{"id":30764,"date":"2022-11-06T12:36:55","date_gmt":"2024-02-11T22:08:09","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php-di%e4%bb%8b%e7%bb%8d\/"},"modified":"2025-08-12T20:43:05","modified_gmt":"2025-08-12T12:43:05","slug":"php-di%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php-di%e4%bb%8b%e7%bb%8d\/","title":{"rendered":"PHP-DI\u4ecb\u7ecd"},"content":{"rendered":"

\u5173\u4e8e\u8fd9\u7bc7\u6587\u7ae0\u6700\u8fd1\u6709\u5f88\u591aPHP\u6846\u67b6\u90fd\u9ed8\u8ba4\u914d\u5907\u4e86DI\u5e93\uff0c\u4f46\u7531\u4e8e\u6211\u5e0c\u671b\u5c3d\u91cf\u4e0d\u4f9d\u8d56\u6846\u67b6\u7684\u529f\u80fd\u6765\u8fdb\u884cDI\uff0c\u6240\u4ee5\u6211\u5c1d\u8bd5\u4e86\u901a\u8fc7\u5916\u90e8\u5e93\u6765\u5b9e\u73b0DI\u3002<\/p>\n

\u6211\u5728\u7814\u7a76PHP\u7684\u4f9d\u8d56\u6ce8\u5165\u65f6\u53d1\u73b0\u4e86\u51e0\u79cd\u9009\u9879\uff0c\u4f46\u8fd9\u6b21\u6211\u60f3\u63a2\u7d22\u4e00\u4e0bPHP-DI\uff0c\u5e76\u5728\u8fd9\u91cc\u8bb0\u5f55\u5176\u57fa\u672c\u7528\u6cd5\u3002\u6211\u53ea\u8bb0\u5f55\u4e86\u81ea\u5df1\u60f3\u4e86\u89e3\u7684\u5185\u5bb9\uff0c\u5982\u679c\u4f60\u60f3\u4e86\u89e3\u66f4\u8be6\u7ec6\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u8bf7\u53c2\u8003\u5b98\u65b9\u7f51\u7ad9\u3002<\/p>\n

\u73af\u5883\u6211\u6b63\u5728\u4e00\u4e2a\u53ea\u6709 PHP \u548c Composer \u7684\u6700\u7b80\u73af\u5883\u4e0b\u8fdb\u884c\u5c1d\u8bd5\u3002<\/p>\n
$ <\/span>php -v<\/span>\r\nPHP 7.3.0 (<\/span>cli)<\/span> (<\/span>built: Dec  6 2018 02:17:00)<\/span> (<\/span> ZTS MSVC15 (<\/span>Visual C++ 2017)<\/span> x86 )<\/span>\r\n\r\n$ <\/span>composer -v<\/span>\r\nComposer version 1.8.0 2018-12-03 10:31:16\r\n<\/code><\/pre>\n
\u5f15\u5165\u9996\u5148\uff0c\u4f7f\u7528composer\u5728PHP\u4e2d\u5b89\u88c5PHP-DI\u3002<\/p>\n
composer require php-di\/php-di\r\n<\/code><\/pre>\n
\u5b89\u88c5\u540e\u7684 composer.json \u6587\u4ef6\u6dfb\u52a0\u4e86\u7c7b\u4f3c\u4ee5\u4e0b\u5185\u5bb9\u7684\u884c\uff1a<\/p>\n
{<\/span>\r\n    \"name\"<\/span>:<\/span> \"hirodragon\/testapp\"<\/span>,<\/span>\r\n    \/\/<\/span> ...<\/span>\r\n    \"require\"<\/span>:<\/span> {<\/span>\r\n        \"php-di\/php-di\"<\/span>:<\/span> \"^6.0\"<\/span> \/\/<\/span> \u2190\u8ffd\u52a0\u3055\u308c\u3066\u3044\u308b<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u6b64\u5916\uff0c\u5728 [\u9879\u76ee]\/vendor\/composer\/autoload_psr4.php \u6587\u4ef6\u4e2d\u8fd8\u6dfb\u52a0\u4e86\u81ea\u52a8\u52a0\u8f7d\u7684\u8bbe\u7f6e\u3002<\/p>\n
<?php<\/span>\r\nreturn<\/span> array<\/span>(<\/span>\r\n    \/\/ ...\u7701\u7565<\/span>\r\n    'DI\\\\'<\/span> =><\/span> array<\/span>(<\/span>$vendorDir<\/span> .<\/span> '\/php-di\/php-di\/src'<\/span>),<\/span>\r\n);<\/span>\r\n<\/code><\/pre>\n
\u4e00\u65e6\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u7531\u4e8e\u5df2\u7ecf\u5b8c\u6210\u4e86\u81ea\u52a8\u52a0\u8f7d\u8bbe\u7f6e\u7b49\u64cd\u4f5c\uff0c\u56e0\u6b64\u60a8\u53ef\u4ee5\u7acb\u5373\u5728php\u6e90\u4ee3\u7801\u4e2d\u4f7f\u7528DI\u5bb9\u5668\u5b9e\u4f8b\u3002<\/p>\n
\u8ba9\u6211\u4eec\u5c1d\u8bd5\u521b\u5efa\u4e00\u4e2aindex.php\u6587\u4ef6\uff0c\u5e76\u6267\u884c\u4ee5\u4e0b\u4ee3\u7801\u3002<\/p>\n
<?php<\/span>\r\nrequire_once<\/span> 'vendor\/autoload.php'<\/span>;<\/span>\r\n\r\n$container<\/span> =<\/span> new<\/span> DI\\Container<\/span>();<\/span>\r\nvar_dump<\/span>(<\/span>$container<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u8fd0\u884c\u7ed3\u679c<\/p>\n
$ <\/span>php index.php\r\nobject(<\/span>DI\\C<\/span>ontainer)<\/span>#2 (8) {<\/span>\r\n    # ...\u7701\u7565<\/span>\r\n}<\/span> \r\n<\/code><\/pre>\n
\u53ef\u4ee5\u8bd5\u8bd5\u770b\u6211\u6253\u7b97\u5148\u4e0d\u4f7f\u7528\u8a2d\u5b9a\u4f86\u5617\u8a66\u4f7f\u7528\u4e26\u6e2c\u8a66\u5176\u64cd\u4f5c\u3002<\/p>\n
\u6784\u6210\u6211\u4e3a\u8fd9\u6b21\u7684\u6837\u672c\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3asample\u7684\u5305\u3002\u5728\u60f3\u8c61\u4e00\u4e2a\u5e72\u51c0\u67b6\u6784\u7684\u8f6f\u4ef6\u4e0b\uff0c\u6211\u521b\u5efa\u4e86\u56db\u4e2a\u76ee\u5f55\u3002\u6211\u6253\u7b97\u5728\u8fd9\u91cc\u6dfb\u52a0\u5404\u79cd\u6587\u4ef6\u5e76\u8bd5\u8bd5\u770b\u3002<\/p>\n
\uff08\u4ee5\u4e0b\u662f\u5f53\u524d\u76ee\u5f55\u7ed3\u6784\uff09<\/p>\n
project\r\n\u2502   composer.json\r\n\u2502   composer.lock\r\n\u2502   index.php\r\n\u2502\u2500\u2500\u2500package\r\n\u2502   \u2514\u2500\u2500\u2500sample # \u3053\u306esample\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u8272\u3005\u8ffd\u52a0\u3057\u3066\u3044\u304d\u307e\u3059<\/span>\r\n\u2502       \u251c\u2500\u2500\u2500app\r\n\u2502       \u251c\u2500\u2500\u2500usecase\r\n\u2502       \u251c\u2500\u2500\u2500domain\r\n\u2502       \u2514\u2500\u2500\u2500infra\r\n\u2514\u2500\u2500\u2500vendor\r\n<\/code><\/pre>\n
