How to link a html page in php

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.


PHP include and require Statements

It is possible to insert the content of one PHP file into another PHP file (before the server executes it), with the include or require statement.

The include and require statements are identical, except upon failure:

  • require will produce a fatal error (E_COMPILE_ERROR) and stop the script
  • include will only produce a warning (E_WARNING) and the script will continue

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.

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.

Syntax

include 'filename';

or

require 'filename';


PHP include Examples

Example 1

Assume we have a standard footer file called "footer.php", that looks like this:

<?php
echo "<p>Copyright &copy; 1999-" . date("Y") . " W3Schools.com</p>";
?>

To include the footer file in a page, use the include statement:

Example

<html>
<body>

<h2>Welcome to my home page!</h2>
<p>Some text.</p>
<p>Some more text.</p>
<?php include 'footer.php';?>

</body>
</html>

Run example »



Example 2

Assume we have a standard menu file called "menu.php":

<?php
echo '<a href="/default.asp">Home</a> -
<a href="/html/default.asp">HTML Tutorial</a> -
<a href="/css/default.asp">CSS Tutorial</a> -
<a href="/js/default.asp">JavaScript Tutorial</a> -
<a href="default.asp">PHP Tutorial</a>';
?>

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):

Example

<html>
<body>

<div class="menu">
<?php include 'menu.php';?>
</div>

<h2>Welcome to my home page!</h2>
<p>Some text.</p>
<p>Some more text.</p>

</body>
</html>

Run example »


Example 3

Assume we have a file called "vars.php", with some variables defined:

<?php
$color='red';
$car='BMW';
?>

Then, if we include the "vars.php" file, the variables can be used in the calling file:

Example

<html>
<body>

<h2>Welcome to my home page!</h2>
<?php include 'vars.php';
echo "I have a $color $car.";
?>

</body>
</html>

Run example »


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>
<body>

<h2>Welcome to my home page!</h2>
<?php include 'noFileExists.php';
echo "I have a $color $car.";
?>

</body>
</html>

Run example »

If we do the same example using the require statement, the echo statement will not be executed because the script execution dies after the require statement returned a fatal error:

Example

<html>
<body>

<h2>Welcome to my home page!</h2>
<?php require 'noFileExists.php';
echo "I have a $color $car.";
?>

</body>
</html>

Run example »

Use require when the file is required by the application.

Use include when the file is not required and application should continue when file is not found.


PHP Exercises



I just converted some of my HTML pages to PHP pages, and I'm not that familiar with PHP. In my HTML pages, assuming it's just a static web app, I can link to another page quite simply by playing the following anchor on the page:

<a href="go-to-this-page.html">This is a link</a>

So, after converting the pages to PHP in order to make sure that I can template and include templates a bit easier and faster, I don't know how to include these links.

For example, say I have two pages, index.php, and page2.php. How would I create an anchor link to this page?

<a href="??????">This is a link</a>

For this you need to follow the following steps:.
Step 1: Filter your HTML form requirements for your contact us web page. ... .
Step 2: Create a database and a table in MySQL. ... .
Step 3: Create HTML form for connecting to database. ... .
Step 4: Create a PHP page to save data from HTML form to your MySQL database. ... .
Step 5: All done!.
If you want to run your HTML files as PHP, you can tell the server to run your . html files as PHP files, but it's a much better idea to put your mixed PHP and HTML code into a file with the . php extension.
Answer: Use the PHP header() Function You can simply use the PHP header() function to redirect a user to a different page. The PHP code in the following example will redirect the user from the page in which it is placed to the URL http://www.example.com/another-page.php . You can also specify relative URLs.

How can I add HTML code in PHP file?

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.