PHP宸ュ巶妯″紡鐨勫疄鐜帮細

宸ュ巶妯″紡鏄竴绉嶅父鐢ㄧ殑闈㈠悜瀵硅薄璁捐妯″紡锛屽畠閫氳繃瀹氫箟涓€涓伐鍘傜被鏉ュ垱寤哄拰杩斿洖鍏朵粬瀵硅薄鐨勫疄渚嬶紝鑰屼笉闇€瑕佺洿鎺ヤ娇鐢╪ew鍏抽敭瀛楀疄渚嬪寲瀵硅薄銆備互涓嬫槸涓€涓畝鍗曠殑PHP宸ュ巶妯″紡鐨勫疄鐜扮ず渚嬶細

<?php
// 瀹氫箟涓€涓帴鍙?/span>
interface Shape {
public function draw();
}
// 瀹炵幇鎺ュ彛鐨勫叿浣撶被
class Circle implements Shape {
public function draw() {
echo "Drawing a circle\n";
}
}
class Square implements Shape {
public function draw() {
echo "Drawing a square\n";
}
}
// 瀹氫箟涓€涓伐鍘傜被
class ShapeFactory {
public static function createShape($type) {
switch ($type) {
case 'circle':
return new Circle();
case 'square':
return new Square();
default:
throw new Exception("Unsupported shape type: $type");
}
}
}
// 浣跨敤宸ュ巶绫诲垱寤哄璞?/span>
$circle = ShapeFactory::createShape('circle');
$circle->draw(); // 杈撳嚭 "Drawing a circle"
$square = ShapeFactory::createShape('square');
$square->draw(); // 杈撳嚭 "Drawing a square"

鍗曚緥妯″紡鐨勫疄鐜帮細

鍗曚緥妯″紡鏄竴绉嶅父鐢ㄧ殑闈㈠悜瀵硅薄璁捐妯″紡锛屽畠纭繚绫诲彧鏈変竴涓疄渚嬶紝骞舵彁渚涘叏灞€璁块棶璇ュ疄渚嬬殑鏂规硶銆備互涓嬫槸涓€涓畝鍗曠殑PHP鍗曚緥妯″紡鐨勫疄鐜扮ず渚嬶細

<?php
class Database {
private static $instance;
private $connection;
private function __construct() {
// 绉佹湁鏋勯€犲嚱鏁帮紝闃叉閫氳繃new鍏抽敭瀛楀疄渚嬪寲绫?/span>
$this->connection = mysqli_connect('localhost', 'username', 'password', 'database');
}
public static function getInstance() {
if (!self::$instance) {
self::$instance = new Database();
}
return self::$instance;
}
public function getConnection() {
return $this->connection;
}
}
// 浣跨敤鍗曚緥绫昏幏鍙栨暟鎹簱杩炴帴
$db = Database::getInstance();
$connection = $db->getConnection();
// 浣跨敤$connection杩涜鏁版嵁搴撴搷浣?/span>

鍦ㄤ笂闈㈢殑绀轰緥涓紝Database绫荤殑鏋勯€犲嚱鏁版槸绉佹湁鐨勶紝鍥犳涓嶈兘鐩存帴閫氳繃new鍏抽敭瀛楀疄渚嬪寲绫汇€傞€氳繃getInstance()鏂规硶鑾峰彇绫荤殑鍞竴瀹炰緥锛屽鏋滃疄渚嬩笉瀛樺湪锛屽垯鍒涘缓涓€涓柊瀹炰緥骞惰繑鍥烇紝鍚﹀垯鐩存帴杩斿洖宸插瓨鍦ㄧ殑瀹炰緥銆傞€氳繃getConnection()鏂规硶鍙互鑾峰彇鏁版嵁搴撹繛鎺ュ璞★紝鐒跺悗鍙互浣跨敤璇ヨ繛鎺ュ璞¤繘琛屾暟鎹簱鎿嶄綔銆?/p>