\u8ba9\u6211\u4eec\u9996\u5148\u5c06\u6dfb\u52a0\u7684\u76ee\u5f55\u6dfb\u52a0\u5230\u81ea\u52a8\u52a0\u8f7d\u4e2d\u3002<\/p>\n
{<\/span>\r\n    ...<\/span>\r\n    \"autoload\"<\/span>:<\/span> {<\/span>\r\n        \"psr-4\"<\/span>:<\/span> {<\/span>\r\n            \"package\\\\\"<\/span> :<\/span> \"package\/\"<\/span> \/\/<\/span> \u8ffd\u52a0<\/span>\r\n        }<\/span>\r\n    },<\/span>\r\n    \"require\"<\/span>:<\/span> {<\/span>\r\n        \"php-di\/php-di\"<\/span>:<\/span> \"^6.0\"<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u81ea\u52a8\u52a0\u8f7d\u66f4\u65b0<\/p>\n
$ <\/span>composer dumpautoload\r\n<\/code><\/pre>\n
\u6837\u672c\u5305
\n\u63a5\u4e0b\u6765\u521b\u5efaSampleController.php\u548cSampleUseCase.php\uff0c\u5e76\u4fee\u6539\u5148\u524d\u521b\u5efa\u7684index.php\u3002
\n\u5047\u8bbe\u6309\u7167index.php -> SampleController.php -> SampleUseCase.php\u7684\u987a\u5e8f\u8fdb\u884c\u8c03\u7528\u3002<\/p>\n
<?php<\/span>\r\nnamespace<\/span> package\\sample\\app<\/span>;<\/span>\r\n\r\nuse<\/span> package\\sample\\usecase\\SampleUseCase<\/span>;<\/span>\r\n\r\nclass<\/span> SampleController<\/span>\r\n{<\/span>\r\n    \/**\r\n     * @var SampleUseCase\r\n     *\/<\/span>\r\n    private<\/span> $usecase<\/span>;<\/span>\r\n\r\n    public<\/span> function<\/span> __construct<\/span>(<\/span>SampleUseCase<\/span> $usecase<\/span>)<\/span>\r\n    {<\/span>\r\n        $this<\/span>-><\/span>usecase<\/span> =<\/span> $usecase<\/span>;<\/span>\r\n        var_dump<\/span>(<\/span>get_class<\/span>(<\/span>$this<\/span>-><\/span>usecase<\/span>));<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
<?php<\/span>\r\nnamespace<\/span> package\\sample\\usecase<\/span>;<\/span>\r\n\r\nclass<\/span> SampleUseCase<\/span>\r\n{<\/span>\r\n    public<\/span> function<\/span> __construct<\/span>()<\/span>\r\n    {<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
<?php<\/span>\r\nrequire_once<\/span> 'vendor\/autoload.php'<\/span>;<\/span>\r\nuse<\/span> package\\sample\\app\\SampleController<\/span>;<\/span>\r\nuse<\/span> package\\sample\\usecase\\SampleUseCase<\/span>;<\/span>\r\n\r\n$container<\/span> =<\/span> new<\/span> DI\\Container<\/span>();<\/span>\r\n\r\n$controller<\/span> =<\/span> new<\/span> SampleController<\/span>(<\/span>new<\/span> SampleUseCase<\/span>());<\/span>\r\n<\/code><\/pre>\n
\u6267\u884c\u7ed3\u679c (sh\u00ed ji\u00e9 gu\u01d2)<\/p>\n
$ <\/span>php index.php\r\nstring(<\/span>36)<\/span> \"package<\/span>\\s<\/span>ample<\/span>\\u<\/span>secase<\/span>\\S<\/span>ampleUseCase\"<\/span>\r\n<\/code><\/pre>\n
\u5728\u521b\u5efa\u6b64SampleController\u65f6\uff0c\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7684SampleUseCase\u662f\u672c\u6b21\u4f9d\u8d56\u6ce8\u5165\u7684\u76ee\u6807\u3002<\/p>\n
\u9996\u5148\uff0c\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528 $container->set() \u6765\u8bbe\u7f6e\u5e76\u4f7f\u7528\u4f9d\u8d56\u5173\u7cfb\u3002
\n\u8bf7\u6ce8\u610f\uff0cset() \u7684\u5b98\u65b9\u6587\u6863\u5efa\u8bae\u4f7f\u7528\u5b9a\u4e49\u6587\u4ef6\uff0c\u6240\u4ee5\u8bf7\u6ce8\u610f\u3002<\/p>\n
\u6211\u5c06\u7f16\u8f91index.php\u6587\u4ef6\uff0c\u5e76\u5c1d\u8bd5\u4f7f\u7528set()\u51fd\u6570\u8fdb\u884c\u5b9a\u4e49\u3002<\/p>\n
<?php<\/span>\r\nrequire_once<\/span> 'vendor\/autoload.php'<\/span>;<\/span>\r\nuse<\/span> package\\sample\\app\\SampleController<\/span>;<\/span>\r\nuse<\/span> package\\sample\\usecase\\SampleUseCase<\/span>;<\/span>\r\n\r\n$container<\/span> =<\/span> new<\/span> DI\\Container<\/span>();<\/span>\r\n$container<\/span>-><\/span>set<\/span>(<\/span>'SampleUseCase'<\/span>,<\/span> new<\/span> SampleUseCase<\/span>());<\/span>\r\n\r\n$controller<\/span> =<\/span> new<\/span> SampleController<\/span>(<\/span>$container<\/span>-><\/span>get<\/span>(<\/span>'SampleUseCase'<\/span>));<\/span>\r\n<\/code><\/pre>\n
\u6267\u884c\u7ed3\u679c<\/p>\n
$ <\/span>php index.php\r\nstring(<\/span>36)<\/span> \"package<\/span>\\s<\/span>ample<\/span>\\u<\/span>secase<\/span>\\S<\/span>ampleUseCase\"<\/span>\r\n<\/code><\/pre>\n
\u6211\u786e\u8ba4\u5b83\u4e0e\u4e4b\u524d\u7684\u7248\u672c\u4e00\u6837\u53ef\u4ee5\u6b63\u5e38\u5de5\u4f5c\u3002\u7136\u800c\uff0c\u7531\u4e8e\u8fd9\u79cd\u7528\u6cd5\u4f1a\u4f7f\u5f97\u4ee3\u7801\u5145\u65a5\u7740\u5bf9$container\u7684\u63cf\u8ff0\uff0c\u6240\u4ee5\u8fd8\u662f\u6700\u597d\u4f7f\u7528\u6b63\u786e\u7684\u5b9a\u4e49\u3002<\/p>\n
\u5b9a\u4e49
\n\u5b98\u65b9\u7f51\u7ad9\uff1a\u5b9a\u4e49<\/p>\n
\u636e\u8bf4\u6709\u4e09\u79cd\u65b9\u6cd5\u53ef\u4ee5\u4e3aDI\uff08\u4f9d\u8d56\u6ce8\u5165\uff09\u8fdb\u884c\u5b9a\u4e49\u3002<\/p>\n
    \n
  • \n
      auto wiring<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \n
