Mega Code Archive
Singleton Pattern Demo
<![CDATA[
<?php
class Configuration {
static private $instance = NULL;
private $settingsArray;
private function __construct(){
}
public function __destruct() {
if(!$this->updated) {
return;
}
foreach ($this->settingsArray as $key => $value) {
echo("$key = \"$value\"\n");
}
}
public function getInstance() {
if(self::$instance == NULL) {
self::$instance = new Configuration();
}
return self::$instance;
}
public function get($name) {
if(isset($this->settingsArray[$name])) {
return $this->settingsArray[$name];
} else {
return(NULL);
}
}
public function set($name, $value) {
if(!isset($this->settingsArray[$name]) OR ($this->settingsArray[$name] != $value)) {
$this->settingsArray[$name] = $value;
$this->updated = TRUE;
}
}
}
$config = Configuration::getInstance();
$config->set("username", "A");
$config->set("password", "B");
print($config->get("username"));
?>
]]>