Method1. Just put <?php your PHP code ?> with HTML
Method2. Use one of following functions:
<?php
require('folder/file.php');
require_once('folder/file.php');
include('folder/file.php');
include_once('folder/file.php');
?>
The difference between require,include and require_once,include_once is when you use include_once or require_once, the file will be included only once in a php system. For example: you have a file named hello.php witch only has a single line of code to echo a message to say hello.
<?php
echo "hello.php";
?>
and you have a file named include.php witch is attempt to include the “hello.php” file.
<?php
include('hello.php');
include('hello.php');
include('hello.php'); //You will get three times echo of "hello"
?>
if you have a file include_once.php, instead of include.php, to include the “hello.php” file.
<?php
include_once('hello.php');
include_once('hello.php');
include_once('hello.php'); //You will get only one time echo of "hello"
?>


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