php-master-course.html

Introduction About PHP Programming Language

What is PHP & its version History?

PHP is acronym of “Hypertext Preprocessor”. PHP is a server side scripting language which is influenced by Perl, C, C++ and Java. Typically PHP programming language is used to manage cookies, session object, database, dynamic content etc.  This programming language supports almost all databases like MySql, Oracle, Sybase, Informix and Microsoft SQL Server. Furthermore PHP programming language supports large number of protocols like POP3, IMAP, LDAP and PHP4 which is fully adjustable to java distributed object architecture like COM and COBRA.

There is some common use of PHP Programming language which follows:

  • PHP performs files functions like create, open, read, write, and close.

  • PHP can handle forms data.

  • You can add, delete, and modify elements within your database easily.

  • You can easily access cookies variables and set cookies.

  • By using PHP you can restrict users to access some pages of user’s website.

  • It can encrypt data which is most essential from security point of view.

Below you can see some characteristics of PHP

  • Simplicity

  • Efficiency

  • Security

  • Flexibility

  • Familiarity

PHP programming language works on cross plate form which means that PHP programming language supports multiple operating system like UNIX, WINDOWS, LINUX, other 32 bit and 6 bit platforms. PHP programming language is powered by ZEND Engine, HHVM, Phalanger, Project Zero and Parrot.

History of PHP

PHP- as known today is really the successor to an item named PHP/FI. Made in 1994 by Rasmus Lerdorf, the first incarnation of PHP was a straightforward situated of Common Gateway Interface (CGI) doubles written in the C programming dialect. Initially utilized for following visits to his online resume, he named the suite of scripts “Individual Home Page Tools,” all the more every now and again referenced as “PHP Tools.” Over time, more usefulness was wanted, and Rasmus revised PHP tools, delivering a much bigger and wealthier execution. This new model was equipped for database cooperation and the sky is the limit from there, giving a structure whereupon clients could create basic element web applications, for example, guestbooks. In June of 1995, Rasmus » discharged the source code for PHP Tools to the general population, which permitted engineers to utilize it as they saw fit. These likewise allowed – and swayed – clients to give fixes to bugs in the code, and to for the most part enhance it.

Example #1 Example PHP/FI Code

<!–include /text/header.html–>

 <!–getenv HTTP_USER_AGENT–>

<!–ifsubstr $exec_result Mozilla–>

Hey, you are using Netscape!<p>

<!–endif–>

 <!–sql database select * from table where user=’$username’–>

<!–ifless $numentries 1–>

Sorry, that record does not exist<p>

<!–endif exit–>

Welcome <!–$user–>!<p>

You have <!–$index:0–> credits left in your account.<p>

 <!–include /text/footer.html–>

PHP 3

PHP 3.0 was the first form that nearly looks like PHP as it exists today. Discovering PHP/FI 2.0 still wasteful and needing peculiarities they required to power an ecommerce application they were creating for a college venture, Andi Gutmans and Zeev Suraski of Tel Aviv, Israel, started yet an alternate complete modify of the fundamental parser in 1997. Approaching Rasmus on the web, they talked about different parts of the current usage and their redevelopment of PHP. In a push to enhance the motor and begin expanding upon PHP/FI’s current client base, Andi, Rasmus, and Zeev choose to team up in the advancement of another, free programming dialect. This altogether new dialect was discharged under another name, that evacuated the ramifications of restricted individual utilize that the PHP/FI 2.0 name held. It was renamed essentially ‘PHP’, with the significance turning into a recursive acronym – PHP: Hypertext Preprocessor.

PHP 4

By the end of 1998, soon after PHP 3.0 was formally discharged, Andi Gutmans and Zeev Suraski had started dealing with a modify of PHP’s center. The configuration objectives were to enhance execution of complex applications, and enhance the particularity of PHP’s code base. Such applications were made conceivable by PHP 3.0’s new peculiarities and backing for a wide mixed bag of outsider databases and Apis, however PHP 3.0 was not intended to handle such mind boggling applications proficiently.

The new motor, named ‘Zend Engine’ (contained their first names Zeev and Andi), met these configuration objectives effectively, and was initially presented in mid 1999. PHP 4.0, taking into account this motor, and coupled with an extensive variety of extra new gimmicks, was authoritatively discharged in May 2000, very nearly two years after its ancestor. Notwithstanding the exceedingly enhanced execution of this adaptation, PHP 4.0 included other key peculiarities, for example, help for a lot of people more web servers, HTTP sessions, yield buffering, more secure methods for taking care of client data and a few new dialect develops.

PHP 5

PHP 5 was discharged in July 2004 after long improvement and a few pre releases. It is essentially determined by its center, the Zend Engine 2.0 with another item model and many other new gimmicks.

PHP’s advancement group incorporates many designers, and also handfuls others taking a shot at PHP-related and supporting tasks, for example, PEAR, PECL, and documentation, and a basic system framework of well in excess of one-hundred individual web servers on six of the seven landmasses of the world. Despite the fact that just an assessment based upon detail from earlier years, it is sheltered to assume PHP is currently introduced on tens or even maybe countless areas as far and wide as possible.

PHP 6 and Unicode

PHP is blessed with mixed reviews because of unavailability of native Unicode support at the crux language level. In the year 2005, a project was initiated to bring native Unicode support throughout PHP (headed by Andrei Zmievski), by installing the International Components for Unicode (ICU) library, & through internally representing text strings as UTF-16. Since this could cause major changes each to the internals of the language and to user code, it had been planned to release this as version 6.0 of the language, along with alternative major options then in development.

However, a shortage of adequate developers led to delays in the projects. Resultant to which a PHP 5.3 release was created in the year 2009 including several Unicode features back-ported from PHP 6, noticeably namespaces. In March 2010, the project was officially abandoned. After that PHP 5.4 release got prepared containing non-Unicode features from PHP 6, like traits and closure re-binging.

PHP 7

As of 2014, work is currently on PHP 7. Initially some dispute was there on the name of the version whether to be called PHP 6 or PHP 7. After a proper vote, the name PHP 7 was chosen.

PHP 7 gets its foundations from an experimental PHP branch formally named as PHPNG (PHP Next Generation), aims at increasing PHP performance through refactoring the Zend Engine. From July 2014, WordPress-based benchmarks, formally named as PHPNG (PHP Next Generation), aims at optimizing PHP performance by refactoring the Zend Engine. As of 14 July 2014, WordPress-based benchmarks, that function the most benchmark suite for PHPNG project, shows virtually 100% increase in performance. Changes from PHPNG are expected create it easier to boost performance within the future, as additional compact information structures and alternative changes are seen as higher fitted to a self-made migration to a just-in-time (JIT) compiler.

Furthermore PHP 7 contains an improved variable syntax internally persistent and complete, resolving an enduring issue in PHP. It will enable the use of ->, [], (), {}, and :: operators along-with discretional meaningful left-hand-side (LHS) expressions.

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