{"id":1104,"date":"2020-08-29T17:07:51","date_gmt":"2020-08-29T09:07:51","guid":{"rendered":"http:\/\/www.shuran.cn\/?p=1104"},"modified":"2020-08-29T17:07:51","modified_gmt":"2020-08-29T09:07:51","slug":"%e8%bd%ac%ef%bc%9aphp%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e7%bc%96%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.shuran.cn\/?p=1104","title":{"rendered":"\u8f6c\uff1aPHP\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b"},"content":{"rendered":"\n

\u57fa\u7840\u77e5\u8bc6\u8bf4\u7684\u6700\u6e05\u695a\u7684\u4e00\u4e2a\u5185\u5bb9\u4e86\u3002\u611f\u8c22\u4f5c\u8005\uff08\u67e5\u770b\u539f\u6587\uff09<\/a>\u3002<\/p>\n\n\n\n

\u4e00\u3001PHP\u7c7b\u548c\u5bf9\u8c61<\/h2>\n\n\n\n

\u7c7b\u662f\u9762\u5411\u5bf9\u8c61\u7a0b\u5e8f\u8bbe\u8ba1\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u901a\u4fd7\u7684\u7406\u89e3\u7c7b\u5c31\u662f\u5bf9\u73b0\u5b9e\u4e2d\u67d0\u4e00\u4e2a\u79cd\u7c7b\u7684\u4e1c\u897f\u7684\u62bd\u8c61\uff0c \u6bd4\u5982\u6c7d\u8f66\u53ef\u4ee5\u62bd\u8c61\u4e3a\u4e00\u4e2a\u7c7b\uff0c\u6c7d\u8f66\u62e5\u6709\u540d\u5b57\u3001\u8f6e\u80ce\u3001\u901f\u5ea6\u3001\u91cd\u91cf\u7b49\u5c5e\u6027\uff0c\u53ef\u4ee5\u6709\u6362\u6321\u3001\u524d\u8fdb\u3001\u540e\u9000\u7b49\u64cd\u4f5c\u65b9\u6cd5\u3002<\/p>\n\n\n\n

\u901a\u5e38\u5b9a\u4e49\u4e00\u4e2a\u6c7d\u8f66\u7c7b\u7684\u65b9\u6cd5\u4e3a\uff1a<\/em><\/p>\n\n\n\n

class Car {\n    $name = '\u6c7d\u8f66';\n    function getName() {\n        return $this->name;\n    }\n}\n<\/code><\/pre>\n\n\n\n
\u7c7b\u662f\u4e00\u7c7b\u4e1c\u897f\u7684\u7ed3\u6784\u63cf\u8ff0\uff0c\u800c\u5bf9\u8c61\u5219\u662f\u4e00\u7c7b\u4e1c\u897f\u7684\u4e00\u4e2a\u5177\u4f53\u5b9e\u4f8b\uff0c\u4f8b\u5982\u6c7d\u8f66\u8fd9\u4e2a\u540d\u8bcd\u53ef\u4ee5\u7406\u89e3\u4e3a\u6c7d\u8f66\u7684\u603b\u7c7b\uff0c\u4f46\u8fd9\u8f86\u6c7d\u8f66\u5219\u662f\u4e00\u4e2a\u5177\u4f53\u7684\u6c7d\u8f66\u5bf9\u8c61\u3002<\/p>\n\n\n\n
\u5bf9\u8c61\u901a\u8fc7new\u5173\u952e\u5b57\u8fdb\u884c\u5b9e\u4f8b\u5316\uff1a<\/em><\/p>\n\n\n\n
$car = new Car();\necho $car->getName();\n<\/code><\/pre>\n\n\n\n
\u7c7b\u4e0e\u5bf9\u8c61\u770b\u8d77\u6765\u6bd4\u8f83\u76f8\u4f3c\uff0c\u4f46\u5b9e\u9645\u4e0a\u6709\u672c\u8d28\u7684\u533a\u522b\uff0c\u7c7b\u662f\u62bd\u8c61\u7684\u6982\u5ff5\uff0c\u5bf9\u8c61\u662f\u5177\u4f53\u7684\u5b9e\u4f8b\u3002\u7c7b\u53ef\u4ee5\u4f7f\u7a0b\u5e8f\u5177\u6709\u53ef\u91cd\u7528\u6027\u3002<\/p>\n\n\n\n
1\u3001\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61<\/h3>\n\n\n\n
\u672c\u8282\u5f00\u59cb\u6211\u4eec\u4f7f\u7528\u6c7d\u8f66\u4e3e\u4f8b\u6765\u8ba4\u8bc6\u4e86\u7c7b\u4e0e\u5bf9\u8c61\uff0c\u672c\u8282\u6211\u4eec\u6765\u4e86\u89e3\u4e00\u4e0b\u7c7b\u7684\u5b9a\u4e49\u65b9\u6cd5\uff0c\u7c7b\u901a\u8fc7\u5173\u952e\u5b57class\u5f00\u5934\uff0c\u7136\u540e\u662f\u7c7b\u540d\u4e0e\u82b1\u62ec\u53f7\uff0c\u5728\u82b1\u62ec\u53f7\u4e2d\u5b9a\u4e49\u7c7b\u7684\u5c5e\u6027\u4e0e\u65b9\u6cd5\u3002\u7c7b\u540d\u5fc5\u987b\u662f\u5b57\u6bcd\u6216\u4e0b\u5212\u7ebf\u5f00\u5934\uff0c\u540e\u9762\u7d27\u8ddf\u82e5\u5e72\u4e2a\u5b57\u6bcd\u3001\u6570\u5b57\u6216\u4e0b\u5212\u7ebf\uff0c\u7c7b\u540d\u6700\u597d\u80fd\u591f\u8868\u610f\uff0c\u53ef\u4ee5\u91c7\u7528\u540d\u8bcd\u6216\u8005\u82f1\u6587\u5355\u8bcd\u3002<\/em><\/p>\n\n\n\n
\/\/\u5b9a\u4e49\u4e00\u4e2a\u7c7b\nclass Car {\n    \/\/\u5b9a\u4e49\u5c5e\u6027\n    public $name = '\u6c7d\u8f66';\n\n    \/\/\u5b9a\u4e49\u65b9\u6cd5\n    public function getName() {\n        \/\/\u65b9\u6cd5\u5185\u90e8\u53ef\u4ee5\u4f7f\u7528$this\u4f2a\u53d8\u91cf\u8c03\u7528\u5bf9\u8c61\u7684\u5c5e\u6027\u6216\u8005\u65b9\u6cd5\n        return $this->name;\n    }\n}\n<\/code><\/pre>\n\n\n\n
\u8981\u521b\u5efa\u4e00\u4e2a\u7c7b\u7684\u5b9e\u4f8b\uff0c\u53ef\u4ee5\u4f7f\u7528new\u5173\u952e\u5b57\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61\u3002<\/em><\/p>\n\n\n\n
$car = new Car();\n\/\/\u4e5f\u53ef\u4ee5\u91c7\u7528\u53d8\u91cf\u6765\u521b\u5efa\n$className = 'Car';\n$car = new $className();\n<\/code><\/pre>\n\n\n\n
2\u3001\u7c7b\u7684\u5c5e\u6027<\/h3>\n\n\n\n
\u5728\u7c7b\u4e2d\u5b9a\u4e49\u7684\u53d8\u91cf\u79f0\u4e4b\u4e3a\u5c5e\u6027\uff0c\u901a\u5e38\u5c5e\u6027\u8ddf\u6570\u636e\u5e93\u4e2d\u7684\u5b57\u6bb5\u6709\u4e00\u5b9a\u7684\u5173\u8054\uff0c\u56e0\u6b64\u4e5f\u53ef\u4ee5\u79f0\u4f5c\u201c\u5b57\u6bb5\u201d\u3002\u5c5e\u6027\u58f0\u660e\u662f\u7531\u5173\u952e\u5b57 public\uff0cprotected \u6216\u8005 private \u5f00\u5934\uff0c\u540e\u9762\u8ddf\u4e00\u4e2a\u666e\u901a\u7684\u53d8\u91cf\u58f0\u660e\u6765\u7ec4\u6210\u3002\u5c5e\u6027\u7684\u53d8\u91cf\u53ef\u4ee5\u8bbe\u7f6e\u521d\u59cb\u5316\u7684\u9ed8\u8ba4\u503c\uff0c\u9ed8\u8ba4\u503c\u5fc5\u987b\u662f\u5e38\u91cf\u3002<\/p>\n\n\n\n