      • \n
          annotations<\/ul>\n<\/li>\n<\/ul>\n
           <\/p>\n
            PHP definitions<\/ul>\n
            \u8fd9\u4e9b\u53ef\u4ee5\u540c\u65f6\u4f7f\u7528\uff0c\u5e76\u5728\u540c\u65f6\u4f7f\u7528\u65f6\u6309\u7167\u4ee5\u4e0b\u4f18\u5148\u987a\u5e8f\u5e94\u7528\u3002<\/p>\n
              \n
            1. \n
                \u660e\u786e\u5b9a\u4e49\u7684\u5bb9\u5668 1<\/ol>\n<\/li>\n<\/ol>\n
                \u901a\u8fc7 PHP \u6587\u4ef6\u8fdb\u884c\u5b9a\u4e49\uff08\u5982\u679c\u5728\u591a\u4e2a PHP \u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6e\uff0c\u5219\u4f7f\u7528\u6700\u540e\u4e00\u4e2a\u8bbe\u7f6e\uff09
                \n\u901a\u8fc7\u6ce8\u89e3\u8fdb\u884c\u5b9a\u4e49\uff08Annotation\uff09
                \n\u901a\u8fc7\u7c7b\u578b\u58f0\u660e\u8fdb\u884c\u5b9a\u4e49\uff08\u81ea\u52a8\u88c5\u914d\uff09<\/p>\n
                \u6682\u65f6\u5148\u6765\u770b\u770b\u8fd9\u4e09\u4e2a\u57fa\u672c\u7528\u6cd5\u5427\u3002<\/p>\n
                \u81ea\u52a8\u5e03\u7ebfauto wiring\u9ed8\u8ba4\u4e3a\u6253\u5f00\u72b6\u6001\uff0c\u56e0\u6b64\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u3002\u5b83\u4f3c\u4e4e\u4f1a\u81ea\u52a8\u68c0\u6d4b\u5e76\u751f\u6210\u5e76\u6ce8\u5165\u4e0e\u7c7b\u578b\u58f0\u660e\u76f8\u540c\u7684\u7c7b\u578b\u3002\u6211\u4eec\u5c06\u66f4\u6539index.php\u5e76\u5c1d\u8bd5\u5b9e\u9645\u8fd0\u884c\u4e00\u4e0b\u3002<\/p>\n
                <?php<\/span>\r\nrequire_once<\/span> 'vendor\/autoload.php'<\/span>;<\/span>\r\n\r\n$container<\/span> =<\/span> new<\/span> DI\\Container<\/span>();<\/span>\r\n$controller<\/span> =<\/span> $container<\/span>-><\/span>get<\/span>(<\/span>'package\\sample\\app\\SampleController'<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>get_class<\/span>(<\/span>$controller<\/span>));<\/span>\r\n<\/code><\/pre>\n
                \u6267\u884c\u7ed3\u679c<\/p>\n
                $ <\/span>php index.php\r\nstring(<\/span>36)<\/span> \"package<\/span>\\s<\/span>ample<\/span>\\u<\/span>secase<\/span>\\S<\/span>ampleUseCase\"<\/span>\r\nstring(<\/span>35)<\/span> \"package<\/span>\\s<\/span>ample<\/span>\\a<\/span>pp<\/span>\\S<\/span>ampleController\"<\/span>\r\n<\/code><\/pre>\n
                \u770b\u8d77\u6765SampleUseCase\u5bf9\u8c61\u5df2\u7ecf\u6210\u529f\u6ce8\u5165\u5230SampleController\u4e2d\u4e86\u3002<\/p>\n
                \u6b64\u5916\uff0c\u901a\u8fc7\u8be5\u6784\u9020\u51fd\u6570\u5b9e\u73b0\u7684\u81ea\u52a8\u88c5\u914d\u529f\u80fd\u80fd\u591f\u9012\u5f52\u5730\u8fdb\u884c\u6ce8\u5165\uff0c\u56e0\u6b64\u5728\u521d\u59cb\u751f\u6210\u65f6\u4e5f\u4f1a\u5bf9\u5176\u5b50\u5bf9\u8c61\u8fdb\u884c\u6ce8\u5165\u3002<\/p>\n
                \u6211\u60f3\u5728infra\u5c42\u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u6570\u636e\u5e93\u7684\u7c7b\uff0c\u5e76\u4fee\u6539\u4ee3\u7801\u4ee5\u4fbf\u5c06\u5176\u6ce8\u5165UseCase\uff0c\u5e76\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n
                \r\n<?php<\/span>\r\nnamespace<\/span> package\\sample\\infra<\/span>;<\/span>\r\n\r\nclass<\/span> MySqlDB<\/span>\r\n{<\/span>\r\n    public<\/span> function<\/span> save<\/span>(<\/span>int<\/span> $number<\/span>):<\/span> void<\/span>\r\n    {<\/span>\r\n        \/\/ \u306a\u3093\u304b\u4fdd\u5b58\u51e6\u7406<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                <?php<\/span>\r\nnamespace<\/span> package\\sample\\usecase<\/span>;<\/span>\r\n\r\nuse<\/span> package\\sample\\infra\\MySqlDB<\/span>;<\/span>\r\n\r\nclass<\/span> SampleUseCase<\/span>\r\n{<\/span>\r\n    public<\/span> function<\/span> __construct<\/span>(<\/span>MySqlDB<\/span> $db<\/span>)<\/span> \/\/ \u4f5c\u6210\u3057\u305fMySqlDB\u30af\u30e9\u30b9\u3092\u53d7\u3051\u53d6\u308b\u7528\u306b\u4fee\u6b63<\/span>\r\n    {<\/span>\r\n        var_dump<\/span>(<\/span>get_class<\/span>(<\/span>$db<\/span>));<\/span>  \/\/ <\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u6267\u884c\u7ed3\u679c<\/p>\n
                $ <\/span>php index.php\r\nstring(<\/span>28)<\/span> \"package<\/span>\\s<\/span>ample<\/span>\\i<\/span>nfra<\/span>\\M<\/span>ySqlDB\"<\/span>\r\nstring(<\/span>36)<\/span> \"package<\/span>\\s<\/span>ample<\/span>\\u<\/span>secase<\/span>\\S<\/span>ampleUseCase\"<\/span>\r\nstring(<\/span>35)<\/span> \"package<\/span>\\s<\/span>ample<\/span>\\a<\/span>pp<\/span>\\S<\/span>ampleController\"<\/span>\r\n<\/code><\/pre>\n
                \u901a\u8fc7\u4ece\u5bb9\u5668\u4e2d\u751f\u6210\u63a7\u5236\u5668\uff0c\u6211\u4eec\u786e\u8ba4\u5b83\u8fd8\u6ce8\u5165\u4e86UseCase\u7c7b\u6240\u9700\u7684\u5176\u4ed6\u7c7b\u3002<\/p>\n
