How to call a function in PHP - php

Question

I have been following some courses on how to create a session object, which has worked out fine, If I place the complete code onto a PHP file, all works great!
What I would like to do is place this in another module (PHP file) and just use one line (or equivalent) to do this, such as GetSessiondata();
<?php
$SqlCon = new DBConnect("Databaselocation","Database","Usr","Pss");
$UserDataSet = $SqlCon->GetUserList("SELECT * FROM Users");
echo "<br /><br />";
echo "<br /><br />";
if ($UserDataSet)
{
echo "<table>" . "<thead>" ;
echo "<tr><th scope=\"col\">" . 'Usr' . "</th>";
echo "<th scope=\"col\">" . 'Lvl' . "</th></tr></thead><tbody>";
foreach($UserDataSet as $data)
{
echo "<td>" .$data->GetUsrName()."</td>" ;
echo "<td>" .$data->GetUsrLevel()."</td></tr>" ;
}
echo "<tfoot><tr><th scope=\"row\" colspan=\"2\">" . 'Total Users = 2' . "</th></tr></tfoot>";
echo "</tbody>" . "</table>" ;
}
else
echo "Nothing Found in DB!";
?>

Answer 1

You need to "require" your file, where you want to use it.
Here an example
Working with classes:
Whatever.php
class Whatever {
public function __construct() {
// Ever when the code is instantiated, this will be called too!
}
public function myMethod() {
echo 'hello';
}
}
index.php
require_once('./Whatever.php');
$whatever = new Whatever();
$whatever->myMethod();
Without classes:
functions.php:
function whatever(){ echo 'hello'; }
index.php:
require_once('./functions.php');
whatever();
Read more:
Require: http://php.net/manual/es/function.require.php
Require_once: http://php.net/manual/es/function.require-once.php

Answer 2

My advise is to split this refactoring process into 2 steps:
1.Wrap your code into function:
function someFunctionName() {
$SqlCon = new DBConnect("Databaselocation","Database","Usr","Pss");
$UserDataSet = $SqlCon->GetUserList("SELECT * FROM Users");
echo "<br /><br />";
echo "<br /><br />";
if ($UserDataSet)
{
echo "<table>" . "<thead>" ;
echo "<tr><th scope=\"col\">" . 'Usr' . "</th>";
echo "<th scope=\"col\">" . 'Lvl' . "</th></tr></thead><tbody>";
foreach($UserDataSet as $data)
{
echo "<td>" .$data->GetUsrName()."</td>" ;
echo "<td>" .$data->GetUsrLevel()."</td></tr>" ;
}
echo "<tfoot><tr><th scope=\"row\" colspan=\"2\">" . 'Total Users = 2' . "</th></tr></tfoot>";
echo "</tbody>" . "</table>" ;
}
else
echo "Nothing Found in DB!";
}
// and call your function
someFunctionName();
2.Create another file, let's say functions.php, in the same dir and move function into it. Now you can require this file inside your php page:
require_once 'functions.php';
// and call your function
someFunctionName();

Answer 3

I think you are looking for include
Save your file, and then you can include it in another file as:
include 'my_file.php';
You can also use:
include_once
require
require_once
Read the documentation for further explanations or see this question