\u8bbf\u95ee\u63a7\u5236\u7684\u5173\u952e\u5b57\u4ee3\u8868\u7684\u610f\u4e49\u4e3a\uff1a<\/p>\n\n\n\n
public\uff1a\u516c\u5f00\u7684
protected\uff1a\u53d7\u4fdd\u62a4\u7684
private\uff1a\u79c1\u6709\u7684<\/em><\/p>\n\n\n\n
class Car {\n    \/\/\u5b9a\u4e49\u516c\u5171\u5c5e\u6027\n    public $name = '\u6c7d\u8f66';\n\n    \/\/\u5b9a\u4e49\u53d7\u4fdd\u62a4\u7684\u5c5e\u6027\n    protected $corlor = '\u767d\u8272';\n\n    \/\/\u5b9a\u4e49\u79c1\u6709\u5c5e\u6027\n    private $price = '100000';\n}\n<\/code><\/pre>\n\n\n\n
\u9ed8\u8ba4\u90fd\u4e3apublic\uff0c\u5916\u90e8\u53ef\u4ee5\u8bbf\u95ee\u3002\u4e00\u822c\u901a\u8fc7-><\/code>\u5bf9\u8c61\u64cd\u4f5c\u7b26\u6765\u8bbf\u95ee\u5bf9\u8c61\u7684\u5c5e\u6027\u6216\u8005\u65b9\u6cd5\uff0c\u5bf9\u4e8e\u9759\u6001\u5c5e\u6027\u5219\u4f7f\u7528::<\/code>\u53cc\u5192\u53f7\u8fdb\u884c\u8bbf\u95ee\u3002\u5f53\u5728\u7c7b\u6210\u5458\u65b9\u6cd5\u5185\u90e8\u8c03\u7528\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u4f7f\u7528$this\u4f2a\u53d8\u91cf\u8c03\u7528\u5f53\u524d\u5bf9\u8c61\u7684\u5c5e\u6027\u3002<\/em><\/p>\n\n\n\n
$car = new Car();\necho $car->name;   \/\/\u8c03\u7528\u5bf9\u8c61\u7684\u5c5e\u6027\necho $car->color;  \/\/\u9519\u8bef \u53d7\u4fdd\u62a4\u7684\u5c5e\u6027\u4e0d\u5141\u8bb8\u5916\u90e8\u8c03\u7528\necho $car->price;  \/\/\u9519\u8bef \u79c1\u6709\u5c5e\u6027\u4e0d\u5141\u8bb8\u5916\u90e8\u8c03\u7528\n<\/code><\/pre>\n\n\n\n
\u53d7\u4fdd\u62a4\u7684\u5c5e\u6027\u4e0e\u79c1\u6709\u5c5e\u6027\u4e0d\u5141\u8bb8\u5916\u90e8\u8c03\u7528\uff0c\u5728\u7c7b\u7684\u6210\u5458\u65b9\u6cd5\u5185\u90e8\u662f\u53ef\u4ee5\u8c03\u7528\u7684\u3002<\/em><\/p>\n\n\n\n
class Car{\n    private $price = '1000';\n    public function getPrice() {\n        return $this->price; \/\/\u5185\u90e8\u8bbf\u95ee\u79c1\u6709\u5c5e\u6027\n\u200b    }\n}\n<\/code><\/pre>\n\n\n\n
3\u3001\u5b9a\u4e49\u7c7b\u7684\u65b9\u6cd5<\/h3>\n\n\n\n
\u65b9\u6cd5\u5c31\u662f\u5728\u7c7b\u4e2d\u7684function\uff0c\u5f88\u591a\u65f6\u5019\u6211\u4eec\u5206\u4e0d\u6e05\u65b9\u6cd5\u4e0e\u51fd\u6570\u6709\u4ec0\u4e48\u5dee\u522b\uff0c\u5728\u9762\u5411\u8fc7\u7a0b\u7684\u7a0b\u5e8f\u8bbe\u8ba1\u4e2dfunction\u53eb\u505a\u51fd\u6570\uff0c\u5728\u9762\u5411\u5bf9\u8c61\u4e2dfunction\u5219\u88ab\u79f0\u4e4b\u4e3a\u65b9\u6cd5\u3002<\/p>\n\n\n\n
\u540c\u5c5e\u6027\u4e00\u6837\uff0c\u7c7b\u7684\u65b9\u6cd5\u4e5f\u5177\u6709public\uff0cprotected \u4ee5\u53ca private \u7684\u8bbf\u95ee\u63a7\u5236\u3002<\/p>\n\n\n\n
\u8bbf\u95ee\u63a7\u5236\u7684\u5173\u952e\u5b57\u4ee3\u8868\u7684\u610f\u4e49\u4e3a\uff1a
public\uff1a\u516c\u5f00\u7684
protected\uff1a\u53d7\u4fdd\u62a4\u7684
private\uff1a\u79c1\u6709\u7684<\/p>\n\n\n\n
\u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\u5b9a\u4e49\u65b9\u6cd5\uff1a<\/em><\/p>\n\n\n\n
class Car {\n    public function getName() {\n        return '\u6c7d\u8f66';\n    }\n\u200b}\n$car = new Car();\necho $car->getName();\n<\/code><\/pre>\n\n\n\n
\u4f7f\u7528\u5173\u952e\u5b57static\u4fee\u9970\u7684\uff0c\u79f0\u4e4b\u4e3a\u9759\u6001\u65b9\u6cd5\uff0c\u9759\u6001\u65b9\u6cd5\u4e0d\u9700\u8981\u5b9e\u4f8b\u5316\u5bf9\u8c61\uff0c\u53ef\u4ee5\u901a\u8fc7\u7c7b\u540d\u76f4\u63a5\u8c03\u7528\uff0c\u64cd\u4f5c\u7b26\u4e3a\u53cc\u5192\u53f7::\u3002<\/em><\/p>\n\n\n\n
class Car {\n    public static function getName() {\n        return '\u6c7d\u8f66';\n    }\n\u200b}\necho Car::getName(); \/\/\u7ed3\u679c\u4e3a\u201c\u6c7d\u8f66\u201d\n<\/code><\/pre>\n\n\n\n
4\u3001\u5b9a\u4e49\u7c7b\u7684\u65b9\u6cd5PHP\u7c7b\u548c\u5bf9\u8c61\u4e4b\u6784\u9020\u51fd\u6570\u548c\u6790\u6784\u51fd\u6570<\/h3>\n\n\n\n
PHP5\u53ef\u4ee5\u5728\u7c7b\u4e2d\u4f7f\u7528__construct()<\/code>\u5b9a\u4e49\u4e00\u4e2a\u6784\u9020\u51fd\u6570\uff0c\u5177\u6709\u6784\u9020\u51fd\u6570\u7684\u7c7b\uff0c\u4f1a\u5728\u6bcf\u6b21\u5bf9\u8c61\u521b\u5efa\u7684\u65f6\u5019\u8c03\u7528\u8be5\u51fd\u6570\uff0c\u56e0\u6b64\u5e38\u7528\u6765\u5728\u5bf9\u8c61\u521b\u5efa\u7684\u65f6\u5019\u8fdb\u884c\u4e00\u4e9b\u521d\u59cb\u5316\u5de5\u4f5c\u3002<\/em><\/p>\n\n\n\n
class Car {\n   function __construct() {\n       print \"\u6784\u9020\u51fd\u6570\u88ab\u8c03\u7528\\n\";\n   }\n}\n$car = new Car(); \/\/\u5b9e\u4f8b\u5316\u7684\u65f6\u5019 \u4f1a\u81ea\u52a8\u8c03\u7528\u6784\u9020\u51fd\u6570__construct\uff0c\u8fd9\u91cc\u4f1a\u8f93\u51fa\u4e00\u4e2a\u5b57\u7b26\u4e32\n<\/code><\/pre>\n\n\n\n
\u5728\u5b50\u7c7b\u4e2d\u5982\u679c\u5b9a\u4e49\u4e86__construct<\/code>\u5219\u4e0d\u4f1a\u8c03\u7528\u7236\u7c7b\u7684__construct<\/code>\uff0c\u5982\u679c\u9700\u8981\u540c\u65f6\u8c03\u7528\u7236\u7c7b\u7684\u6784\u9020\u51fd\u6570\uff0c\u9700\u8981\u4f7f\u7528parent::__construct()<\/code>\u663e\u5f0f\u7684\u8c03\u7528\u3002<\/em><\/p>\n\n\n\n