                \u7136\u800c\uff0c\u7531\u4e8eAuto wiring \u662f\u6839\u636e\u7c7b\u578b\u58f0\u660e\u6765\u786e\u5b9a\u6ce8\u5165\u5bf9\u8c61\uff0c\u6240\u4ee5\u65e0\u6cd5\u89e3\u51b3\u4ee5\u4e0b\u60c5\u51b5\uff1a
                \n\u5b9e\u9645\u4e0a\uff0c\u6211\u8ba4\u4e3a\u60f3\u8981\u8fdb\u884cDI\u51e0\u4e4e\u662f\u9488\u5bf9\u63a5\u53e3\u7684\uff0c\u6240\u4ee5\u9700\u8981\u4f7f\u7528\u5176\u4ed6\u65b9\u6cd5\u3002<\/p>\n
                \r\nclass<\/span> Database<\/span>\r\n{<\/span>\r\n    public<\/span> function<\/span> __construct<\/span>(<\/span>$dbHost<\/span>,<\/span> $dbPort<\/span>)<\/span> \/\/ \u578b\u5ba3\u8a00\u304c\u306a\u3044<\/span>\r\n    {<\/span>\r\n        \/\/ ...<\/span>\r\n    }<\/span>\r\n\r\n    public<\/span> function<\/span> setLogger<\/span>(<\/span>LoggerInterface<\/span> $logger<\/span>)<\/span> \/\/ \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/span>\r\n    {<\/span>\r\n        \/\/ ...<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u5728PHP\u6587\u4ef6\u7684\u5b9a\u4e49\u4e2d\u660e\u786e\u58f0\u660e\u5411DI\\autowire()\u6ce8\u5165\u4ec0\u4e48\u3002<\/p>\n
                PHP \u5b9a\u4e49\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u5c1d\u8bd5\u5728PHP\u4e2d\u7f16\u5199\u5b9a\u4e49\u5e76\u5b9a\u4e49\u4f9d\u8d56\u5173\u7cfb\u6ce8\u5165\u3002<\/p>\n
                \u6ce8\u518c\u65b9\u6cd5\u4f3c\u4e4e\u6709\u4ee5\u4e0b\u4e24\u79cd\u5b9a\u4e49\u3002<\/p>\n
                \/\/ addDefinitions()\u306e\u5f15\u6570\u306b\u914d\u5217\u3092\u6e21\u3059<\/span>\r\n$containerBuilder<\/span>-><\/span>addDefinitions<\/span>([<\/span>\r\n    \/\/ place your definitions here<\/span>\r\n]);<\/span>\r\n\/\/ addDefinitions()\u306e\u5f15\u6570\u306b\u5b9a\u7fa9\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u6e21\u3059<\/span>\r\n$containerBuilder<\/span>-><\/span>addDefinitions<\/span>(<\/span>'config.php'<\/span>);<\/span>\r\n<\/code><\/pre>\n
                \u6211\u4e5f\u60f3\u7acb\u5373\u5c1d\u8bd5\u4e00\u4e0b\u57fa\u672c\u7684\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n
                \u793a\u4f8b2\u6211\u4f1a\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aSample2\u7684\u7a0b\u5e8f\u5305\uff0c\u7136\u540e\u5c1d\u8bd5\u4e0a\u8ff0\u4e24\u79cd\u65b9\u6cd5\uff08\u5185\u5bb9\u4e0e\u4e4b\u524d\u7684sample\u7a0b\u5e8f\u5305\u76f8\u540c\uff0c\u4f46\u662fUseCase\u7c7b\u7684\u6784\u9020\u51fd\u6570\u6682\u65f6\u8bbe\u4e3a\u65e0\uff09\u3002<\/p>\n
                \u5c06”addDefinitions”\u4ee5\u5173\u8054\u6570\u7ec4\u7684\u5f62\u5f0f\u8fdb\u884c\u5b9a\u4e49<\/p>\n
                <?php<\/span>\r\nrequire_once<\/span> 'vendor\/autoload.php'<\/span>;<\/span>\r\n\r\n$builder<\/span> =<\/span> new<\/span> DI\\ContainerBuilder<\/span>();<\/span>\r\n$builder<\/span>-><\/span>addDefinitions<\/span>([<\/span>\r\n    'SampleUseCase'<\/span> =><\/span> function<\/span>(<\/span>$c<\/span>){<\/span>\r\n        return<\/span> $c<\/span>-><\/span>get<\/span>(<\/span>'package\\sample2\\usecase\\SampleUseCase'<\/span>);<\/span>\r\n    },<\/span>\r\n    'SampleController'<\/span> =><\/span> DI\\create<\/span>(<\/span>'package\\sample2\\app\\SampleController'<\/span>)<\/span>\r\n        -><\/span>constructor<\/span>(<\/span>DI\\get<\/span>(<\/span>'SampleUseCase'<\/span>)),<\/span>\r\n]);<\/span>\r\n$container<\/span> =<\/span> $builder<\/span>-><\/span>build<\/span>();<\/span>\r\n\r\n$controller<\/span> =<\/span> $container<\/span>-><\/span>get<\/span>(<\/span>'SampleController'<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>get_class<\/span>(<\/span>$controller<\/span>));<\/span>\r\n\r\n\/\/ \u5b9f\u884c\u7d50\u679c<\/span>\r\n$<\/span> php<\/span> index<\/span>.<\/span>php<\/span>\r\nstring<\/span>(<\/span>37<\/span>)<\/span> \"package\\sample2\\usecase\\SampleUseCase\"<\/span>\r\nstring<\/span>(<\/span>36<\/span>)<\/span> \"package\\sample2\\app\\SampleController\"<\/span>\r\n<\/code><\/pre>\n
                \u521b\u5efa\u4e00\u4e2a\u5b9a\u4e49\u6587\u4ef6\u5e76\u8fdb\u884c\u5b9a\u4e49\u3002
                \n\u5728index.php\u6240\u5728\u7684\u76ee\u5f55\u4e0b\u653e\u7f6ediconfig.php\u6587\u4ef6\u3002<\/p>\n
                <?php<\/span>\r\n\r\nuse<\/span> Psr\\Container\\ContainerInterface<\/span>;<\/span>\r\nuse<\/span> function<\/span> DI\\factory<\/span>;<\/span>\r\nuse<\/span> package\\sample2\\usecase\\SampleUseCase<\/span>;<\/span>\r\nuse<\/span> package\\sample2\\app\\SampleController<\/span>;<\/span>\r\n\r\nreturn<\/span> [<\/span>\r\n    'SampleUseCase'<\/span> =><\/span> DI\\factory<\/span>(<\/span>function<\/span> (<\/span>ContainerInterface<\/span> $c<\/span>)<\/span> {<\/span>\r\n        return<\/span> new<\/span> SampleUseCase<\/span>();<\/span>\r\n    }),<\/span>\r\n    'SampleController'<\/span> =><\/span> DI\\factory<\/span>(<\/span>function<\/span> (<\/span>ContainerInterface<\/span> $c<\/span>)<\/span> {<\/span>\r\n        return<\/span> new<\/span> SampleController<\/span>(<\/span>$c<\/span>-><\/span>get<\/span>(<\/span>'SampleUseCase'<\/span>));<\/span>\r\n    }),<\/span>\r\n];<\/span>\r\n<\/code><\/pre>\n
