PHP

constructor in php

<?php
class Car {
  public $name;
  public $color;

  function __construct($name) {
    $this->name = $name;
  }
  function get_name() {
    return $this->name;
  }
  function get_color() {
    return $this->color;
  }
}
$mycar = new Car("Audi");
$mycar->color = "red";

echo $mycar->get_name(); // Audi
echo $mycar->get_color(); // red

php __construct

public function __construct(){}

construct php

class Example1
{
   public $cache_file;

   function __construct()
   {
      // some PHP code...
   }

   function __destruct()
   {
      $file = "/var/www/cache/tmp/{$this->cache_file}";
      if (file_exists($file)) @unlink($file);
   }
}

// some PHP code...

$user_data = unserialize($_GET['data']);

// some PHP code...