class Car {\n   function __construct() {\n       print \"\u7236\u7c7b\u6784\u9020\u51fd\u6570\u88ab\u8c03\u7528\\n\";\n   }\n}\nclass Truck extends Car {\n   function __construct() {\n       print \"\u5b50\u7c7b\u6784\u9020\u51fd\u6570\u88ab\u8c03\u7528\\n\";\n       parent::__construct();\n   }\n}\n$car = new Truck();\n<\/code><\/pre>\n\n\n\n
\u540c\u6837\uff0cPHP5\u652f\u6301\u6790\u6784\u51fd\u6570\uff0c\u4f7f\u7528__destruct()<\/code>\u8fdb\u884c\u5b9a\u4e49\uff0c\u6790\u6784\u51fd\u6570\u6307\u7684\u662f\u5f53\u67d0\u4e2a\u5bf9\u8c61\u7684\u6240\u6709\u5f15\u7528\u88ab\u5220\u9664\uff0c\u6216\u8005\u5bf9\u8c61\u88ab\u663e\u5f0f\u7684\u9500\u6bc1\u65f6\u4f1a\u6267\u884c\u7684\u51fd\u6570\u3002<\/em><\/p>\n\n\n\n
class Car {\n   function __construct() {\n       print \"\u6784\u9020\u51fd\u6570\u88ab\u8c03\u7528 \\n\";\n   }\n   function __destruct() {\n       print \"\u6790\u6784\u51fd\u6570\u88ab\u8c03\u7528 \\n\";\n   }\n}\n$car = new Car(); \/\/\u5b9e\u4f8b\u5316\u65f6\u4f1a\u8c03\u7528\u6784\u9020\u51fd\u6570\necho '\u4f7f\u7528\u540e\uff0c\u51c6\u5907\u9500\u6bc1car\u5bf9\u8c61 \\n';\nunset($car); \/\/\u9500\u6bc1\u65f6\u4f1a\u8c03\u7528\u6790\u6784\u51fd\u6570\n<\/code><\/pre>\n\n\n\n
\u5f53PHP\u4ee3\u7801\u6267\u884c\u5b8c\u6bd5\u4ee5\u540e\uff0c\u4f1a\u81ea\u52a8\u56de\u6536\u4e0e\u9500\u6bc1\u5bf9\u8c61\uff0c\u56e0\u6b64\u4e00\u822c\u60c5\u51b5\u4e0b\u4e0d\u9700\u8981\u663e\u5f0f\u7684\u53bb\u9500\u6bc1\u5bf9\u8c61\u3002<\/p>\n\n\n\n
4\u3001PHP\u7c7b\u548c\u5bf9\u8c61\u4e4bStatic\u9759\u6001\u5173\u952e\u5b57<\/h3>\n\n\n\n
\u9759\u6001\u5c5e\u6027\u4e0e\u65b9\u6cd5\u53ef\u4ee5\u5728\u4e0d\u5b9e\u4f8b\u5316\u7c7b\u7684\u60c5\u51b5\u4e0b\u8c03\u7528\uff0c\u76f4\u63a5\u4f7f\u7528\u7c7b\u540d::\u65b9\u6cd5\u540d\u7684\u65b9\u5f0f\u8fdb\u884c\u8c03\u7528\u3002\u9759\u6001\u5c5e\u6027\u4e0d\u5141\u8bb8\u5bf9\u8c61\u4f7f\u7528-><\/code>\u64cd\u4f5c\u7b26\u8c03\u7528\u3002<\/em><\/p>\n\n\n\n
class Car {\n    private static $speed = 10;\n    \n    public static function getSpeed() {\n        return self::$speed;\n    }\n}\necho Car::getSpeed();  \/\/\u8c03\u7528\u9759\u6001\u65b9\u6cd5\n<\/code><\/pre>\n\n\n\n
\u9759\u6001\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u901a\u8fc7\u53d8\u91cf\u6765\u8fdb\u884c\u52a8\u6001\u8c03\u7528<\/em><\/p>\n\n\n\n
$func = 'getSpeed';\n$className = 'Car';\necho $className::$func();  \/\/\u52a8\u6001\u8c03\u7528\u9759\u6001\u65b9\u6cd5\n<\/code><\/pre>\n\n\n\n
\u9759\u6001\u65b9\u6cd5\u4e2d\uff0c$this<\/code>\u4f2a\u53d8\u91cf\u4e0d\u5141\u8bb8\u4f7f\u7528\u3002\u53ef\u4ee5\u4f7f\u7528self<\/code>\uff0cparent<\/code>\uff0cstatic<\/code>\u5728\u5185\u90e8\u8c03\u7528\u9759\u6001\u65b9\u6cd5\u4e0e\u5c5e\u6027\u3002<\/em><\/p>\n\n\n\n
class Car {\n    private static $speed = 10;\n    \n    public static function getSpeed() {\n        return self::$speed;\n    }\n    \n    public static function speedUp() {\n        return self::$speed+=10;\n    }\n}\nclass BigCar extends Car {\n    public static function start() {\n        parent::speedUp();\n    }\n}\n\nBigCar::start();\necho BigCar::getSpeed();\n<\/code><\/pre>\n\n\n\n
5\u3001PHP\u7c7b\u548c\u5bf9\u8c61\u4e4b\u8bbf\u95ee\u63a7\u5236<\/h3>\n\n\n\n
\u524d\u9762\u7684\u5c0f\u8282\uff0c\u6211\u4eec\u5df2\u7ecf\u63a5\u89e6\u8fc7\u8bbf\u95ee\u63a7\u5236\u4e86\uff0c\u8bbf\u95ee\u63a7\u5236\u901a\u8fc7\u5173\u952e\u5b57public<\/code>\uff0cprotected<\/code>\u548cprivate<\/code>\u6765\u5b9e\u73b0\u3002\u88ab\u5b9a\u4e49\u4e3a\u516c\u6709\u7684\u7c7b\u6210\u5458\u53ef\u4ee5\u5728\u4efb\u4f55\u5730\u65b9\u88ab\u8bbf\u95ee\u3002\u88ab\u5b9a\u4e49\u4e3a\u53d7\u4fdd\u62a4\u7684\u7c7b\u6210\u5458\u5219\u53ef\u4ee5\u88ab\u5176\u81ea\u8eab\u4ee5\u53ca\u5176\u5b50\u7c7b\u548c\u7236\u7c7b\u8bbf\u95ee\u3002\u88ab\u5b9a\u4e49\u4e3a\u79c1\u6709\u7684\u7c7b\u6210\u5458\u5219\u53ea\u80fd\u88ab\u5176\u5b9a\u4e49\u6240\u5728\u7684\u7c7b\u8bbf\u95ee\u3002<\/p>\n\n\n\n
\u7c7b\u5c5e\u6027\u5fc5\u987b\u5b9a\u4e49\u4e3a\u516c\u6709\u3001\u53d7\u4fdd\u62a4\u3001\u79c1\u6709\u4e4b\u4e00\u3002\u4e3a\u517c\u5bb9PHP5\u4ee5\u524d\u7684\u7248\u672c\uff0c\u5982\u679c\u91c7\u7528 var<\/code> \u5b9a\u4e49\uff0c\u5219\u88ab\u89c6\u4e3a\u516c\u6709\u3002<\/em><\/p>\n\n\n\n
class Car {\n    $speed = 10; \/\/\u9519\u8bef \u5c5e\u6027\u5fc5\u987b\u5b9a\u4e49\u8bbf\u95ee\u63a7\u5236\n    public $name;   \/\/\u5b9a\u4e49\u5171\u6709\u5c5e\u6027\n}\n<\/code><\/pre>\n\n\n\n
\u7c7b\u4e2d\u7684\u65b9\u6cd5\u53ef\u4ee5\u88ab\u5b9a\u4e49\u4e3a\u516c\u6709\u3001\u79c1\u6709\u6216\u53d7\u4fdd\u62a4\u3002\u5982\u679c\u6ca1\u6709\u8bbe\u7f6e\u8fd9\u4e9b\u5173\u952e\u5b57\uff0c\u5219\u8be5\u65b9\u6cd5\u9ed8\u8ba4\u4e3a\u516c\u6709\u3002<\/em><\/p>\n\n\n\n