                <?php<\/span>\r\nrequire_once<\/span> 'vendor\/autoload.php'<\/span>;<\/span>\r\n\r\n$builder<\/span> =<\/span> new<\/span> DI\\ContainerBuilder<\/span>();<\/span>\r\n$builder<\/span>-><\/span>addDefinitions<\/span>(<\/span>'diconfig.php'<\/span>);<\/span>\r\n$container<\/span> =<\/span> $builder<\/span>-><\/span>build<\/span>();<\/span>\r\n\r\n\r\n$controller<\/span> =<\/span> $container<\/span>-><\/span>get<\/span>(<\/span>'SampleController'<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>get_class<\/span>(<\/span>$controller<\/span>));<\/span>\r\n\r\n\/\/ \u5b9f\u884c\u7d50\u679c<\/span>\r\n$<\/span> php<\/span> index<\/span>.<\/span>php<\/span>\r\nstring<\/span>(<\/span>37<\/span>)<\/span> \"package\\sample2\\usecase\\SampleUseCase\"<\/span>\r\nstring<\/span>(<\/span>36<\/span>)<\/span> \"package\\sample2\\app\\SampleController\"<\/span>\r\n<\/code><\/pre>\n
                DI\\factory()\u53ef\u4ee5\u5728\u65e0\u6cd5\u4ece\u7c7b\u578b\u58f0\u660e\u4e2d\u63a8\u65ad\u51fa\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\u3002\u8bf7\u53c2\u9605\u5b98\u65b9\u6587\u6863\u4ee5\u83b7\u53d6\u66f4\u8be6\u7ec6\u7684\u4fe1\u606f\u3002
                \n\u4f7f\u7528\u8fd9\u4e2a\u914d\u7f6e\u6587\u4ef6\u4f3c\u4e4e\u53ef\u4ee5\u63cf\u8ff0\u9488\u5bf9\u63a5\u53e3\u7684DI\u8bbe\u7f6e\uff0c\u4f46\u662f\u6211\u60f3\u5148\u770b\u4e00\u4e0b\u6700\u540e\u7684\u6ce8\u91ca\u5b9a\u4e49\u3002<\/p>\n
                Subsequent explanations or notes.\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u4f7f\u7528\u6807\u6ce8\u7684\u5b9a\u4e49\u65b9\u6cd5\u3002<\/p>\n
                \u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6b64\u65b9\u6cd5\u88ab\u7981\u7528\uff0c\u56e0\u6b64\u9996\u5148\u9700\u8981\u542f\u7528\u5b83\u3002<\/p>\n
                # Annotations\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/span>\r\ncomposer require doctrine\/annotations\r\n<\/code><\/pre>\n
                \u53e6\u5916\uff0c\u5728\u4f7f\u7528\u65f6\u9700\u8981\u6dfb\u52a0\u6709\u6548\u5316\u7684\u63cf\u8ff0\u3002<\/p>\n
                $containerBuilder<\/span>-><\/span>useAnnotations<\/span>(<\/span>true<\/span>);<\/span>\r\n<\/code><\/pre>\n
                \u53ef\u4ee5\u901a\u8fc7\u5728phpdoc\u4e2d\u6dfb\u52a0@inject\u6ce8\u91ca\u6765\u5b9a\u4e49\u8981\u6ce8\u5165\u7684\u76ee\u6807\u548c\u6ce8\u5165\u5185\u5bb9\uff0c\u4ece\u800c\u5b9e\u73b0\u5bf9PHP-DI\u7684\u6ce8\u5165\u5b9a\u4e49\u3002<\/p>\n
                \u6837\u672c3\u5305\u88f9
                \n\u6211\u525b\u624d\u8ddf\u4e4b\u524d\u4e00\u6a23\uff0c\u5207\u4e86\u4e00\u500b\u53eb\u505asample3\u7684\u5957\u9910\uff0c\u8a66\u8457\u770b\u4e86\u4e00\u4e0b\u3002
                \n\u96d6\u7136\u5167\u5bb9\u57fa\u672c\u4e0a\u662f\u4e00\u6a23\u7684\uff0c\u4f46\u6709\u4ee5\u4e0b\u5e7e\u9ede\u4e0d\u540c\u3002<\/p>\n
                <?php<\/span>\r\nrequire_once<\/span> 'vendor\/autoload.php'<\/span>;<\/span>\r\n\r\n$containerBuilder<\/span> =<\/span> new<\/span> DI\\ContainerBuilder<\/span>();<\/span>\r\n$containerBuilder<\/span>-><\/span>useAnnotations<\/span>(<\/span>true<\/span>);<\/span>\r\n$container<\/span> =<\/span> $containerBuilder<\/span>-><\/span>build<\/span>();<\/span>\r\n\r\n$controller<\/span> =<\/span> $container<\/span>-><\/span>get<\/span>(<\/span>'package\\sample3\\app\\SampleController'<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>get_class<\/span>(<\/span>$controller<\/span>));<\/span>\r\n<\/code><\/pre>\n
                <?php<\/span>\r\nnamespace<\/span> package\\sample3\\app<\/span>;<\/span>\r\n\r\nuse<\/span> package\\sample3\\usecase\\SampleUseCase<\/span>;<\/span>\r\n\r\nclass<\/span> SampleController<\/span>\r\n{<\/span>\r\n    \/**\r\n     * @inject\r\n     * @var SampleUseCase\r\n     *\/<\/span>\r\n    private<\/span> $usecase<\/span>;<\/span>\r\n\r\n    public<\/span> function<\/span> __construct<\/span>(<\/span>SampleUseCase<\/span> $usecase<\/span>)<\/span>\r\n    {<\/span>\r\n        $this<\/span>-><\/span>usecase<\/span> =<\/span> $usecase<\/span>;<\/span>\r\n        var_dump<\/span>(<\/span>get_class<\/span>(<\/span>$this<\/span>-><\/span>usecase<\/span>));<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                # \u5b9f\u884c\u7d50\u679c<\/span>\r\n$ <\/span>php index.php\r\nstring(<\/span>37)<\/span> \"package<\/span>\\s<\/span>ample3<\/span>\\u<\/span>secase<\/span>\\S<\/span>ampleUseCase\"<\/span>\r\nstring(<\/span>36)<\/span> \"package<\/span>\\s<\/span>ample3<\/span>\\a<\/span>pp<\/span>\\S<\/span>ampleController\"<\/span>\r\n<\/code><\/pre>\n
