{"id":30616,"date":"2023-12-31T12:42:42","date_gmt":"2023-09-17T16:40:27","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e4%b8%ad%e7%b1%bb%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95%ef%bc%9a\/"},"modified":"2025-08-12T20:01:48","modified_gmt":"2025-08-12T12:01:48","slug":"php%e4%b8%ad%e7%b1%bb%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95%ef%bc%9a","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e4%b8%ad%e7%b1%bb%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95%ef%bc%9a\/","title":{"rendered":"PHP\u4e2d\u7c7b\u7684\u4f7f\u7528\u65b9\u6cd5\uff1a"},"content":{"rendered":"

\u5728\u8fd9\u91cc\uff0c\u6211\u60f3\u603b\u7ed3\u4e00\u4e0b\u4e00\u822c\u7c7b\u3001\u62bd\u8c61\u7c7b\u3001trait\u548c\u63a5\u53e3\u7b49\u7684\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n

\u7c7b\u7684\u4f7f\u7528\u65b9\u6cd5\u5728\u4e2d\u6587\u4e2d\uff0c\u7c7b\u662f\u5c06\u53d8\u91cf\u3001\u5e38\u91cf\u548c\u65b9\u6cd5\u96c6\u5408\u5728\u4e00\u8d77\u7684\u7ed3\u6784\u3002\u6309\u7167\u5404\u81ea\u7684\u89d2\u8272\u521b\u5efa\u7c7b\uff0c\u5e76\u4f7f\u7528\u7c7b\u7684\u5b9e\u4f8b\u6765\u8fd0\u884c\u7a0b\u5e8f\uff0c\u8fd9\u88ab\u79f0\u4e3a\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u3002<\/p>\n
class<\/span> Product<\/span>{<\/span>\r\n    \/\/\u516c\u958b\u6761\u4ef6\u306b\u306fpublic\u3001protected\u3001private\u304c\u3042\u308b\u3002<\/span>\r\n    \/\/ public\u306f\u5916\u304b\u3089\u4f7f\u3048\u308b\u2192\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5f8c\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3068\u3044\u3046\u3053\u3068<\/span>\r\n    \/\/ protected\u306f\u81ea\u5206\u3068\u7d99\u627f\u5148\u306e\u30af\u30e9\u30b9\u304c\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u308b<\/span>\r\n    \/\/ private\u306f\u30af\u30e9\u30b9\u5185\u3067\u3057\u304b\u30d7\u30ed\u30d1\u30c6\u30a3\u3084\u30e1\u30bd\u30c3\u30c9\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u2192\u5909\u6570\u306a\u3069\u306fprivate\u304c\u5b89\u5168(\u5916\u304b\u3089\u66f8\u304d\u63db\u3048\u3089\u308c\u306a\u3044\u304b\u3089)<\/span>\r\n\r\n    \/\/ \u5909\u6570<\/span>\r\n    private<\/span> $product<\/span> =<\/span> [];<\/span>\r\n\r\n    \/\/ \u95a2\u6570<\/span>\r\n    \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30c8\u30e1\u30bd\u30c3\u30c9\u306f\u30af\u30e9\u30b9\u304c\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3055\u308c\u308b\u969b\u306b\u547c\u3073\u51fa\u3055\u308c\u308b<\/span>\r\n    \/\/ $this\u306fnew\u306b\u3088\u308a\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3057\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6307\u3059<\/span>\r\n    function<\/span> __construct<\/span>(<\/span>$product<\/span>=<\/span>null<\/span>){<\/span>\r\n        $this<\/span>-><\/span>product<\/span>[]<\/span> =<\/span> $product<\/span>;<\/span> \r\n    }<\/span>\r\n\r\n    public<\/span> function<\/span> getProduct<\/span>(){<\/span>\r\n        $products<\/span> =<\/span> $this<\/span>-><\/span>product<\/span>;<\/span>\r\n        foreach<\/span>(<\/span>$products<\/span> as<\/span> $product<\/span>){<\/span>\r\n            echo<\/span> $product<\/span>;<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n\r\n    public<\/span> function<\/span> addProduct<\/span>(<\/span>$item<\/span>){<\/span>\r\n        $this<\/span>-><\/span>product<\/span>[]<\/span> =<\/span> $item<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    \/\/ static\u306f\u30af\u30e9\u30b9\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3067\u304d\u308b<\/span>\r\n    \/\/ Class::\u30e1\u30bd\u30c3\u30c9\u540d()\u3067\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u308b<\/span>\r\n    public<\/span> static<\/span> function<\/span> getStaticProduct<\/span>(<\/span>$str<\/span>){<\/span>\r\n        echo<\/span> $str<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
$instance<\/span> =<\/span> new Product(<\/span>'\u30a4\u30f3\u30d7\u30c3\u30c8'<\/span>)<\/span>;<\/span>\r\n\r\n$instance<\/span>->getProduct()<\/span>;<\/span>\r\n=><\/span> '\u30a4\u30f3\u30d7\u30c3\u30c8'<\/span>\r\n\r\n$instance<\/span>->addProduct(<\/span>'\u8ffd\u52a0'<\/span>)<\/span>;<\/span>\r\n$instance<\/span>->getProduct()<\/span>;<\/span>\r\n=><\/span> '\u30a4\u30f3\u30d7\u30c3\u30c8'<\/span>\r\n=><\/span> '\u8ffd\u52a0'<\/span>\r\n\r\nProduct::getStaticProduct(<\/span>'\u9759\u7684'<\/span>)<\/span>;<\/span>\r\n=><\/span> '\u9759\u7684'<\/span>\r\n<\/code><\/pre>\n
\u7ee7\u627f
\n\u4e00\u4e2a\u7c7b\u5177\u6709\u5355\u4e00\u7ee7\u627f\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u7ee7\u627f\u4e00\u4e2a\u7c7b\u3002
\n\u5b50\u7c7b\u53ef\u4ee5\u4f7f\u7528\u7236\u7c7b\u7684\u53d8\u91cf\u548c\u65b9\u6cd5\u7b49\u3002<\/p>\n
class<\/span> Parente<\/span>{<\/span>\r\n  protected<\/span> $parentVariable<\/span> =<\/span> '\u89aa\u306e\u5909\u6570\u3067\u3059'<\/span>;<\/span>\r\n\r\n  public<\/span> function<\/span> parentfunc<\/span>(){<\/span>\r\n    echo<\/span> \"\u89aa\u306e\u95a2\u6570\u3067\u3059\"<\/span>;<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\nclass<\/span> Child<\/span> extends<\/span> Parente<\/span>{<\/span>\r\n    public<\/span> function<\/span> test<\/span>(){<\/span>\r\n      echo<\/span> $this<\/span>-><\/span>parentVariable<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\n$instance<\/span> =<\/span> new<\/span> Child<\/span>();<\/span>\r\n\r\n$instance<\/span>-><\/span>test<\/span>();<\/span>\r\n=><\/span> '\u89aa\u306e\u5909\u6570\u3067\u3059'<\/span> \/\/ \u5909\u6570\u306e\u30a2\u30af\u30bb\u30b9\u4fee\u98fe\u5b50\u306fprotected\u306a\u306e\u3067\u7d99\u627f\u5148\u306e\u30af\u30e9\u30b9\u5185\u3067\u3082\u4f7f\u3048\u308b<\/span>\r\n\r\n$instance<\/span>-><\/span>parentfunc<\/span>();<\/span>\r\n=><\/span> '\u89aa\u306e\u95a2\u6570\u3067\u3059'<\/span>\r\n<\/code><\/pre>\n
\u754c\u9762 (ji\u00e8\u8981\u6c42\u7ee7\u627f\u7c7b\u4e2d\u7684\u65b9\u6cd5\u3002