class Car {\n\u200b    \/\/\u9ed8\u8ba4\u4e3a\u5171\u6709\u65b9\u6cd5\n    function turnLeft() {\n    }\n}\n<\/code><\/pre>\n\n\n\n
\u5982\u679c\u6784\u9020\u51fd\u6570\u5b9a\u4e49\u6210\u4e86\u79c1\u6709\u65b9\u6cd5\uff0c\u5219\u4e0d\u5141\u8bb8\u76f4\u63a5\u5b9e\u4f8b\u5316\u5bf9\u8c61\u4e86\uff0c\u8fd9\u65f6\u5019\u4e00\u822c\u901a\u8fc7\u9759\u6001\u65b9\u6cd5\u8fdb\u884c\u5b9e\u4f8b\u5316\uff0c\u5728\u8bbe\u8ba1\u6a21\u5f0f\u4e2d\u4f1a\u7ecf\u5e38\u4f7f\u7528\u8fd9\u6837\u7684\u65b9\u6cd5\u6765\u63a7\u5236\u5bf9\u8c61\u7684\u521b\u5efa\uff0c\u6bd4\u5982\u5355\u4f8b\u6a21\u5f0f\u53ea\u5141\u8bb8\u6709\u4e00\u4e2a\u5168\u5c40\u552f\u4e00\u7684\u5bf9\u8c61\u3002<\/em><\/p>\n\n\n\n
class Car {\n    private function __construct() {\n        echo 'object create';\n    }\n\n    private static $_object = null;\n    public static function getInstance() {\n        if (empty(self::$_object)) {\n            self::$_object = new Car(); \/\/\u5185\u90e8\u65b9\u6cd5\u53ef\u4ee5\u8c03\u7528\u79c1\u6709\u65b9\u6cd5\uff0c\u56e0\u6b64\u8fd9\u91cc\u53ef\u4ee5\u521b\u5efa\u5bf9\u8c61\n        }\n        return self::$_object;\n    }\n}\n\/\/$car = new Car(); \/\/\u8fd9\u91cc\u4e0d\u5141\u8bb8\u76f4\u63a5\u5b9e\u4f8b\u5316\u5bf9\u8c61\n$car = Car::getInstance(); \/\/\u901a\u8fc7\u9759\u6001\u65b9\u6cd5\u6765\u83b7\u5f97\u4e00\u4e2a\u5b9e\u4f8b\n<\/code><\/pre>\n\n\n\n
6\u3001PHP\u7c7b\u548c\u5bf9\u8c61\u4e4b\u5bf9\u8c61\u7ee7\u627f<\/h3>\n\n\n\n
\u7ee7\u627f\u662f\u9762\u5411\u5bf9\u8c61\u7a0b\u5e8f\u8bbe\u8ba1\u4e2d\u5e38\u7528\u7684\u4e00\u4e2a\u7279\u6027\uff0c\u5176\u5b9e\u5c31\u662f\u65b0\u7684\u7c7b\u5305\u542b\u65e7\u7684\u7c7b\u4e2d\u7684\u5c5e\u6027\uff08\u548c\u65b9\u6cd5\uff09\uff0c\u672c\u6587\u7528\u751f\u7269\u4e3e\u4f8b\u5b50\u3002
\u751f\u7269<\/strong>\u662f\u4e00\u4e2a\u6bd4\u8f83\u5927\u7684\u7c7b\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u79f0\u4e4b\u4e3a\u57fa\u7c7b\uff0c\u9664\u6b64\u4e4b\u5916\uff0c\u4ee5\u751f\u7269<\/strong>\u4e3a\u7236\u7c7b\u7684\u6709\u7ec6\u80de\u751f\u7269<\/strong>\u548c\u975e\u7ec6\u80de\u751f\u7269<\/strong>\uff0c\u975e\u7ec6\u80de\u751f\u7269<\/strong>\u5176\u5b9e\u5c31\u662f\u75c5\u6bd2\uff0c\u7ee7\u627f\u4e86\u7ec6\u80de\u751f\u7269<\/strong>\u7684\u7c7b\u5c31\u662f\u539f\u6838\u751f\u7269<\/strong>\u548c\u771f\u6838\u751f\u7269<\/strong>\uff0c\u539f\u6838\u751f\u7269<\/strong>\u5c31\u662f\u7ec6\u83cc\uff0c\u7ee7\u627f\u4e86\u771f\u6838\u751f\u7269<\/strong>\u7684\u7c7b\u6709\u690d\u7269<\/strong>\u3001\u52a8\u7269<\/strong>\u548c\u771f\u83cc<\/strong>\uff0c\u7ee7\u627f\u4e86\u690d\u7269<\/strong>\u7684\u7c7b\u6709\u5b62\u5b50\u690d\u7269<\/strong>\u548c\u79cd\u5b50\u690d\u7269<\/strong>\uff0c\u7ee7\u627f\u4e86\u52a8\u7269<\/strong>\u7684\u7c7b\u6709\u810a\u690e\u52a8\u7269<\/strong>\u548c\u65e0\u810a\u690e\u52a8\u7269<\/strong>\uff0c\u63a5\u4e0b\u6765\u8fd8\u6709\u522b\u7684\u7c7b\u5206\u522b\u7ee7\u627f\u8fd9\u4e9b\u7c7b\u3002
\u751f\u7269<\/strong>\u7c7b\u4e2d\u6709\u5f88\u591a\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u5c5e\u6027\u6709\u4f53\u79ef<\/strong>\u3001\u8d28\u91cf<\/strong>\u3001\u5bff\u547d\u957f\u77ed<\/strong>\u7b49\uff0c\u65b9\u6cd5\u6709\u81ea\u6211\u590d\u5236<\/strong>\uff08\u7e41\u6b96\u529f\u80fd<\/strong>\uff09\u7b49\u3002\u7ee7\u627f\u4e0b\u6765\u4e4b\u540e\uff0c\u5373\u4f7f\u810a\u690e\u52a8\u7269\u6ca1\u6709\u518d\u7f16\u5199\u4f53\u79ef<\/strong>\u3001\u8d28\u91cf<\/strong>\u3001\u5bff\u547d\u957f\u77ed<\/strong>\u3001\u81ea\u6211\u590d\u5236<\/strong>\u7b49\u5c5e\u6027\u548c\u529f\u80fd\uff0c\u8be5\u7c7b\u4e5f\u81ea\u52a8\u62e5\u6709\u4ee5\u4e0a\u5c5e\u6027\u3002\u8fd9\u5c31\u5b9e\u73b0\u4e86\u4ee3\u7801\u7684\u590d\u7528\u3002
\u5728\u5b50\u7c7b\u4e2d\u4f7f\u7528parent::\u7236\u7c7b\u65b9\u6cd5\u540d<\/code>\u53ef\u4ee5\u8c03\u7528\u7236\u7c7b\u65b9\u6cd5\u3002
<\/p>\n\n\n\n
\"\"\/<\/figure>\n\n\n\n
\u751f\u7269\u5206\u7c7b.png<\/p>\n\n\n\n
7\u3001PHP\u7c7b\u548c\u5bf9\u8c61\u4e4b\u91cd\u8f7d<\/h3>\n\n\n\n
\u7531\u4e8ePHP\u662f\u5f31\u7c7b\u578b\u8bed\u8a00\uff0c\u56e0\u6b64\u51fd\u6570\u7684\u8f93\u5165\u53c2\u6570\u7c7b\u578b\u65e0\u6cd5\u786e\u5b9a\uff08\u53ef\u4ee5\u4f7f\u7528\u7c7b\u578b\u6697\u793a\uff0c\u4f46\u662f\u7c7b\u578b\u6697\u793a\u65e0\u6cd5\u7528\u5728\u8bf8\u5982\u6574\u578b\uff0c\u5b57\u7b26\u4e32\u4e4b\u7c7b\u7684\u6807\u91cf\u7c7b\u578b\u4e0a\uff09\uff0c\u5e76\u4e14\u5bf9\u4e8e\u4e00\u4e2a\u51fd\u6570\uff0c\u6bd4\u5982\u53ea\u5b9a\u4e49\u4e863\u4e2a\u8f93\u5165\u53c2\u6570\uff0cPHP\u5374\u8fd0\u884c\u8c03\u7528\u7684\u65f6\u5019\u8f93\u51654\u4e2a\u6216\u8005\u66f4\u591a\u7684\u53c2\u6570\u3002\u56e0\u6b64\u57fa\u4e8e\u8fd92\u70b9\uff0c\u6ce8\u5b9a\u4e86PHP\u4e2d\u65e0\u6cd5\u91cd\u8f7d\u51fd\u6570\uff0c\uff08\u7c7b\u4f3cJavascript\u8bed\u8a00\uff09\uff0c\u4e5f\u65e0\u6cd5\u6709\u6784\u9020\u51fd\u6570\u7684\u91cd\u8f7d\u3002<\/p>\n\n\n\n
