Apr 24, 2023 · PHP is a server-side scripting language, which means that a server executes the instructions in a script. Then, the server provides data on request, channels the requests, and organizes the information in a database. When a web server receives a script, it will process the request and send output to a web browser in an HTML format. Required Knowledge. Before you begin this PHP tutorial, it is necessary that you have a basic understanding and experience of the following: HTML - PHP can be written with HTML, so it's essential. Basic programming knowledge - If you have any traditional programming experience like C, then learning PHP will be very easy for you. June 29, 2020. In June, 1995, Rasmus Lerdorf made an announcement on a Usenet group. You can still read it. Today, twenty five years on, PHP is about as ubiquitous as it could possibly have become ...PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now ». Setting up PHP on LiteSpeed Web Server is simple with the induction of the PHP section starting in LSWS version 5.3. For control panel environments the PHP is auto detected and if needed can be overridden on a per setup basis. This setup will show you how to manually setup the PHP section to work with the binaries on your system to serve PHP files. PHP operators for beginners and professionals with examples, php file, php session, php date, php array, php form, functions, time, xml, ajax, php mysql, regex ...worth reading for people learning about php and programming: (adding extras <?php ?> to get highlighted code) about the following example in this page manual: Example#1 Logical operators illustratedNovember 8, 2020 ·. Get the new FTR (FSR) truck today at only 330,000 deposit. Upto 95% financing .More power and loading capacity (extra 2 tonnes). Call Kevin at 0725063179 for more details.Apr 5, 2022 · Issue Cannot enable the JSON extension in CloudLinux PHP Selector Environment PHP Selector Solution 1. Validate the alt-php7x-common... PHP Variables. A variable can have a short name (like x and y) or a more descriptive name (age, carname, total_volume). A variable starts with the $ sign, followed by the name of the variable. A variable name must start with a letter or the underscore character. A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9 ...May 30, 2023 · Great if you like your tutorials to the point. 11. Learn-php.org Free Interactive PHP Tutorial. Learn-php.org free interactive PHP tutorial. The unique thing about this PHP tutorial is that it’s a set of interactive exercises that encourage you to try out coding and see if you can get the expected output. Alpine Linux PHP + iconv fix. To use PHP with iconv on Alpine Linux – in a Docker container for example – you need to use the preloadable iconv library, which was previously provided with the gnu-libiconv package, but was removed after Alpine v3.13. After recently rebuilding an Alpine image and running a PHP script that required iconv, I ...Introduction. The Carbon class is inherited from the PHP DateTime class. <?php namespace Carbon ; class Carbon extends \DateTime { // code here } You can see from the code snippet above that the Carbon class is declared in the Carbon namespace. You need to import the namespace to use Carbon without having to provide its fully qualified name ... PHP frameworks offer several benefits, making them a compelling choice for web developers. Firstly, PHP frameworks offer a structured approach to development with pre-built components, streamlining the process, accelerating project completion, and enhancing productivity. Secondly, using a PHP framework can contribute to cost savings.2 Answers. Sorted by: 40. The .so files should be located inside your php extension directory. You can use phpinfo () function to find the location of your php extension directory or you can use php -i from the command line. Example. root@73fa7795de48:/# php -i | grep extension_dir extension_dir => /usr/lib/php/20160303 => /usr/lib/php/20160303. There is also something called a nowdoc which is like a single quote string in PHP, but these won't let you use variables inside them. It is the start of a string that uses the HEREDOC syntax. A third way to delimit strings is the heredoc syntax: <<<. After this operator, an identifier is provided, then a newline.Jan 14, 2021 · If you have permission to SSH into the remote server, use the command line to check the installed PHP version. This method is also useful for checking the PHP version installed locally. 