Implementing Proxy Design Pattern in PHP
implement the Proxy Design Pattern in PHP. Discover its benefits for lazy loading, access control, and resource management.
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<?php
echo '<pre>';
// Subject Interface
interface Image
{
public function display(): void;
}
// RealSubject
class RealImage implements Image
{
private string $filename;
public function __construct(string $filename)
{
$this->filename = $filename;
$this->loadImageFromDisk();
}
private function loadImageFromDisk(): void
{
echo "Loading " . $this->filename . "\n";
}
public function display(): void
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settingsPHP Version
panorama_fish_eye
7.2
panorama_fish_eye
7.4
task_alt
8.0
panorama_fish_eye
8.1
panorama_fish_eye
8.2
panorama_fish_eye
8.3
panorama_fish_eye
8.4
panorama_fish_eye
8.5
terminal
Execution Result
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article
Description
Implementing Proxy Design Pattern in PHP
The Proxy Design Pattern is a structural pattern that acts as a surrogate or placeholder for another object to control access to it. This pattern is particularly useful for lazy loading, access control, logging, and more.
Key Components
- Subject Interface: Defines the common interface for both the RealSubject and the Proxy.
- RealSubject: The actual object that will be represented. This object contains the business logic and data.
- Proxy: Holds a reference to the RealSubject and controls its access, often allowing for lazy instantiation.
Example Implementation
Here’s how the Proxy Design Pattern can be implemented in PHP.
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