\u7531\u4e8e\u5b9e\u73b0\u51fd\u6570\u7684\u91cd\u8f7d\u5bf9\u63d0\u9ad8\u5f00\u53d1\u6548\u7387\u5f88\u6709\u5e2e\u52a9\uff0c\u5982\u679c\u80fd\u8c61C#\u6216\u8005C++\u90a3\u6837\uff0c\u90a3\u5c31\u975e\u5e38\u597d\u4e86\u3002\u4e8b\u5b9e\u4e0a\uff0cPHP\u7684\u63d0\u4f9b\u4e86\u4e00\u4e2a\u9b54\u672f\u65b9\u6cd5\uff0cmixed __call ( string name, array arguments )<\/code>\u3002\u8fd9\u4e2a\u65b9\u6cd5\u5728php\u624b\u518c\u4e2d\u4e5f\u6709\u63d0\u53ca\uff0c\u6839\u636e\u5b98\u65b9\u6587\u6863\uff0c\u79f0\u6b64\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u51fd\u6570\u91cd\u8f7d\u3002\u5f53\u8c03\u7528\u5bf9\u8c61\u4e2d\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u65b9\u6cd5\u7684\u65f6\u5019\uff0c\u5982\u679c\u5b9a\u4e49\u4e86__call()<\/code>\u65b9\u6cd5\uff0c\u5219\u4f1a\u8c03\u7528\u8be5\u65b9\u6cd5\u3002\u6bd4\u5982\u4e0b\u9762\u7684\u4ee3\u7801:<\/em><\/p>\n\n\n\n
<?php\nclass A\n{\n   function __call ( $name, $arguments )\n    {\n        echo \"__call\u8c03\u7528<br\/>\";\n        echo '$name\u4e3a'.$name.\"<br\/>\";\n        print_r ($arguments);\n    }\n}\n(new A)->test(\"test\",\"argument\");\n?>\n<\/code><\/pre>\n\n\n\n
\u8fd0\u884c\u7ed3\u679c\u4e3a\uff1a<\/p>\n\n\n\n
__call<\/code>\u8c03\u7528$name<\/code>\u4e3atest<\/code><\/p>\n\n\n\n
Array ( [0] => test [1] => argument )<\/code><\/p>\n\n\n\n
\u56e0\u6b64\u53ea\u9700\u8981\u5229\u7528\u8be5\u9b54\u672f\u65b9\u6cd5\u65e2\u53ef\u4ee5\u5b9e\u73b0\u51fd\u6570\u91cd\u8f7d\u3002<\/p>\n\n\n\n
\u4ee3\u7801\u5982\u4e0b\uff1a<\/em><\/p>\n\n\n\n
<?php\nclass A\n{\n     function __call ($name, $args )\n    {\n        if($name=='f')\n        {\n            $i=count($args);\n            if (method_exists($this,$f='f'.$i)) {\n                call_user_func_array(array($this,$f),$args);\n            }\n        }\n    }\n    function f1($a1)\n    {\n        echo \"1\u4e2a\u53c2\u6570\".$a1.\"<br\/>\";\n    }\n    function f2($a1,$a2)\n    {\n        echo \"2\u4e2a\u53c2\u6570\".$a1.\",\".$a2.\"<br\/>\";\n    }\n    function f3($a1,$a2,$a3)\n    {\n          echo \"3\u4e2a\u53c2\u6570\".$a1.\",\".$a2.\",\".$a3.\"<br\/>\";\n    }\n}\n(new A)->f('a');\n(new A)->f('a','b');\n(new A)->f('a','b','c');\n?>\n<\/code><\/pre>\n\n\n\n
\u8f93\u51fa\u5982\u4e0b\uff1a<\/em><\/p>\n\n\n\n
1\u4e2a\u53c2\u6570a   \n2\u4e2a\u53c2\u6570a,b    \n3\u4e2a\u53c2\u6570a,b,c\n<\/code><\/pre>\n\n\n\n
\u540c\u6837\u7684\u5728PHP\u4e2d\uff0c\u5b9e\u73b0\u6784\u9020\u51fd\u6570\u7684\u91cd\u8f7d\uff0c\u4e5f\u53ea\u80fd\u53d8\u901a\u7684\u5b9e\u73b0\u3002\u5b9e\u73b0\u7684\u5173\u952e\u8981\u7d20\u662f\u83b7\u53d6\u8f93\u5165\u53c2\u6570\uff0c\u5e76\u4e14\u6839\u636e\u8f93\u5165\u53c2\u6570\u5224\u65ad\u8c03\u7528\u54ea\u4e2a\u65b9\u6cd5\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a<\/em><\/p>\n\n\n\n
<?php\nclass A\n{\n    function __construct()\n    {\n        echo \"\u6267\u884c\u6784\u9020\u51fd\u6570<br\/>\";\n        $a = func_get_args(); \/\/\u83b7\u53d6\u6784\u9020\u51fd\u6570\u4e2d\u7684\u53c2\u6570\n        $i = count($a);\n        if (method_exists($this,$f='__construct'.$i)) {\n            call_user_func_array(array($this,$f),$a);\n        }\n    }\n    function __construct1($a1)\n    {\n        echo \"1\u4e2a\u53c2\u6570\".$a1.\"<br\/>\";\n    }\n    function __construct2($a1,$a2)\n    {\n        echo \"2\u4e2a\u53c2\u6570\".$a1.\",\".$a2.\"<br\/>\";\n    }\nfunction __construct3($a1,$a2,$a3)\n    {\n          echo \"3\u4e2a\u53c2\u6570\".$a1.\",\".$a2.\",\".$a3.\"<br\/>\";\n    }\n}\n$o = new A('a');\n$o = new A('a','b');\n$o = new A('a','b','c');\n?>\n<\/code><\/pre>\n\n\n\n
\u6267\u884c\u6784\u9020\u51fd\u6570
1\u4e2a\u53c2\u6570a
\u6267\u884c\u6784\u9020\u51fd\u6570
2\u4e2a\u53c2\u6570a,b
\u6267\u884c\u6784\u9020\u51fd\u6570
3\u4e2a\u53c2\u6570a,b,c<\/p>\n\n\n\n
\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0c\u548cc#\u7b49\u9762\u5411\u5bf9\u8c61\u8bed\u8a00\u4e00\u6837\uff0cphp\u4e2d\uff0c\u628a\u6784\u9020\u51fd\u6570\u8bbe\u6210\u79c1\u6709\u6216\u8005protected\uff0c\u5c31\u4e0d\u80fd\u5b9e\u4f8b\u5316\u8be5\u5bf9\u8c61\u4e86\u3002<\/p>\n\n\n\n
PHP\u4e2d\u7684\u91cd\u8f7d\u6307\u7684\u662f\u52a8\u6001\u7684\u521b\u5efa\u5c5e\u6027\u4e0e\u65b9\u6cd5\uff0c\u662f\u901a\u8fc7\u9b54\u672f\u65b9\u6cd5\u6765\u5b9e\u73b0\u7684\u3002\u5c5e\u6027\u7684\u91cd\u8f7d\u901a\u8fc7__set<\/code>\uff0c__get<\/code>\uff0c__isset<\/code>\uff0c__unset<\/code>\u6765\u5206\u522b\u5b9e\u73b0\u5bf9\u4e0d\u5b58\u5728\u5c5e\u6027\u7684\u8d4b\u503c\u3001\u8bfb\u53d6\u3001\u5224\u65ad\u5c5e\u6027\u662f\u5426\u8bbe\u7f6e\u3001\u9500\u6bc1\u5c5e\u6027\u3002<\/em><\/p>\n\n\n\n