1. Type the PHP command: php -v. 2. The php -v command works on Linux, macOS, Windows, and other supported systems. Its output contains the PHP version number ... PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now ». PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now ».I am working on an a PHP web application and i need to perform some network operations in the request like fetching someone from remote server based on user's request. Is it possible to simulateNov 20, 2009 · It's called assignment by reference, which, to quote the manual, "means that both variables end up pointing at the same data, and nothing is copied anywhere". The only thing that is deprecated with =& is "assigning the result of new by reference" in PHP 5, which might be the source of any confusion. new is automatically assigned by reference ... Nov 20, 2009 · It's called assignment by reference, which, to quote the manual, "means that both variables end up pointing at the same data, and nothing is copied anywhere". The only thing that is deprecated with =& is "assigning the result of new by reference" in PHP 5, which might be the source of any confusion. new is automatically assigned by reference ... Jun 27, 2023 · Welcome. There’s a lot of outdated information on the Web that leads new PHP users astray, propagating bad practices and insecure code. PHP: The Right Way is an easy-to-read, quick reference for PHP popular coding standards, links to authoritative tutorials around the Web, and what the contributors consider to be best practices at present. PHP is an open-source server-side scripting language that many devs use for web development. It is also a general-purpose language that you can use to make lots of projects, including Graphical User Interfaces (GUIs). In this article, I will help you explore the world of PHP so you can learn how it works and its basic features.2 Answers. Sorted by: 40. The .so files should be located inside your php extension directory. You can use phpinfo () function to find the location of your php extension directory or you can use php -i from the command line. Example. root@73fa7795de48:/# php -i | grep extension_dir extension_dir => /usr/lib/php/20160303 => /usr/lib/php/20160303.PHP is a server-side scripting language, which means that a server executes the instructions in a script. Then, the server provides data on request, channels the requests, and organizes the information in a database. When a web server receives a script, it will process the request and send output to a web browser in an HTML format.A session is started with the session_start () function. Session variables are set with the PHP global variable: $_SESSION. Now, let's create a new page called "demo_session1.php". In this page, we start a new PHP session and set some session variables: Aug 1, 2023 · worth reading for people learning about php and programming: (adding extras <?php ?> to get highlighted code) about the following example in this page manual: Example#1 Logical operators illustrated PHP-GTK related documentation is hosted on the PHP-GTK website. Documentation of PEAR and the various packages can be found on a separate server. You can still read a copy of the original PHP/FI 2.0 Manual on our site, which we only host for historical purposes. The same applies to the PHP 3 Manual .PHP has many predefined constants that are often useful. Here, PHP_OS is the one you are looking for. For instance, on my current machine, this code : var_dump(PHP_OS); Gives : string 'Linux' (length=5) You have some examples and comparisons with what the php_uname function can get you on the manual page of php_uname; for instance (quoting):Select Data From a MySQL Database. The SELECT statement is used to select data from one or more tables: SELECT column_name (s) FROM table_name. or we can use the * character to select ALL columns from a table: SELECT * FROM table_name. To learn more about SQL, please visit our SQL tutorial. May 30, 2023 · Great if you like your tutorials to the point. 11. Learn-php.org Free Interactive PHP Tutorial. Learn-php.org free interactive PHP tutorial. The unique thing about this PHP tutorial is that it’s a set of interactive exercises that encourage you to try out coding and see if you can get the expected output. Nov 22, 2012 · PHP has many predefined constants that are often useful. Here, PHP_OS is the one you are looking for. For instance, on my current machine, this code : var_dump(PHP_OS); Gives : string 'Linux' (length=5) You have some examples and comparisons with what the php_uname function can get you on the manual page of php_uname; for instance (quoting): Oct 5, 2010 · @chiccodoro: thanks for the advice, i edited the answer. @ravi: your install of xampp contains two versions of php (4.4.7 and 5.2.4); you must use the 5.2.4 to benefit from the bundled json extension. If you use the 4.2.7 version, either change versions or install the extension following the link i posted – In RHEL 6 I have installed PHP 7.2 via remi repository: # yum --enablerepo=remi-php72 install php Checked which modules are preinstalled with php -m. It is not listed. So I proceed to install it: # yum --enablerepo=remi-php72 php72-php-oci8 Installed: php72-php-oci8.x86_64 0:7.2.17-1.el6.remi Complete! Check modules again and oci8 not yet loaded.PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now ».Introduction. The Carbon class is inherited from the PHP DateTime