\n\u63a5\u53e3\u5185\u6240\u5199\u7684\u65b9\u6cd5\u5fc5\u987b\u5728\u7ee7\u627f\u7c7b\u4e2d\u4f7f\u7528\u3002
\n\u63a5\u53e3\u53ea\u80fd\u5199\u7a7a\u7684\u516c\u6709\u65b9\u6cd5\uff0c\u4e0d\u80fd\u5b9e\u4f8b\u5316\u3002
\n\u7ee7\u627f\u65b9\u5f0f\u4f7f\u7528implements\uff0c\u5e76\u4e14\u53ef\u4ee5\u7ee7\u627f\u4efb\u610f\u6570\u91cf\u3002<\/p>\n
interface<\/span> ExampleInterface<\/span>{<\/span>\r\n    \/\/ hello\u30e1\u30bd\u30c3\u30c9\u3092\u7d99\u627f\u5148\u306e\u30af\u30e9\u30b9\u306b\u7f6e\u3044\u3066\u5b9a\u7fa9\u3057\u306a\u3051\u308c\u3070\u30a8\u30e9\u30fc\u304c\u51fa\u308b<\/span>\r\n    public<\/span> function<\/span> hello<\/span>();<\/span>\r\n}<\/span>\r\n\r\ninterface<\/span> ExampleInterface2<\/span>{<\/span>\r\n    \/\/ goodMorning\u30e1\u30bd\u30c3\u30c9\u3092\u7d99\u627f\u5148\u306e\u30af\u30e9\u30b9\u306b\u5f37\u5236<\/span>\r\n    public<\/span> function<\/span> goodMorning<\/span>();<\/span>\r\n}<\/span>\r\n\r\nclass<\/span> Example<\/span> implements<\/span> ExampleInterface<\/span>,<\/span> ExampleInterface2<\/span>{<\/span>\r\n    public<\/span> function<\/span> hello<\/span>(){<\/span>\r\n        echo<\/span> '\u3053\u3093\u306b\u3061\u306f'<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    public<\/span> function<\/span> goodMorning<\/span>(){<\/span>\r\n        echo<\/span> '\u304a\u306f\u3088\u3046'<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8fd9\u4e2a\u65f6\u5019\u4f7f\u7528\u7684\u539f\u56e0\u4e0d\u660e\u786e\uff0c\u4f46\u6211\u60f3\u5728\u67e5\u770b\u6e90\u4ee3\u7801\u7684\u540c\u65f6\u52a0\u6df1\u7406\u89e3\u3002<\/p>\n
\u62bd\u8c61\u7c7b
\n\u62bd\u8c61\u7c7b\u5c31\u50cf\u7ed9\u7c7b\u8d4b\u4e88\u4e86\u63a5\u53e3\u7684\u529f\u80fd\u4e00\u6837\u3002\uff08\u65e0\u6cd5\u5b9e\u4f8b\u5316\uff09
\n\u62bd\u8c61\u7c7b\u5b9a\u4e49\u4e3a\u7c7b\u540d\u52a0\u4e0aAbstract\u3002
\n\u4e3a\u4e86\u65b9\u4fbf\u7406\u89e3\uff0c\u5f88\u591a\u65f6\u5019\u5728\u7c7b\u540d\u4e2d\u52a0\u4e0aAbstract\u3002<\/p>\n
\u5728\u65b9\u6cd5\u5b9a\u4e49\u4e4b\u524d\u4f7f\u7528abstract public(protected) \u301c\u4f1a\u5f3a\u5236\u5728\u7ee7\u627f\u7c7b\u4e2d\u63d0\u4f9b\u8be5\u65b9\u6cd5\u3002<\/p>\n
<?php<\/span>\r\n\r\nabstract<\/span> class<\/span> ExampleAbstract<\/span>{<\/span>\r\n  protected<\/span> $abstractVariable<\/span> =<\/span> '\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u5909\u6570\u3067\u3059'<\/span>;<\/span>\r\n\r\n  public<\/span> function<\/span> goodEvening<\/span>(){<\/span>\r\n    echo<\/span> '\u3053\u3093\u3070\u3093\u306f'<\/span>;<\/span>    \r\n  }<\/span>\r\n\r\n  abstract<\/span> protected<\/span> function<\/span> hello<\/span>();<\/span>\r\n}<\/span>\r\n\r\nclass<\/span> Example<\/span> extends<\/span> ExampleAbstract<\/span>{<\/span>\r\n  public<\/span> function<\/span> hello<\/span>(){<\/span>\r\n    echo<\/span> '\u3053\u3093\u306b\u3061\u306f'<\/span>;<\/span>\r\n    echo<\/span> $this<\/span>-><\/span>abstractVariable<\/span>;<\/span>\r\n  }<\/span>\r\n\r\n  public<\/span> function<\/span> goodMorning<\/span>(){<\/span>\r\n    