                \u53ea\u9700\u6dfb\u52a0@inject\u6ce8\u89e3\uff0c\u5b83\u771f\u7684\u6210\u529f\u6ce8\u5165\u4e86\u3002<\/p>\n
                \u66ab\u6642\u4ee5\u9019\u500b\u65b9\u6cd5\uff0c\u6211\u5011\u5df2\u7d93\u6210\u529f\u5730\u5617\u8a66\u4e86\u4ee5\u6700\u7c21\u55ae\u7684\u65b9\u5f0f\u9032\u884c\u4e09\u7a2e\u4e0d\u540c\u7684DI\u65b9\u5f0f\u3002<\/p>\n
                \u901a\u8fc7\u5c06\u8fd9\u4e09\u79cd\u65b9\u6cd5\u7ed3\u5408\u8d77\u6765\uff0c\u4f3c\u4e4e\u53ef\u4ee5\u7075\u6d3b\u5730\u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165\u3002<\/p>\n
                \u8fd9\u4e2a\u95ee\u9898\u6211\u5df2\u7ecf\u6d4f\u89c8\u4e86\u57fa\u672c\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u6240\u4ee5\u6253\u7b97\u5c06\u5b83\u4eec\u7ed3\u5408\u8d77\u6765\uff0c\u5c1d\u8bd5\u4ee5\u66f4\u5b9e\u7528\u7684\u65b9\u5f0f\u4f7f\u7528\u3002\u5230\u76ee\u524d\u4e3a\u6b62\uff0c\u53ea\u5728\u5b9e\u9645\u7c7b\u4e2d\u5b9a\u4e49\u4e86\u8fd9\u4e9b\uff0c\u4f46\u6211\u5c06\u5c1d\u8bd5\u5728\u6700\u5e38\u4f7f\u7528\u7684\u63a5\u53e3\u4e2d\u4ea4\u7ec7\u4f9d\u8d56\u6ce8\u5165\u3002<\/p>\n
                \u6837\u672c4\u5305
                \n\u65b0\u6dfb\u52a0\u4e86\u4e00\u4e2a\u526f\u672c\u5305\u5e76\u5bf9\u63a5\u53e3\u8fdb\u884c\u4e86\u4fee\u6539\uff0c\u6bcf\u4e2a\u6587\u4ef6\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
                <?php<\/span>\r\nnamespace<\/span> package\\sample4\\app<\/span>;<\/span>\r\n\r\nuse<\/span> package\\sample4\\usecase\\SampleUseCase<\/span>;<\/span>\r\n\r\nclass<\/span> SampleController<\/span>\r\n{<\/span>\r\n    \/**\r\n     * @var SampleUseCase\r\n     *\/<\/span>\r\n    private<\/span> $usecase<\/span>;<\/span>\r\n\r\n    public<\/span> function<\/span> __construct<\/span>(<\/span>SampleUseCase<\/span> $usecase<\/span>)<\/span>\r\n    {<\/span>\r\n        $this<\/span>-><\/span>usecase<\/span> =<\/span> $usecase<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                <?php<\/span>\r\nnamespace<\/span> package\\sample4\\usecase<\/span>;<\/span>\r\n\r\nuse<\/span> package\\sample4\\domain\\SampleDB<\/span>;<\/span>\r\n\r\nclass<\/span> SampleUseCase<\/span>\r\n{<\/span>\r\n    \/**\r\n     * @var SampleDB\r\n     *\/<\/span>\r\n    private<\/span> $db<\/span>;<\/span>\r\n\r\n    public<\/span> function<\/span> __construct<\/span>(<\/span>SampleDB<\/span> $db<\/span>)<\/span> \/\/ interface\u306b\u3088\u308b\u578b\u5ba3\u8a00<\/span>\r\n    {<\/span>\r\n        $this<\/span>-><\/span>db<\/span> =<\/span> $db<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                <?php<\/span>\r\nnamespace<\/span> package\\sample4\\domain<\/span>;<\/span>\r\n\r\ninterface<\/span> SampleDB<\/span>\r\n{<\/span>\r\n    public<\/span> function<\/span> save<\/span>(<\/span>int<\/span> $number<\/span>):<\/span> void<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                <?php<\/span>\r\nnamespace<\/span> package\\sample4\\infra<\/span>;<\/span>\r\n\r\nuse<\/span> package\\sample4\\domain\\SampleDB<\/span>;<\/span>\r\n\r\n\/**\r\n * SampleDB\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5177\u8c61\u30af\u30e9\u30b91\r\n *\/<\/span>\r\nclass<\/span> InMemoryDB<\/span> implements<\/span> SampleDB<\/span>\r\n{<\/span>\r\n    private<\/span> $data<\/span> =<\/span> [];<\/span>\r\n\r\n    public<\/span> function<\/span> save<\/span>(<\/span>int<\/span> $number<\/span>):<\/span> void<\/span>\r\n    {<\/span>\r\n        $this<\/span>-><\/span>data<\/span>[]<\/span> =<\/span> $number<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                <?php<\/span>\r\nnamespace<\/span> package\\sample4\\infra<\/span>;<\/span>\r\n\r\nuse<\/span> package\\sample4\\domain\\SampleDB<\/span>;<\/span>\r\n\r\n\/**\r\n * SampleDB\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5177\u8c61\u30af\u30e9\u30b92\r\n *\/<\/span>\r\nclass<\/span> MySqlDB<\/span> implements<\/span> SampleDB<\/span>\r\n{<\/span>\r\n    public<\/span> function<\/span> save<\/span>(<\/span>int<\/span> $number<\/span>):<\/span> void<\/span>\r\n    {<\/span>\r\n        \/\/ \u306a\u3093\u304b\u4fdd\u5b58\u51e6\u7406<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u5ba2\u6237\u4ee3\u7801<\/p>\n