class. <?php namespace Carbon ; class Carbon extends \DateTime { // code here } You can see from the code snippet above that the Carbon class is declared in the Carbon namespace. You need to import the namespace to use Carbon without having to provide its fully qualified name ... May 29, 2023 · PHP frameworks offer several benefits, making them a compelling choice for web developers. Firstly, PHP frameworks offer a structured approach to development with pre-built components, streamlining the process, accelerating project completion, and enhancing productivity. Secondly, using a PHP framework can contribute to cost savings. Copy. NOTE: This only needs to be done only once, unless your distribution changes or you want to switch from stable to nightly builds. Phalcon installation. To install Phalcon you need to type the following commands in your terminal: sudo apt-get update sudo apt- get install php7 .2 -phalcon. Copy.PHP operators for beginners and professionals with examples, php file, php session, php date, php array, php form, functions, time, xml, ajax, php mysql, regex ...PHP: Hypertext Preprocessor. popular general-purpose scripting language that is especially suited to web development. Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world. What's new in 8.2 Download. 8.2.9 · Changelog · Upgrading.PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now ». I am working on an a PHP web application and i need to perform some network operations in the request like fetching someone from remote server based on user's request. Is it possible to simulate Jun 29, 2020 · June 29, 2020. In June, 1995, Rasmus Lerdorf made an announcement on a Usenet group. You can still read it. Today, twenty five years on, PHP is about as ubiquitous as it could possibly have become ... PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.www.php.net – PHP distribution, tutorials, newsgroups, and more. www.phpfreaks.com - PHP and MySQL tutorials, scripts, forums, and more. www.phpbuilder.com – Collection of PHP resources. Hello World If your web server supports PHP, type this example into a text file called hello.php and access it in your browser byOct 8, 2019 · I am trying to run composer update and I get the following errors: Problem 1 - The requested PHP extension ext-zip * is missing from your system. Install or enable PHP's zip extension. PHP can create, open, read, write, delete, and close files on the server. PHP can collect form data. PHP can send and receive cookies. PHP can add, delete, modify data in your database. PHP can be used to control user-access. PHP can encrypt data. With PHP you are not limited to output HTML. You can output images or PDF files.Enums are defined by a code and a description, where the code can be an integer, a binary value, a short string, or basically anything else you want. The pattern could easily be extended to support orther properties. It asupports value (==) and reference (===) comparisons and works in switch statements. Sep 4, 2023 · 0.01 7649551 US Dollars. 1 USD = 56.6587 PHP. We use the mid-market rate for our Converter. This is for informational purposes only. You won’t receive this rate when sending money. Login to view send rates. Philippine Peso to US Dollar conversion — Last updated Sep 3, 2023, 08:11 UTC. A session is started with the session_start () function. Session variables are set with the PHP global variable: $_SESSION. Now, let's create a new page called "demo_session1.php". In this page, we start a new PHP session and set some session variables: Copy. NOTE: This only needs to be done only once, unless your distribution changes or you want to switch from stable to nightly builds. Phalcon installation. To install Phalcon you need to type the following commands in your terminal: sudo apt-get update sudo apt- get install php7 .2 -phalcon. Copy.Install the PHP drivers for Microsoft SQL Server. I'm using web server nginx, php 7.1 fpm and laravel in Centos 7. I want to install SQL Server following the official installation tutorial for Linux but I'm confused with this command: echo extension=pdo_sqlsrv.so >> `php --ini | grep "Scan for additional .ini files" | sed -e "s|.*:\s*||"`/pdo ...PHP is a server scripting language, and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoft's ASP. Start learning PHP now ». Apr 5, 2022 · Issue Cannot enable the JSON extension in CloudLinux PHP Selector Environment PHP Selector Solution 1. Validate the alt-php7x-common... Mar 15, 2022 · Click on the Advanced system settings link in the left column. From the System Properties window, click on the Advanced tab, and then click on the Environment Variables button at the bottom. Select the Path variable from the System Variables section, and then click on Edit. Add: c:\php to your system path. MySQL is a database system used on the web. MySQL is a database system that runs on a server. MySQL is ideal for both small and large applications. MySQL is very fast, reliable, and easy