echo<\/span> '\u304a\u306f\u3088\u3046'<\/span>;<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\n$instance<\/span> =<\/span> new<\/span> Example<\/span>();<\/span>\r\n$instance<\/span>-><\/span>hello<\/span>();<\/span>\r\n=><\/span> '\u3053\u3093\u306b\u3061\u306f\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u5909\u6570\u3067\u3059'<\/span>;<\/span>\r\n$instance<\/span>-><\/span>goodEvening<\/span>();<\/span>\r\n=><\/span> '\u3053\u3093\u3070\u3093\u306f'<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u7279\u8d28 (t\u00e8 zh\u00ec)\u5728\u4e2d\u56fd\uff0c\u539f\u751f\u7684\u4e2d\u6587\u6709\u4e00\u4e2a\u9009\u9879\u662f”\u4e00\u4e2a\u7c7b\u53ea\u80fd\u7ee7\u627f\u4e00\u4e2a\u7c7b\uff0c\u4f46\u53ef\u4ee5\u7ee7\u627f\u591a\u4e2a\u7279\u5f81\u7684\u7c7b\uff0c\u7c7b\u4f3c\u4e8e\u53ef\u4ee5\u5b9e\u4f8b\u5316\u7684\u7c7b\uff08\u4f7f\u7528trait trait name\u65f6\uff0c\u8981\u5728\u60f3\u4f7f\u7528\u7684\u7c7b\u5185\u4f7f\u7528use\uff09”\u3002<\/p>\n
trait<\/span> ExampleTrait<\/span>{<\/span>\r\n  protected<\/span> $traitVariable<\/span> =<\/span> '\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u5909\u6570\u3067\u3059'<\/span>;<\/span>\r\n\r\n  private<\/span> $traitPrivateVariable<\/span> =<\/span> '\u30c8\u30ec\u30a4\u30c8\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u5909\u6570\u3067\u3059'<\/span>;<\/span>\r\n\r\n  public<\/span> function<\/span> hello<\/span>(){<\/span>\r\n    echo<\/span> '\u3053\u3093\u306b\u3061\u306f'<\/span>;<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\ntrait<\/span> ExampleTrait2<\/span>{<\/span>\r\n  public<\/span> function<\/span> goodEvening<\/span>(){<\/span>\r\n    echo<\/span> '\u3053\u3093\u3070\u3093\u306f'<\/span>;<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\nclass<\/span> Example<\/span>{<\/span> \r\n  use<\/span> ExampleTrait<\/span>;<\/span>\r\n  use<\/span> ExampleTrait2<\/span>;<\/span>\r\n\r\n  public<\/span> function<\/span> goodMorning<\/span>(){<\/span>\r\n    echo<\/span> '\u304a\u306f\u3088\u3046'<\/span>;<\/span>\r\n    echo<\/span> $this<\/span>-><\/span>traitVariable<\/span>;<\/span>\r\n    echo<\/span> $this<\/span>-><\/span>traitPrivateVariable<\/span>;<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\n$instance<\/span> =<\/span> new<\/span> Example<\/span>();<\/span>\r\n$instance<\/span>-><\/span>goodMorning<\/span>();<\/span>\r\n=><\/span>'\u304a\u306f\u3088\u3046\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u5909\u6570\u3067\u3059\u30c8\u30ec\u30a4\u30c8\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u5909\u6570\u3067\u3059'<\/span>\r\n<\/code><\/pre>\n
\u5728\u4f7f\u7528trait\u7684\u7c7b\u4e2d\uff0c\u6211\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u5728trait\u5185\u5b9a\u4e49\u7684\u79c1\u6709\u53d8\u91cf…… \u8fd9\u8ba9\u6211\u89c9\u5f97trait\u975e\u5e38\u6613\u7528\u3002\u5b83\u5c31\u50cf\u662f\u6269\u5c55\u4e86\u7c7b\u7684\u529f\u80fd\u3002<\/p>\n
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