This behaves like the Null Coalescing operator ?, except that ? requires the left operand to be exactly null while ?: is often referred to as Elvis operator. Expression expr1 ?: expr3 returns expr1 if expr1Įvaluates to TRUE, and expr3 otherwise. It is possible to leave out the middle part of the ternary operator. The expression (expr1) ? (expr2) : (expr3) evaluates to expr2 if expr1evaluates to true, and expr3 if expr1 $action would contain the string 'default' if empty($_POST) evaluates to true. Since we are setting $value to the result of our ternary operator itĮxample: $action = empty($_POST) ? 'default' : $_POST If the operator is evaluated as true, the value in the first block will be returned (), else the value in the The ternary operator can be thought of as an inline if statement. ![]() You also need to restart your web server and php in order to complete the installation of a specific extension. For example, for enabling mysql extension, you have to change extension = php_mysql.dll to extension = php_mysql.dll in your php.ini file. For example, If you are using PHP 5.0.3, and you have installed php in c:\php, then you have to set extension_dir = C:\php\ext in your php.ini file.Īfter downloading the files needed, you have to open php.ini and enable a line pointing to an extension in question.įor enabling extensions, you have to uncomment a line in your php.ini file. You need to change the setting of extension dir in php.ini file. How do you configure an extension on Windows? dll file which you can download from php.net. In Windows, extensions come in the form of a. But many need to be obtained separately from php.net. Many extensions are available out of the box in the PHP installer downloadedįrom php.net or in the. for using mysql you need mysql extension of PHP). Run this file on your web server and if you get an output like this:Ī PHP extension is a piece of code which is not part of the core PHP and you need it to explore certain functionalities msi Windows installer file and follow the installation wizard.Ĭreate a php file containing code and save it as test.php. Install PHP on Windows using Windows installer Then Click on New under system variable and add PHPRC against Variable name and D:\php against Variable value. In the Variable value, go to the end of the list and put a semicolon, then add D:\php D:\php\ext assuming D:\php is the location of your php installation. Now you open Environment Variables (M圜omputer -> System Properties -> Environment Variables), under system variables, select Path and click Edit, if you have installed php in php folder of D drive, setting will be extension_dir=D:\php. Open the file php.ini with any text editor and find extension_dir within the file.Ĭhange the extension directory, i.e. c:\php or d:\php).Įnter php folder and rename the file php.ini-recommonded to php.ini. Įxtract the downloaded file to php folder which must be created at the root of any of your windows drives (e.g. You have to download zipped binary version of PHP from. You can upgrade to a higher version of PHP from an existing version.Besides full installation, you can install php extensions on an existing installation of PHP. ![]() ![]() ![]() windows installer for php to install php. You can install php on windows manually.Prerequisite and running on your Windows system, else you will not be able to run PHP Scripts.Īlternatively, you can install WAMP server or AMPPS server to install PHP, MySQL, and Apache Web Server on your Windows machine.
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