to use. MySQL uses standard SQL. MySQL compiles on a number of platforms. MySQL is free to download and use. MySQL is developed, distributed, and supported by ... This looks like a comment to older versions of PHP, but tells PHP 8.1 not to raise the deprecation notice. Then, once you don't need to support older versions of PHP, you can fix the return type. What should you do now? Firstly, read the message carefully to find out which method you need to change, and what the correct return type is.PHP Programming at Wikibooks. PHP is a general-purpose scripting language geared towards web development. [9] It was originally created by Danish-Canadian programmer Rasmus Lerdorf in 1993 and released in 1995. [10] [11] The PHP reference implementation is now produced by the PHP Group. [12] PHP was originally an abbreviation of Personal Home ...PHP frameworks offer several benefits, making them a compelling choice for web developers. Firstly, PHP frameworks offer a structured approach to development with pre-built components, streamlining the process, accelerating project completion, and enhancing productivity. Secondly, using a PHP framework can contribute to cost savings.May 5, 2012 · In order to set project specific configuration options, simply add a php.ini file to your project, and then run the built-in server with this flag: php -S localhost:8000 -c php.ini. This is especially helpful for settings that cannot be set at runtime (ini_set ()). up. down. Apr 24, 2023 · PHP is a server-side scripting language, which means that a server executes the instructions in a script. Then, the server provides data on request, channels the requests, and organizes the information in a database. When a web server receives a script, it will process the request and send output to a web browser in an HTML format. I am trying to run composer update and I get the following errors: Problem 1 - The requested PHP extension ext-zip * is missing from your system. Install or enable PHP's zip extension. Probl...Nov 20, 2009 · It's called assignment by reference, which, to quote the manual, "means that both variables end up pointing at the same data, and nothing is copied anywhere". The only thing that is deprecated with =& is "assigning the result of new by reference" in PHP 5, which might be the source of any confusion. new is automatically assigned by reference ... Introduction. The Carbon class is inherited from the PHP DateTime class. <?php namespace Carbon ; class Carbon extends \DateTime { // code here } You can see from the code snippet above that the Carbon class is declared in the Carbon namespace. You need to import the namespace to use Carbon without having to provide its fully qualified name ... PHP-GTK related documentation is hosted on the PHP-GTK website. Documentation of PEAR and the various packages can be found on a separate server. You can still read a copy of the original PHP/FI 2.0 Manual on our site, which we only host for historical purposes. The same applies to the PHP 3 Manual .15. According to the article How to Get Current Datetime (NOW) with PHP, there are two common ways to get the current date. To get current datetime (now) with PHP, you can use the date class with any PHP version, or better the datetime class with PHP >= 5.2. Various date format expressions are available here.Jun 27, 2023 · Welcome. There’s a lot of outdated information on the Web that leads new PHP users astray, propagating bad practices and insecure code. PHP: The Right Way is an easy-to-read, quick reference for PHP popular coding standards, links to authoritative tutorials around the Web, and what the contributors consider to be best practices at present. PHP: Hypertext Preprocessor. popular general-purpose scripting language that is especially suited to web development. Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world. What's new in 8.2 Download. 8.2.9 · Changelog · Upgrading.Aug 30, 2021 · PHP is an open-source server-side scripting language that many devs use for web development. It is also a general-purpose language that you can use to make lots of projects, including Graphical User Interfaces (GUIs). In this article, I will help you explore the world of PHP so you can learn how it works and its basic features. Jul 3, 2019 · Install the PHP drivers for Microsoft SQL Server. I'm using web server nginx, php 7.1 fpm and laravel in Centos 7. I want to install SQL Server following the official installation tutorial for Linux but I'm confused with this command: echo extension=pdo_sqlsrv.so >> `php --ini | grep "Scan for additional .ini files" | sed -e "s|.