PHP Modify Variable - php

Question

There is a PHP file called test2.php,the code is in follow:
<?php
$data=array(
'name' => 'jack',
'age' => 8,
);
?>
I want to modify the $data in anoher php file called test1.php,
but i find that if only use:
require_once "./test2.php";
$data['age']=10;
echo $data['age'];
Although the output is 10,but $data in test2.php dosen't change.
I want to know how to edit a PHP file in anoher PHP file.

Answer 1

To change the contents of test2.php, you need to use a code editor (or... thru file_put_contents (make sure your file is writable), or use a database approach to store the data values, etc.)
However, if you just want to change the value of the age element of the $data array thru programming, then you can use session variables to do what you want
So change test2.php to
<?php
session_start();
if (!isset($_SESSION["data"])) {
$_SESSION["data"]=array(
'name' => 'jack',
'age' => 8,
);
}
echo $_SESSION["data"]["age"];
?>
and use the following as test1.php
<?php
session_start();
//require_once "./test2.php";
//$data['age']=10;
//echo $data['age'];
$_SESSION["data"]["age"]=10;
echo "Data changed, please visit test2.php to see the effect";
?>
Please try these steps:
visit the test2.php and see the value of $_SESSION["data"]["age"] echoed
visit the test1.php (to change the data)
visit test2.php and see what happens