                <?php<\/span>\r\nrequire_once<\/span> 'vendor\/autoload.php'<\/span>;<\/span>\r\n\r\nuse<\/span> package\\sample4\\app\\SampleController<\/span>;<\/span>\r\nuse<\/span> package\\sample4\\infra\\InMemoryDB<\/span>;<\/span>\r\nuse<\/span> package\\sample4\\infra\\MySqlDB<\/span>;<\/span>\r\nuse<\/span> package\\sample4\\usecase\\SampleUseCase<\/span>;<\/span>\r\n\r\n\/\/ \u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092PHP-DI\u3092\u4f7f\u7528\u3057\u3066\u81ea\u52d5\u5316\u3057\u305f\u3044<\/span>\r\n$db<\/span> =<\/span> new<\/span> InMemoryDB<\/span>();<\/span>\r\n$usecase<\/span> =<\/span> new<\/span> SampleUseCase<\/span>(<\/span>$db<\/span>);<\/span>\r\n$controller<\/span> =<\/span> new<\/span> SampleController<\/span>(<\/span>$usecase<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$controller<\/span>);<\/span>\r\n<\/code><\/pre>\n
                # \u5b9f\u884c\u7d50\u679c<\/span>\r\n$ <\/span>php index.php\r\nobject(<\/span>package\\s<\/span>ample4\\a<\/span>pp\\S<\/span>ampleController)<\/span>#12 (1) {<\/span>\r\n  [<\/span>\"usecase\"<\/span>:\"package<\/span>\\s<\/span>ample4<\/span>\\a<\/span>pp<\/span>\\S<\/span>ampleController\"<\/span>:private]=><\/span>\r\n  object(<\/span>package\\s<\/span>ample4\\u<\/span>secase\\S<\/span>ampleUseCase)<\/span>#11 (1) {<\/span>\r\n    [<\/span>\"db\"<\/span>:\"package<\/span>\\s<\/span>ample4<\/span>\\u<\/span>secase<\/span>\\S<\/span>ampleUseCase\"<\/span>:private]=><\/span>\r\n    object(<\/span>package\\s<\/span>ample4\\i<\/span>nfra\\I<\/span>nMemoryDB)<\/span>#10 (1) {<\/span>\r\n      [<\/span>\"data\"<\/span>:\"package<\/span>\\s<\/span>ample4<\/span>\\i<\/span>nfra<\/span>\\I<\/span>nMemoryDB\"<\/span>:private]=><\/span>\r\n      array(<\/span>0)<\/span> {<\/span>\r\n      }<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
                \u7531\u4e8e\u4f7f\u7528\u4e86interface\uff0c\u6211\u60f3\u901a\u8fc7\u5148\u524d\u5c1d\u8bd5\u8fc7\u7684PHP\u6587\u4ef6\u4e2d\u7684\u5b9a\u4e49\u6765\u5b9a\u4e49\u5b83\u7684\u4f9d\u8d56\u5173\u7cfb\uff0c\u5e76\u5e0c\u671b\u4f7f\u7528\u6ce8\u89e3\u6765\u5b9a\u4e49\u5176\u4ed6\u7684\u4f9d\u8d56\u5173\u7cfb\u3002<\/p>\n
                \u5b9a\u4e49\u63a5\u53e3\u7684\u4f9d\u8d56\u5173\u7cfb
                \n\u5728\u8bbe\u5b9a\u6587\u4ef6\u4e2d\u5b9a\u4e49\u6620\u5c04\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
                <?php<\/span>\r\n\r\nuse<\/span> package\\sample4\\domain\\SampleDB<\/span>;<\/span>\r\nuse<\/span> package\\sample4\\infra\\InMemoryDB<\/span>;<\/span>\r\n\r\nreturn<\/span> [<\/span>\r\n    SampleDB<\/span>::<\/span>class<\/span> =><\/span> DI\\autowire<\/span>(<\/span>InMemoryDB<\/span>::<\/span>class<\/span>),<\/span>\r\n];<\/span>\r\n<\/code><\/pre>\n
                \u6211\u5c06\u4fee\u6539index.php\u6587\u4ef6\uff0c\u9996\u5148\u53ea\u5c1d\u8bd5\u8fd9\u4e2a\u90e8\u5206\u3002<\/p>\n
                <?php<\/span>\r\nrequire_once<\/span> 'vendor\/autoload.php'<\/span>;<\/span>\r\n\r\n$containerBuilder<\/span> =<\/span> new<\/span> DI\\ContainerBuilder<\/span>();<\/span>\r\n$containerBuilder<\/span>-><\/span>addDefinitions<\/span>(<\/span>'diconfig.php'<\/span>);<\/span>\r\n$container<\/span> =<\/span> $containerBuilder<\/span>-><\/span>build<\/span>();<\/span>\r\n\r\nuse<\/span> package\\sample4\\usecase\\SampleUseCase<\/span>;<\/span>\r\n\r\n$usecase<\/span> =<\/span> $container<\/span>-><\/span>get<\/span>(<\/span>SampleUseCase<\/span>::<\/span>class<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$usecase<\/span>);<\/span>\r\n<\/code><\/pre>\n
                # \u5b9f\u884c\u7d50\u679c<\/span>\r\n$ <\/span>php index.php\r\nobject(<\/span>package\\s<\/span>ample4\\u<\/span>secase\\S<\/span>ampleUseCase)<\/span>#20 (1) {<\/span>\r\n  [<\/span>\"db\"<\/span>:\"package<\/span>\\s<\/span>ample4<\/span>\\u<\/span>secase<\/span>\\S<\/span>ampleUseCase\"<\/span>:private]=><\/span>\r\n  object(<\/span>package\\s<\/span>ample4\\i<\/span>nfra\\I<\/span>nMemoryDB)<\/span>#23 (1) {<\/span>\r\n    [<\/span>\"data\"<\/span>:\"package<\/span>\\s<\/span>ample4<\/span>\\i<\/span>nfra<\/span>\\I<\/span>nMemoryDB\"<\/span>:private]=><\/span>\r\n    array(<\/span>0)<\/span> {<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                InMemoryDB\u7c7b\u7684\u5b9e\u73b0\u7c7b\u88ab\u6ce8\u5165\u5230SampleUseCase\u7c7b\u7684\u6784\u9020\u51fd\u6570\u4e2d\u6307\u5b9a\u7684SampleDB\u63a5\u53e3\u3002
                \n\u7531\u4e8eSampleUseCase\u662fSampleController\u7684\u5177\u4f53\u7c7b\uff0c\u6240\u4ee5\u6211\u5e0c\u671b\u4f7f\u7528\u6ce8\u89e3\u8fdb\u884c\u8bbe\u7f6e\u3002<\/p>\n
                <?php<\/span>\r\nnamespace<\/span> package\\sample4\\app<\/span>;<\/span>\r\n\r\nuse<\/span> package\\sample4\\usecase\\SampleUseCase<\/span>;<\/span>\r\n\r\nclass<\/span> SampleController<\/span>\r\n{<\/span>\r\n    \/**\r\n     * @inject  \/\/ \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u8ffd\u52a0\r\n     * @var SampleUseCase\r\n     *\/<\/span>\r\n    private<\/span> $usecase<\/span>;<\/span>\r\n\r\n    public<\/span> function<\/span> __construct<\/span>(<\/span>SampleUseCase<\/span> $usecase<\/span>)<\/span>\r\n    {<\/span>\r\n        $this<\/span>-><\/span>usecase<\/span> =<\/span> $usecase<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u5ba2\u6237\u4ee3\u7801<\/p>\n