*:\s*||"`/pdo ... strpos () - Search For a Text Within a String. The PHP strpos () function searches for a specific text within a string. If a match is found, the function returns the character position of the first match. If no match is found, it will return FALSE. Strings. ¶. A string is a series of characters, where a character is the same as a byte. This means that PHP only supports a 256-character set, and hence does not offer native Unicode support. See details of the string type . Note: On 32-bit builds, a string can be as large as up to 2GB (2147483647 bytes maximum)strpos () - Search For a Text Within a String. The PHP strpos () function searches for a specific text within a string. If a match is found, the function returns the character position of the first match. If no match is found, it will return FALSE.Aug 1, 2023 · 2 years ago. In php there are 3 types of comments. 1.single line c++ style comment (//) 2.single line Unix shell stype comment (#) 3.multi line c style comment (/*/) single or multi line comment comes to the end of the line or come first to the current block of php code. Solution: If you want to have a function that uses references to modify a member of your object, your object should never pass the member to the function directly. It should first make a copy of the member. Then give that copy to the function. Then copy the new value of that copy in to your original object member.Select and Filter Data From a MySQL Database. The WHERE clause is used to filter records. The WHERE clause is used to extract only those records that fulfill a specified condition. SELECT column_name (s) FROM table_name WHERE column_name operator value. To learn more about SQL, please visit our SQL tutorial. Setting up PHP on LiteSpeed Web Server is simple with the induction of the PHP section starting in LSWS version 5.3. For control panel environments the PHP is auto detected and if needed can be overridden on a per setup basis. This setup will show you how to manually setup the PHP section to work with the binaries on your system to serve PHP files. PHP is an open-source server-side scripting language that many devs use for web development. It is also a general-purpose language that you can use to make lots of projects, including Graphical User Interfaces (GUIs). In this article, I will help you explore the world of PHP so you can learn how it works and its basic features.Mar 15, 2022 · Click on the Advanced system settings link in the left column. From the System Properties window, click on the Advanced tab, and then click on the Environment Variables button at the bottom. Select the Path variable from the System Variables section, and then click on Edit. Add: c:\php to your system path. PHP is a server-side scripting language designed specifically for web development. It is open-source which means it is free to download and use. It is very simple to learn and use. The files have the extension “.php”. Rasmus Lerdorf inspired the first version of PHP and participated in the later versions. It is an interpreted language and ...Part of PHP Collective. 8. So I've recently became very interested in machine learning, and have been using tensorflow (python) in some of my projects at work. However, I've now found a use for digit classification in one of my web projects which is all written in PHP for server-side code. Ideally, I'd like to be able to upload a picture via a ...Wikipedia lists 40 PHP frameworks, but some of those are better described as content management systems, and undoubtedly there are many more. Early PHP frameworks include PHPlib, Horde, and Pear. Most of the big names now launched in 2005 or later. Here are some of the best PHP frameworks in use today.2 Answers. Sorted by: 40. The .so files should be located inside your php extension directory. You can use phpinfo () function to find the location of your php extension directory or you can use php -i from the command line. Example. root@73fa7795de48:/# php -i | grep extension_dir extension_dir => /usr/lib/php/20160303 => /usr/lib/php/20160303. Example Get your own PHP Server. When the user fills out the form above and clicks the submit button, the form data is sent for processing to a PHP file named "welcome.php". The form data is sent with the HTTP POST method. To display the submitted data you could simply echo all the variables. The "welcome.php" looks like this:Oct 30, 2019 · Forward compatibility with PHP 7.4 #32. lcobucci closed this as completed in #32 on Oct 30, 2019. Axent96 mentioned this issue on Jan 28, 2020. Now we have the phpredis extension installed. Copy and paste the content of “modules” folder to the php extension directory or use the following command in terminal. sudo cp modules/redis.so {php-config–extension-dir} Now, we need to configure php to use it. Add the following lines in php.ini for your php installation.I am working on an a PHP web application and i need to perform some network operations in the request like fetching someone from remote server based on user's request. Is it possible to simulate
Enums are defined by a code and a description, where the code can be an integer, a binary value, a short string, or basically anything else you want. The pattern could easily be extended to support orther properties. It asupports value (==) and reference (===) comparisons and works in switch statements. . M15 sbs bus schedule pdf