class Car {\n    private $ary = array();\n    \n    public function __set($key, $val) {\n        $this->ary[$key] = $val;\n    }\n    \n    public function __get($key) {\n        if (isset($this->ary[$key])) {\n            return $this->ary[$key];\n        }\n        return null;\n    }\n    \n    public function __isset($key) {\n        if (isset($this->ary[$key])) {\n            return true;\n        }\n        return false;\n    }\n    \n    public function __unset($key) {\n        unset($this->ary[$key]);\n    }\n}\n$car = new Car();\n$car->name = '\u6c7d\u8f66';  \/\/name\u5c5e\u6027\u52a8\u6001\u521b\u5efa\u5e76\u8d4b\u503c\necho $car->name;\n<\/code><\/pre>\n\n\n\n
\u65b9\u6cd5\u7684\u91cd\u8f7d\u901a\u8fc7__call<\/code>\u6765\u5b9e\u73b0\uff0c\u5f53\u8c03\u7528\u4e0d\u5b58\u5728\u7684\u65b9\u6cd5\u7684\u65f6\u5019\uff0c\u5c06\u4f1a\u8f6c\u4e3a\u53c2\u6570\u8c03\u7528__call<\/code>\u65b9\u6cd5\uff0c\u5f53\u8c03\u7528\u4e0d\u5b58\u5728\u7684\u9759\u6001\u65b9\u6cd5\u65f6\u4f1a\u4f7f\u7528__callStatic<\/code>\u91cd\u8f7d\u3002<\/em><\/p>\n\n\n\n
class Car {\n    public $speed = 0;\n    \n    public function __call($name, $args) {\n        if ($name == 'speedUp') {\n            $this->speed += 10;\n        }\n    }\n}\n$car = new Car();\n$car->speedUp(); \/\/\u8c03\u7528\u4e0d\u5b58\u5728\u7684\u65b9\u6cd5\u4f1a\u4f7f\u7528\u91cd\u8f7d\necho $car->speed;\n<\/code><\/pre>\n\n\n\n
8\u3001PHP\u7c7b\u548c\u5bf9\u8c61\u4e4b\u5bf9\u8c61\u7684\u9ad8\u7ea7\u7279\u6027<\/h3>\n\n\n\n
\uff081\uff09\u5bf9\u8c61\u6bd4\u8f83<\/h4>\n\n\n\n
\u5f53\u540c\u4e00\u4e2a\u7c7b\u7684\u4e24\u4e2a\u5b9e\u4f8b\u7684\u6240\u6709\u5c5e\u6027\u90fd\u76f8\u7b49\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u6bd4\u8f83\u8fd0\u7b97\u7b26==<\/code>\u8fdb\u884c\u5224\u65ad\uff0c\u5f53\u9700\u8981\u5224\u65ad\u4e24\u4e2a\u53d8\u91cf\u662f\u5426\u4e3a\u540c\u4e00\u4e2a\u5bf9\u8c61\u7684\u5f15\u7528\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5168\u7b49\u8fd0\u7b97\u7b26===<\/code>\u8fdb\u884c\u5224\u65ad\u3002<\/em><\/p>\n\n\n\n
class Car {\n}\n$a = new Car();\n$b = new Car();\nif ($a == $b) echo '==';   \/\/true\nif ($a === $b) echo '==='; \/\/false\n<\/code><\/pre>\n\n\n\n
\uff082\uff09\u5bf9\u8c61\u590d\u5236<\/h4>\n\n\n\n
\u5728\u4e00\u4e9b\u7279\u6b8a\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u901a\u8fc7\u5173\u952e\u5b57clone\u6765\u590d\u5236\u4e00\u4e2a\u5bf9\u8c61\uff0c\u8fd9\u65f6__clone<\/code>\u65b9\u6cd5\u4f1a\u88ab\u8c03\u7528\uff0c\u901a\u8fc7\u8fd9\u4e2a\u9b54\u672f\u65b9\u6cd5\u6765\u8bbe\u7f6e\u5c5e\u6027\u7684\u503c\u3002<\/em><\/p>\n\n\n\n
class Car {\n    public $name = 'car';\n    \n    public function __clone() {\n        $obj = new Car();\n        $obj->name = $this->name;\n    }\n}\n$a = new Car();\n$a->name = 'new car';\n$b = clone $a;\nvar_dump($b);\n<\/code><\/pre>\n\n\n\n
\uff083\uff09\u5bf9\u8c61\u5e8f\u5217\u5316<\/h4>\n\n\n\n
\u53ef\u4ee5\u901a\u8fc7serialize<\/code>\u65b9\u6cd5\u5c06\u5bf9\u8c61\u5e8f\u5217\u5316\u4e3a\u5b57\u7b26\u4e32\uff0c\u7528\u4e8e\u5b58\u50a8\u6216\u8005\u4f20\u9012\u6570\u636e\uff0c\u7136\u540e\u5728\u9700\u8981\u7684\u65f6\u5019\u901a\u8fc7unserialize<\/code>\u5c06\u5b57\u7b26\u4e32\u53cd\u5e8f\u5217\u5316\u6210\u5bf9\u8c61\u8fdb\u884c\u4f7f\u7528\u3002<\/em><\/p>\n\n\n\n
class Car {\n    public $name = 'car';\n}\n$a = new Car();\n$str = serialize($a); \/\/\u5bf9\u8c61\u5e8f\u5217\u5316\u6210\u5b57\u7b26\u4e32\necho $str.'<br>';\n$b = unserialize($str); \/\/\u53cd\u5e8f\u5217\u5316\u4e3a\u5bf9\u8c61\nvar_dump($b);\n<\/code><\/pre>\n\n\n\n
\u4e8c\u3001\u5f02\u5e38<\/h2>\n\n\n\n
\u4ecePHP5\u5f00\u59cb\uff0cPHP\u652f\u6301\u5f02\u5e38\u5904\u7406\uff0c\u5f02\u5e38\u5904\u7406\u662f\u9762\u5411\u5bf9\u8c61\u4e00\u4e2a\u91cd\u8981\u7279\u6027\uff0cPHP\u4ee3\u7801\u4e2d\u7684\u5f02\u5e38\u901a\u8fc7throw\u629b\u51fa\uff0c\u5f02\u5e38\u629b\u51fa\u4e4b\u540e\uff0c\u540e\u9762\u7684\u4ee3\u7801\u5c06\u4e0d\u4f1a\u518d\u88ab\u6267\u884c\u3002<\/p>\n\n\n\n
\u65e2\u7136\u629b\u51fa\u5f02\u5e38\u4f1a\u4e2d\u65ad\u7a0b\u5e8f\u6267\u884c\uff0c\u90a3\u4e48\u4e3a\u4ec0\u4e48\u8fd8\u9700\u8981\u4f7f\u7528\u5f02\u5e38\u5904\u7406\uff1f<\/p>\n\n\n\n
\u5f02\u5e38\u629b\u51fa\u88ab\u7528\u4e8e\u5728\u9047\u5230\u672a\u77e5\u9519\u8bef\uff0c\u6216\u8005\u4e0d\u7b26\u5408\u9884\u5148\u8bbe\u5b9a\u7684\u6761\u4ef6\u65f6\uff0c\u901a\u77e5\u5ba2\u6237\u7a0b\u5e8f\uff0c\u4ee5\u4fbf\u8fdb\u884c\u5176\u4ed6\u76f8\u5173\u5904\u7406\uff0c\u4e0d\u81f3\u4e8e\u4f7f\u7a0b\u5e8f\u76f4\u63a5\u62a5\u9519\u4e2d\u65ad\u3002<\/p>\n\n\n\n
\u5f53\u4ee3\u7801\u4e2d\u4f7f\u7528\u4e86try catch\u7684\u65f6\u5019\uff0c\u629b\u51fa\u7684\u5f02\u5e38\u4f1a\u5728catch\u4e2d\u6355\u83b7\uff0c\u5426\u5219\u4f1a\u76f4\u63a5\u4e2d\u65ad<\/p>\n\n\n\n
