1) Web server passes the requested document to PHP interpreter, which validates and processes PHP code in it, then the server reads the response from PHP interpreter and returns the resulting response to client.
Full Answer
After Apache decides that is is a PHP file, it gives it to the PHP interpreter. When PHP receives the file it reads through it and executes any PHP code it can find. After it is done with the file, the PHP interpreter gives the output of the code, if any, back to Apache.
PHP can be run as a webserver module, as a CGI application or from the command line as a CLI script. There is both a function and a PHP constant which allows you to determine whether PHP is being run via HTTP or CLI. This post looks at the function and constant and the possible values, as determined in the PHP 5.2.5 source code.
The user's web browser receives the response from the server, and renders the web page on a computer or device. As you can see, PHP interacts with a web server in a very real way. The actual request process is very simple, and one of the reasons that PHP is so well suited for web application development.
Apache receives the output from PHP and sends it back over the Internet to a user's web browser. This is called the `web response`. The user's web browser receives the response from the server, and renders the web page on a computer or device. As you can see, PHP interacts with a web server in a very real way.
if you want always include, require, open files using some 'root' folder based path you may may put file '.htroot' in 'root' folder and use this.
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See also Remote files, fopen() and file() for related information.. Handling Returns: include returns FALSE on failure and raises a warning. Successful includes, unless overridden by the included file, return 1.It is possible to execute a return statement inside an included file in order to terminate processing in that file and return to the script which called it.
You would have to configure your webserver to utilize PHP as handler for .html files. This is typically done by modifying your with AddHandler to include .html along with .php.. Note that this could have a performance impact as this would cause ALL .html files to be run through PHP handler even if there is no PHP involved.
After Apache decides that is is a PHP file, it gives it to the PHP interpreter. When PHP receives the file it reads through it and executes any PHP code it can find. After it is done with the file, the PHP interpreter gives the output of the code, if any, back to Apache. When Apache gets the output back from PHP, it sends that output back to a browser which renders it to the screen.
Apache receives the output from PHP and sends it back over the Internet to a user's web browser. This is called the `web response`. The user's web browser receives the response from the server, and renders the web page on a computer or device. As you can see, PHP interacts with a web server in a very real way.
PHP is an interpreted language. This means that you will write code statements (lines of code) and when a page is requested, the PHP interpreter will load your PHP code, parse it and then execute it. This differs from other languages, such as Java or C#, where the source code is compiled and then executed.
So what exactly is happening when a user types in the URL http://example.org? When a user types in http://example.org in a Web client (a browser, for instance), the client issues a GET request to the server (let's assume that we are both using Apache). When Apache gets this request, it looks for a file named index.php (or index.html, remember the directory indexes from earlier?). If a file named index.php is found, Apache essentially says "Hey, this is a PHP file because it has the .php extension. I am going to give this to the PHP interpreter".
Most PHP and web server setups let you use a file named index.php just as you would use an index.html file. However, make sure you know which one takes priority so you don't get unexpected results (usually index.php ).
Some of the largest companies and organizations from around the world utilize PHP for their operations (some of them you probably use every single day). A large amount of web sites and applications are powered by PHP; therefore an understanding of the PHP language is mandatory to fully understand and accept the power behind popular frameworks (such as Laravel, CodeIgniter or Symfony), and how popular websites and applications may be handling user's data.
PHP is written as standard text files with the .php extension. PHP files are often saved within a folder in a web server's public directory (or a web root directory). On most systems this will either be named public or public_html. For example, if a file was saved as index.php in a web root directory, a user could access it by typing http://www.example.org or http://www.example.org/index.php.
So, if you want the execution to go on and show users the output, even if the include file is missing, use the include statement. Otherwise, in case of FrameWork, CMS, or a complex PHP application coding, always use the require statement to include a key file to the flow of execution. This will help avoid compromising your application's security and integrity, just in-case one key file is accidentally missing.
PHP include vs. require. The require statement is also used to include a file into the PHP code. However, there is one big difference between include and require; when a file is included with the include statement and PHP cannot find it, the script will continue to execute: Example. <html>.
Including files saves a lot of work. This means that you can create a standard header, footer, or menu file for all your web pages. Then, when the header needs to be updated, you can only update the header include file.
PHP. Include Files. The include (or require) statement takes all the text/code/markup that exists in the specified file and copies it into the file that uses the include statement. Including files is very useful when you want to include the same PHP, HTML, or text on multiple pages of a website.
All pages in the Web site should use this menu file. Here is how it can be done (we are using a <div> element so that the menu easily can be styled with CSS later):
Use require when the file is required by the application.
Including files is very useful when you want to include the same PHP, HTML, or text on multiple pages of a website.
Making statements based on opinion; back them up with references or personal experience.
It's worth noting that if you use some sort of MVC or front controller method then "SCRIPT_NAME" will return the script that provided the include, so if everything runs through index.php example this is what will return - in this case $_SERVER['REQUEST_URI'] seems to do the trick.
No, the question is in no way asking about the HTTP referrer. That would (when set) indicate what page the user was previously on that referred them to this page. The question is asking for the file currently being requested, and the accepted answer demonstrates it's $_SERVER['SCRIPT_NAME'].
And these return values are true even in included files . See my answer below before answering, I think I've found what I was looking for.
The PHP function php_sapi_name () takes no arguments returns the interface as a lower case string.
The PHP_SAPI constant provides the same value as the php_sapi_name () function.
The values returned by php_sapi_name () and PHP_SAPI can be found in the source code. Unfortunately they are not documented in the PHP documentation, other than in a user comment. To work out all the possible current values I downloaded the latest PHP source code (5.2.5 as at the time of this post) and had a look.
If PHP is being run as a CLI (command line interface) application, then the value returned by php_sapi_name () and PHP_SAPI will be "cli". So you could do something like this:
So, if you want the execution to go on and show users the output, even if the include file is missing, use the include statement. Otherwise, in case of FrameWork, CMS, or a complex PHP application coding, always use the require statement to include a key file to the flow of execution. This will help avoid compromising your application's security and integrity, just in-case one key file is accidentally missing.
PHP include vs. require. The require statement is also used to include a file into the PHP code. However, there is one big difference between include and require; when a file is included with the include statement and PHP cannot find it, the script will continue to execute: Example. <html>.
Including files saves a lot of work. This means that you can create a standard header, footer, or menu file for all your web pages. Then, when the header needs to be updated, you can only update the header include file.
PHP. Include Files. The include (or require) statement takes all the text/code/markup that exists in the specified file and copies it into the file that uses the include statement. Including files is very useful when you want to include the same PHP, HTML, or text on multiple pages of a website.
All pages in the Web site should use this menu file. Here is how it can be done (we are using a <div> element so that the menu easily can be styled with CSS later):
Use require when the file is required by the application.
Including files is very useful when you want to include the same PHP, HTML, or text on multiple pages of a website.