Dec 9, 2016 · To find the real php.ini that you need to change go to Terminal and run the following: php -i | grep "php.ini". You'll get a path like this: Configuration File (php.ini) Path => /etc. When you go to that directory you may find that you, in fact, have no php.ini file at all but instead have something named php.ini.default !!! Introduction. The Carbon class is inherited from the PHP DateTime class. <?php namespace Carbon ; class Carbon extends \DateTime { // code here } You can see from the code snippet above that the Carbon class is declared in the Carbon namespace. You need to import the namespace to use Carbon without having to provide its fully qualified name ... The PHP concatenation operator (.) is used to combine two string values to create one string. .=. Concatenation assignment. PHP has many predefined constants that are often useful. Here, PHP_OS is the one you are looking for. For instance, on my current machine, this code : var_dump(PHP_OS); Gives : string 'Linux' (length=5) You have some examples and comparisons with what the php_uname function can get you on the manual page of php_uname; for instance (quoting):Strings. ¶. A string is a series of characters, where a character is the same as a byte. This means that PHP only supports a 256-character set, and hence does not offer native Unicode support. See details of the string type . Note: On 32-bit builds, a string can be as large as up to 2GB (2147483647 bytes maximum)Nov 22, 2012 · PHP has many predefined constants that are often useful. Here, PHP_OS is the one you are looking for. For instance, on my current machine, this code : var_dump(PHP_OS); Gives : string 'Linux' (length=5) You have some examples and comparisons with what the php_uname function can get you on the manual page of php_uname; for instance (quoting): Dec 1, 2019 · PHP is a server-side scripting language created in 1995 by Rasmus Lerdorf. PHP is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML. What is PHP used for? As of October 2018, PHP is used on 80% of websites whose server-side language is known. It is typically ... Nov 20, 2009 · It's called assignment by reference, which, to quote the manual, "means that both variables end up pointing at the same data, and nothing is copied anywhere". The only thing that is deprecated with =& is "assigning the result of new by reference" in PHP 5, which might be the source of any confusion. new is automatically assigned by reference ... Note that the ; is redundant; as the answers suggest this short-tag expands to an echo with a semicolon added to the end, as per the php documents. – not-just-yeti Oct 5, 2015 at 1:25I am working on an a PHP web application and i need to perform some network operations in the request like fetching someone from remote server based on user's request. Is it possible to simulate Select Data From a MySQL Database. The SELECT statement is used to select data from one or more tables: SELECT column_name (s) FROM table_name. or we can use the * character to select ALL columns from a table: SELECT * FROM table_name. To learn more about SQL, please visit our SQL tutorial.May 29, 2023 · PHP frameworks offer several benefits, making them a compelling choice for web developers. Firstly, PHP frameworks offer a structured approach to development with pre-built components, streamlining the process, accelerating project completion, and enhancing productivity. Secondly, using a PHP framework can contribute to cost savings. The PHP concatenation operator (.) is used to combine two string values to create one string. .=. Concatenation assignment.Example Get your own PHP Server. When the user fills out the form above and clicks the submit button, the form data is sent for processing to a PHP file named "welcome.php". The form data is sent with the HTTP POST method. To display the submitted data you could simply echo all the variables. The "welcome.php" looks like this: PHP Variables. A variable can have a short name (like x and y) or a more descriptive name (age, carname, total_volume). A variable starts with the $ sign, followed by the name of the variable. A variable name must start with a letter or the underscore character. A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9 ...Oct 16, 2015 at 18:09. Add a comment. 0. You have to put this line ( extension=mongo.so) inside (at the end worked for me) your php.ini file. If you don't know where your php.ini file is, you can display its location using this following line : echo phpinfo (); (from a php page of your project). Look at the line "Loaded Configuration File".Oct 5, 2010 · @chiccodoro: thanks for the advice, i edited the answer. @ravi: your install of xampp contains two versions of php (4.4.7 and 5.2.4); you must use the 5.2.4 to benefit from the bundled json extension. If you use the 4.2.7 version, either change versions or install the extension following the link i posted – .