1\u3001\u8bed\u6cd5<\/h3>\n\n\n\n
<\/em><\/p>\n\n\n\n
 try{\n            \/\/\u53ef\u80fd\u51fa\u73b0\u9519\u8bef\u6216\u5f02\u5e38\u7684\u4ee3\u7801\n            \/\/catch\u8868\u793a\u6355\u83b7\uff0cException\u662fphp\u5df2\u5b9a\u4e49\u597d\u7684\u5f02\u5e38\u7c7b\n        } catch(Exception $e){\n            \/\/\u5bf9\u5f02\u5e38\u5904\u7406\uff0c\u65b9\u6cd5\uff1a\n                \/\/1\u3001\u81ea\u5df1\u5904\u7406\n                \/\/2\u3001\u4e0d\u5904\u7406\uff0c\u5c06\u5176\u518d\u6b21\u629b\u51fa\n        }\n<\/code><\/pre>\n\n\n\n
\u5904\u7406\u5904\u7406\u7a0b\u5e8f\u5e94\u5f53\u5305\u62ec\uff1a
Try:\u4f7f\u7528\u5f02\u5e38\u7684\u51fd\u6570\u5e94\u8be5\u4f4d\u4e8e \"try\" \u4ee3\u7801\u5757\u5185\u3002\u5982\u679c\u6ca1\u6709\u89e6\u53d1\u5f02\u5e38\uff0c\u5219\u4ee3\u7801\u5c06\u7167\u5e38\u7ee7\u7eed\u6267\u884c\u3002\u4f46\u662f\u5982\u679c\u5f02\u5e38\u88ab\u89e6\u53d1\uff0c\u4f1a\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38\u3002
Throw:\u8fd9\u91cc\u89c4\u5b9a\u5982\u4f55\u89e6\u53d1\u5f02\u5e38\u3002\u6ce8\u610f\uff1a\u6bcf\u4e00\u4e2a \"throw\" \u5fc5\u987b\u5bf9\u5e94\u81f3\u5c11\u4e00\u4e2a \"catch\"\uff0c\u5f53\u7136\u53ef\u4ee5\u5bf9\u5e94\u591a\u4e2a\"catch\"
Catch - \"catch\" \u4ee3\u7801\u5757\u4f1a\u6355\u83b7\u5f02\u5e38\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u5f02\u5e38\u4fe1\u606f\u7684\u5bf9\u8c61\u3002<\/p>\n\n\n\n
\u629b\u5f02\u5e38\u6f14\u793a\uff1a<\/em><\/p>\n\n\n\n
\/\/\u521b\u5efa\u53ef\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38\u7684\u51fd\u6570\nfunction checkNum($number){\n     if($number>1){\n         throw new Exception(\"\u5f02\u5e38\u63d0\u793a-\u6570\u5b57\u5fc5\u987b\u5c0f\u4e8e\u7b49\u4e8e1\");\n     }\n     return true;\n }\n \n\/\/\u5728 \"try\" \u4ee3\u7801\u5757\u4e2d\u89e6\u53d1\u5f02\u5e38\n try{\n     checkNum(2);\n     \/\/\u5982\u679c\u5f02\u5e38\u88ab\u629b\u51fa\uff0c\u90a3\u4e48\u4e0b\u9762\u4e00\u884c\u4ee3\u7801\u5c06\u4e0d\u4f1a\u88ab\u8f93\u51fa\n     echo '\u5982\u679c\u80fd\u770b\u5230\u8fd9\u4e2a\u63d0\u793a\uff0c\u8bf4\u660e\u4f60\u7684\u6570\u5b57\u5c0f\u4e8e\u7b49\u4e8e1';\n }catch(Exception $e){\n     \/\/\u6355\u83b7\u5f02\u5e38\n     echo '\u6355\u83b7\u5f02\u5e38: ' .$e->getMessage();\n }\n<\/code><\/pre>\n\n\n\n
\u4e0a\u9762\u4ee3\u7801\u5c06\u83b7\u5f97\u7c7b\u4f3c\u8fd9\u6837\u4e00\u4e2a\u9519\u8bef\uff1a<\/p>\n\n\n\n
\u6355\u83b7\u5f02\u5e38:: \u5f02\u5e38\u63d0\u793a-\u6570\u5b57\u5fc5\u987b\u5c0f\u4e8e\u7b49\u4e8e1<\/p>\n\n\n\n
\u6f14\u793a\u89e3\u91ca\uff1a<\/p>\n\n\n\n
\u4e0a\u9762\u7684\u4ee3\u7801\u629b\u51fa\u4e86\u4e00\u4e2a\u5f02\u5e38\uff0c\u5e76\u6355\u83b7\u4e86\u5b83\uff1a<\/p>\n\n\n\n
\u521b\u5efa checkNum() \u51fd\u6570\u3002\u5b83\u68c0\u6d4b\u6570\u5b57\u662f\u5426\u5927\u4e8e 1\u3002\u5982\u679c\u662f\uff0c\u5219\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38\u3002
\u5728 \"try\" \u4ee3\u7801\u5757\u4e2d\u8c03\u7528 checkNum() \u51fd\u6570\u3002
checkNum() \u51fd\u6570\u4e2d\u7684\u5f02\u5e38\u88ab\u629b\u51fa
\"catch\" \u4ee3\u7801\u5757\u63a5\u6536\u5230\u8be5\u5f02\u5e38\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u5f02\u5e38\u4fe1\u606f\u7684\u5bf9\u8c61 $e<\/code>\u3002
\u901a\u8fc7\u4ece\u8fd9\u4e2a exception \u5bf9\u8c61\u8c03\u7528 $e->getMessage()<\/code>\uff0c\u8f93\u51fa\u6765\u81ea\u8be5\u5f02\u5e38\u7684\u9519\u8bef\u6d88\u606f<\/p>\n\n\n\n
2\u3001\u5f02\u5e38\u5904\u7406\u7c7b<\/h3>\n\n\n\n
PHP\u5177\u6709\u5f88\u591a\u5f02\u5e38\u5904\u7406\u7c7b\uff0c\u5176\u4e2dException\u662f\u6240\u6709\u5f02\u5e38\u5904\u7406\u7684\u57fa\u7c7b\u3002<\/p>\n\n\n\n
Exception\u5177\u6709\u51e0\u4e2a\u57fa\u672c\u5c5e\u6027\u4e0e\u65b9\u6cd5\uff0c\u5176\u4e2d\u5305\u62ec\u4e86\uff1a<\/p>\n\n\n\n
message \u5f02\u5e38\u6d88\u606f\u5185\u5bb9
code \u5f02\u5e38\u4ee3\u7801
file \u629b\u51fa\u5f02\u5e38\u7684\u6587\u4ef6\u540d
line \u629b\u51fa\u5f02\u5e38\u5728\u8be5\u6587\u4ef6\u7684\u884c\u6570<\/p>\n\n\n\n
\u5176\u4e2d\u5e38\u7528\u7684\u65b9\u6cd5\u6709\uff1a<\/p>\n\n\n\n
getTrace \u83b7\u53d6\u5f02\u5e38\u8ffd\u8e2a\u4fe1\u606f
getTraceAsString \u83b7\u53d6\u5f02\u5e38\u8ffd\u8e2a\u4fe1\u606f\u7684\u5b57\u7b26\u4e32
getMessage \u83b7\u53d6\u51fa\u9519\u4fe1\u606f<\/p>\n\n\n\n
\u5982\u679c\u5fc5\u8981\u7684\u8bdd\uff0c\u53ef\u4ee5\u901a\u8fc7\u7ee7\u627fException\u7c7b\u6765\u5efa\u7acb\u81ea\u5b9a\u4e49\u7684\u5f02\u5e38\u5904\u7406\u7c7b\u3002<\/em><\/p>\n\n\n\n
