Problem statement – I need to create a PHP class (MyClass.php) that can check for the updated version from remote server and once we click on check for update function call, Class should update itself (definition) from updated remote code and reinitialize itself.
We need to have following prerequisites to do this, Below is proof of concept of this.
- Server there script/class check for new version and updated code
- version.txt file in server should have 1.1 or version higher than 1.0 mentioned in class
- MyClass.txt file in server should have the same version that’s defined in version.txt file in server.
MyClass.php
<?php
class MyClass
{
private $version;
public function __construct()
{
$this->version = 1.0;
}
public function checkForUpdates()
{
// Get the latest version number from a remote file
$latestVersion = file_get_contents('https://www.yourwebsite.com/version.txt');
// Compare the latest version to the current version
if ($latestVersion > $this->version) {
// Update the class code
$this->update();
}
}
private function update()
{
// Get the updated code from a remote file
$updatedCode = file_get_contents('https://www.yourwebsite.com/MyClass.txt');
// Overwrite the current class code with the updated code
file_put_contents(__FILE__, $updatedCode);
// Refresh the class definition
require_once __FILE__;
}
}
$obj = new MyClass();
$obj->checkForUpdates();version.txt
1.1MyClass.txt
<?php
class MyClass
{
private $version;
private $author;
public function __construct()
{
$this->version = 1.1;
$this->author = "Kapil";
}
public function checkForUpdates()
{
// Get the latest version number from a remote file
$latestVersion = file_get_contents('https://www.yourwebsite.com/version.txt');
// Compare the latest version to the current version
if ($latestVersion > $this->version) {
// Update the class code
$this->update();
}
}
private function update()
{
// Get the updated code from a remote file
$updatedCode = file_get_contents('https://www.yourwebsite.com/MyClass.txt');
// Overwrite the current class code with the updated code
file_put_contents(__FILE__, $updatedCode);
// Refresh the class definition
require_once __FILE__;
}
}
$obj = new MyClass();
$obj->checkForUpdates();