                <?php<\/span>\r\nrequire_once<\/span> 'vendor\/autoload.php'<\/span>;<\/span>\r\n\r\nuse<\/span> package\\sample4\\app\\SampleController<\/span>;<\/span>\r\n\r\n$containerBuilder<\/span> =<\/span> new<\/span> DI\\ContainerBuilder<\/span>();<\/span>\r\n$containerBuilder<\/span>-><\/span>useAnnotations<\/span>(<\/span>true<\/span>);<\/span>\r\n$containerBuilder<\/span>-><\/span>addDefinitions<\/span>(<\/span>'diconfig.php'<\/span>);<\/span>\r\n$container<\/span> =<\/span> $containerBuilder<\/span>-><\/span>build<\/span>();<\/span>\r\n\r\n$controller<\/span> =<\/span> $container<\/span>-><\/span>get<\/span>(<\/span>SampleController<\/span>::<\/span>class<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$controller<\/span>);<\/span>\r\n<\/code><\/pre>\n
                # \u5b9f\u884c\u7d50\u679c<\/span>\r\n$ <\/span>php index.php\r\nobject(<\/span>package\\s<\/span>ample4\\a<\/span>pp\\S<\/span>ampleController)<\/span>#29 (1) {<\/span>\r\n  [<\/span>\"usecase\"<\/span>:\"package<\/span>\\s<\/span>ample4<\/span>\\a<\/span>pp<\/span>\\S<\/span>ampleController\"<\/span>:private]=><\/span>\r\n  object(<\/span>package\\s<\/span>ample4\\u<\/span>secase\\S<\/span>ampleUseCase)<\/span>#33 (1) {<\/span>\r\n    [<\/span>\"db\"<\/span>:\"package<\/span>\\s<\/span>ample4<\/span>\\u<\/span>secase<\/span>\\S<\/span>ampleUseCase\"<\/span>:private]=><\/span>\r\n    object(<\/span>package\\s<\/span>ample4\\i<\/span>nfra\\I<\/span>nMemoryDB)<\/span>#38 (1) {<\/span>\r\n      [<\/span>\"data\"<\/span>:\"package<\/span>\\s<\/span>ample4<\/span>\\i<\/span>nfra<\/span>\\I<\/span>nMemoryDB\"<\/span>:private]=><\/span>\r\n      array(<\/span>0)<\/span> {<\/span>\r\n      }<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u901a\u8fc7\u5728\u5ba2\u6237\u7aef\u4ee3\u7801\u4e2d\u4ece\u5bb9\u5668\u4e2d\u521b\u5efa\u63a7\u5236\u5668\uff0c\u53ef\u4ee5\u786e\u8ba4\u5728\u6ce8\u5165\u4e4b\u524d\u5df2\u89e3\u51b3\u4e86\u6240\u6709\u4f9d\u8d56\u5173\u7cfb\uff0c\u5e76\u6ce8\u5165\u5230\u6240\u9700\u7684\u6240\u6709\u7c7b\u4e2d\u3002<\/p>\n
                \u7ed3\u675f\u4e86 (Chinese: le)
                \n\u57fa\u672c\u64cd\u4f5c\u5df2\u7ecf\u5728\u6b64\u8bb0\u5f55\uff0c\u4f46\u5230\u8fbe\u8fd9\u4e00\u6b65\u540e\uff0c\u53ea\u9700\u8981\u53c2\u8003\u6587\u6863\u5e76\u6839\u636e\u9700\u8981\u8fdb\u884c\u9002\u5f53\u7684\u8bbe\u7f6e\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u4e86\u3002<\/p>\n
                \u5728\u672c\u6587\u4e2d\u6ca1\u6709\u63d0\u5230\uff0c\u4f46\u662f\u5728\u4f7f\u7528\u6846\u67b6\u65f6\uff0c\u63a7\u5236\u5668\u5e94\u8be5\u5df2\u7ecf\u5728\u6846\u67b6\u4e2d\u751f\u6210\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528injectOn()\u6765\u5bf9\u5df2\u7ecf\u751f\u6210\u7684\u5bf9\u8c61\u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165\u3002
                \n\u5f53\u7136\uff0c\u7531\u4e8e\u5df2\u7ecf\u751f\u6210\uff0c\u56e0\u6b64\u65e0\u6cd5\u4f7f\u7528\u6784\u9020\u51fd\u6570\u6ce8\u5165\uff0c\u800c\u662f\u9700\u8981\u4f7f\u7528\u5c5e\u6027\u6ce8\u5165\u6765\u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165\u3002
                \n\u5bf9\u4e8e\u751f\u6210\u7684\u63a7\u5236\u5668\uff0c\u4f7f\u7528injectOn()\uff0c\u5e76\u4f7f\u7528\u4e0a\u8ff0\u8bbe\u7f6e\u6765\u89e3\u51b3\u5176\u4f59\u7684\u4f9d\u8d56\u5173\u7cfb\u4f3c\u4e4e\u662f\u6700\u597d\u7684\u9009\u62e9\u3002
                \n\u8be6\u7ec6\u4fe1\u606f\u8bf7\u53c2\u9605\u6b64\u5904\u3002<\/p>\n
                \u6700\u521d\u5c1d\u8bd5\u4f7f\u7528$container->set()\u65b9\u6cd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                \u5173\u4e8e\u8fd9\u7bc7\u6587\u7ae0\u6700\u8fd1\u6709\u5f88\u591aPHP\u6846\u67b6\u90fd\u9ed8\u8ba4\u914d\u5907\u4e86DI\u5e93\uff0c\u4f46\u7531\u4e8e\u6211\u5e0c\u671b\u5c3d\u91cf\u4e0d\u4f9d\u8d56\u6846\u67b6\u7684\u529f\u80fd\u6765\u8fdb\u884cDI\uff0c\u6240\u4ee5\u6211\u5c1d\u8bd5\u4e86\u901a […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30764","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\nPHP-DI\u4ecb\u7ecd - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8ePHP-DI\u4ecb\u7ecd\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/php-di\u4ecb\u7ecd\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHP-DI\u4ecb\u7ecd\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8ePHP-DI\u4ecb\u7ecd\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/php-di\u4ecb\u7ecd\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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