We can write php extension is many way...
.php , .php5, .php4
PHP files extension is .php
Assuming you meant windows the OS then you should write it in a text editor such as notepad and save it with the extension .php. You then need to install a web server with PHP installed such as WAMP or XAMPP to run it.
you can put the connection file 1 level above your website's directory, and use random names, like 2134j12h5kh35.php but really, if it's extension is .php, and in the unlikely event that someone knows where it is, the server will process it anyway and unless you echo your connection details for some strange reason, nothing will be displayed.
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PHP files extension is .php
A file whose extension is "*.php" are typically interpreted by the PHP language. (php.net)
The file extension for PHP is .php
No, PHP is text file with .php extension.
.php
PHP code can be stored in any kind of file -- the extension of the file indicates what said file contains, but may not necessarily be true. The "php" extension is used to indicate PHP which is meant for execution and presentation.
You can use the GD extension for PHP to edit image files.
.tpl is a file extension used by Smarty.
.htm, .html or .php
with just plain HTML its .HTML, but if you want to use a server side language like php it will be .php
This means that the curl (Client URL) module is missing or has not been enabled.First - check your PHP extension folder for the curl module file (php_curl.dll in Windows). If it's missing, download it (a quick google search should reveal several places to retrieve the file) and place it in your PHP extension folde.Next, open your PHP.ini file and find the line:;extension=php_curl.dll... then remove the ;extension=php_curl.dllRestart apache and you should be right to go.Hope that helps.
PECL stands for PHP Extension Community Library and it is a repository for extensions which add additional functionality to the core PHP installation. An example would be the extension APC (Alternative PHP Cache) which allows you to setup a cache which optimizes the serving of intermediate code. When using a server, you can install the PECL repository and call upon it to download extensions as you require them.