How to maintain inclusion references while loading a new form on PHP?

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referencesmaintain
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For more information on how PHP handles including files and the include path, see the documentation for include_path. , The include expression includes and evaluates the specified file. , Another way to "include" a PHP file into a variable is to capture the output by using the Output Control Functions with include. For example: , In order to automatically include files within scripts, see also the auto_prepend_file and auto_append_file configuration options in php.ini.

(PHP 4, PHP 5, PHP 7, PHP 8)

The include expression includes and evaluates the specified file.

include
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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.,The require statement is also used to include a file into the PHP code.,To include the footer file in a page, use the include statement:,Then, if we include the "vars.php" file, the variables can be used in the calling file:

< ? php; ? >
72%

When an input element’s type attribute is in the File Upload state, the rules in this section apply.,When an input element’s type attribute is in the URL state, the rules in this section apply.,When an input element’s type attribute is in the Color state, the rules in this section apply.,The input element b’s type attribute is in the Radio Button state.

[OverrideBuiltins]
interface HTMLFormElement: HTMLElement {
   attribute DOMString acceptCharset;
   attribute DOMString action;
   attribute DOMString autocomplete;
   attribute DOMString enctype;
   attribute DOMString encoding;
   attribute DOMString method;
   attribute DOMString name;
   attribute boolean noValidate;
   attribute DOMString target;

   [SameObject] readonly attribute HTMLFormControlsCollection elements;
   readonly attribute unsigned long length;
   getter Element(unsigned long index);
   getter(RadioNodeList or Element)(DOMString name);

   void submit();
   void reset();
   boolean checkValidity();
   boolean reportValidity();
};
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Example of an file Inclusion vulnerability in PHP,Example of an File Inclusion vulnerability in JSP,File inclusion in PHPExample of an file Inclusion vulnerability in PHP,Example of an File Include vulnerability in SSI

Local File Inclusion (LFI) Example

/**
* Get the filename from a GET input
* Example - http://example-website.com/?file=filename.php
*/
$file = $_GET[‘file’];

/*** Get the filename from a GET input* Example - http://example-website.com/?file=filename.php*/
$file = $_GET[‘file’];
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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 the present time.,This is bad practice for all sorts of reasons, mainly that it’s hard to debug, hard to test, hard to read and it is going to output a lot of fields if you don’t put a limit on there.,Another option is to use the PHP Coding Standards Fixer. It will show which kind of errors the code structure had before it fixed them.,Right now PHP does not support Unicode at a low level. There are ways to ensure that UTF-8 strings are processed OK, but it’s not easy, and it requires digging in to almost all levels of the web app, from HTML to SQL to PHP. We’ll aim for a brief, practical summary.

> php - S localhost: 8000
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Programming languages created in 1995,Open-source software development,PHP is a general-purpose scripting language geared towards web development.[7] It was originally created by Danish-Canadian programmer Rasmus Lerdorf in 1994.[8] The PHP reference implementation is now produced by The PHP Group.[9] PHP originally stood for Personal Home Page,[8] but it now stands for the recursive initialism PHP: Hypertext Preprocessor.[10] ,Text-oriented programming languages

<!--include /text/header.html-->

<!--getenv HTTP_USER_AGENT-->
<!--if substr $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-->
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The include() function takes all the text in a specified file and copies it into the file that uses the include function. If there is any problem in loading a file then the include() function generates a warning but the script will continue execution.,The require() function takes all the text in a specified file and copies it into the file that uses the include function. If there is any problem in loading a file then the require() function generates a fatal error and halt the execution of the script.,So there is no difference in require() and include() except they handle error conditions. It is recommended to use the require() function instead of include(), because scripts should not continue executing if files are missing or misnamed.,You can include the content of a PHP file into another PHP file before the server executes it. There are two PHP functions which can be used to included one PHP file into another PHP file.

Assume you want to create a common menu for your website. Then create a file menu.php with the following content.

<a href="http://www.tutorialspoint.com/index.htm">Home</a> -
<a href="http://www.tutorialspoint.com/ebxml">ebXML</a> -
<a href="http://www.tutorialspoint.com/ajax">AJAX</a> -
<a href="http://www.tutorialspoint.com/perl">PERL</a> <br />
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