\/\/\u81ea\u5b9a\u4e49\u7684\u5f02\u5e38\u7c7b\uff0c\u7ee7\u627f\u4e86PHP\u7684\u5f02\u5e38\u57fa\u7c7bException\nclass MyException extends Exception {\n    function getInfo() {\n        return '\u81ea\u5b9a\u4e49\u9519\u8bef\u4fe1\u606f';\n    }\n}\n\ntry {\n    \/\/\u4f7f\u7528\u5f02\u5e38\u7684\u51fd\u6570\u5e94\u8be5\u4f4d\u4e8e \"try\"  \u4ee3\u7801\u5757\u5185\u3002\u5982\u679c\u6ca1\u6709\u89e6\u53d1\u5f02\u5e38\uff0c\u5219\u4ee3\u7801\u5c06\u7167\u5e38\u7ee7\u7eed\u6267\u884c\u3002\u4f46\u662f\u5982\u679c\u5f02\u5e38\u88ab\u89e6\u53d1\uff0c\u4f1a\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38\u3002\n    throw new MyException('error');\/\/\u8fd9\u91cc\u89c4\u5b9a\u5982\u4f55\u89e6\u53d1\u5f02\u5e38\u3002\u6ce8\u610f\uff1a\u6bcf\u4e00\u4e2a \"throw\" \u5fc5\u987b\u5bf9\u5e94\u81f3\u5c11\u4e00\u4e2a \"catch\"\uff0c\u5f53\u7136\u53ef\u4ee5\u5bf9\u5e94\u591a\u4e2a\"catch\"\n} catch(Exception $e) {\/\/\"catch\" \u4ee3\u7801\u5757\u4f1a\u6355\u83b7\u5f02\u5e38\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u5f02\u5e38\u4fe1\u606f\u7684\u5bf9\u8c61\n    echo $e->getInfo();\/\/\u83b7\u53d6\u81ea\u5b9a\u4e49\u7684\u5f02\u5e38\u4fe1\u606f\n    echo $e->getMessage();\/\/\u83b7\u53d6\u7ee7\u627f\u81ea\u57fa\u7c7b\u7684getMessage\u4fe1\u606f\n}\n<\/code><\/pre>\n\n\n\n
3\u3001\u6355\u83b7\u5f02\u5e38\u4fe1\u606f<\/h3>\n\n\n\n
\u5728\u4e86\u89e3\u4e86\u5f02\u5e38\u5904\u7406\u7684\u57fa\u672c\u539f\u7406\u4e4b\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7try catch\u6765\u6355\u83b7\u5f02\u5e38\uff0c\u6211\u4eec\u5c06\u6267\u884c\u7684\u4ee3\u7801\u653e\u5728try\u4ee3\u7801\u5757\u4e2d\uff0c\u4e00\u65e6\u5176\u4e2d\u7684\u4ee3\u7801\u629b\u51fa\u5f02\u5e38\uff0c\u5c31\u80fd\u5728catch\u4e2d\u6355\u83b7\u3002<\/p>\n\n\n\n
\u8fd9\u91cc\u6211\u4eec\u53ea\u662f\u901a\u8fc7\u6848\u4f8b\u6765\u4e86\u89e3try catch\u7684\u673a\u5236\u4ee5\u53ca\u5f02\u5e38\u6355\u83b7\u7684\u65b9\u6cd5\uff0c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u4e0d\u4f1a\u8f7b\u6613\u7684\u629b\u51fa\u5f02\u5e38\uff0c\u53ea\u6709\u5728\u6781\u7aef\u60c5\u51b5\u6216\u8005\u975e\u5e38\u91cd\u8981\u7684\u60c5\u51b5\u4e0b\uff0c\u624d\u4f1a\u629b\u51fa\u5f02\u5e38\uff0c\u629b\u51fa\u5f02\u5e38\uff0c\u53ef\u4ee5\u4fdd\u969c\u7a0b\u5e8f\u7684\u6b63\u786e\u6027\u4e0e\u5b89\u5168\uff0c\u907f\u514d\u5bfc\u81f4\u4e0d\u53ef\u9884\u77e5\u7684bug\u3002<\/p>\n\n\n\n
\u4e00\u822c\u7684\u5f02\u5e38\u5904\u7406\u6d41\u7a0b\u4ee3\u7801\u4e3a\uff1a<\/em><\/p>\n\n\n\n
try {\n    throw new Exception('wrong');\n} catch(Exception $ex) {\n    echo 'Error:'.$ex->getMessage().'<br>';\n    echo $ex->getTraceAsString().'<br>';\n}\necho '\u5f02\u5e38\u5904\u7406\u540e\uff0c\u7ee7\u7eed\u6267\u884c\u5176\u4ed6\u4ee3\u7801';\n<\/code><\/pre>\n\n\n\n
4\u3001\u83b7\u53d6\u9519\u8bef\u884c\u6570\u7b49\u4fe1\u606f<\/h3>\n\n\n\n
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\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u901a\u5e38\u4f1a\u83b7\u53d6\u8db3\u591f\u591a\u7684\u5f02\u5e38\u4fe1\u606f\uff0c\u7136\u540e\u5199\u5165\u5230\u9519\u8bef\u65e5\u5fd7\u4e2d\u3002<\/p>\n\n\n\n
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\u4f8b\u5982\uff1a<\/em><\/p>\n\n\n\n
<?php\ntry {\n    throw new Exception('wrong');\n} catch(Exception $ex) {\n    $msg = 'Error:'.$ex->getMessage().\"\\n\";\n    $msg.= $ex->getTraceAsString().\"\\n\";\n    $msg.= '\u5f02\u5e38\u884c\u53f7\uff1a'.$ex->getLine().\"\\n\";\n    $msg.= '\u6240\u5728\u6587\u4ef6\uff1a'.$ex->getFile().\"\\n\";\n    \/\/\u5c06\u5f02\u5e38\u4fe1\u606f\u8bb0\u5f55\u5230\u65e5\u5fd7\u4e2d\n PHP\u5f02\u5e38\u5904\u7406\u4e4b   file_put_contents('error.log', $msg);\n}<\/code><\/pre>\n\n\n\n
\u4f5c\u8005\uff1a\u5927\u5634\u8778\u725b
\u94fe\u63a5\uff1ahttps:\/\/www.jianshu.com\/p\/d3edc23718fc
\u6765\u6e90\uff1a\u7b80\u4e66
\u8457\u4f5c\u6743\u5f52\u4f5c\u8005\u6240\u6709\u3002\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u8054\u7cfb\u4f5c\u8005\u83b7\u5f97\u6388\u6743\uff0c\u975e\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u51fa\u5904\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u57fa\u7840\u77e5\u8bc6\u8bf4\u7684\u6700\u6e05\u695a\u7684\u4e00\u4e2a\u5185\u5bb9\u4e86\u3002\u611f\u8c22\u4f5c\u8005\uff08\u67e5\u770b\u539f\u6587\uff09\u3002 \u4e00\u3001PHP\u7c7b\u548c\u5bf9\u8c61 \u7c7b\u662f\u9762\u5411\u5bf9\u8c61\u7a0b\u5e8f\u8bbe\u8ba1\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u901a\u2026 Read More »<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-1104","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/1104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1104"}],"version-history":[{"count":2,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/1104\/revisions"}],"predecessor-version":[{"id":1106,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/1104\/revisions\/1106"}],"wp:attachment":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}