{"id":47822,"date":"2024-12-02T11:31:27","date_gmt":"2024-12-02T03:31:27","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47822\/"},"modified":"2024-12-02T11:31:27","modified_gmt":"2024-12-02T03:31:27","slug":"php-%e5%87%bd%e6%95%b0%e5%b9%b6%e5%8f%91%e7%bc%96%e7%a8%8b%e7%9a%84%e4%bf%a1%e5%8f%b7%e9%87%8f%e6%9c%ba%e5%88%b6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47822\/","title":{"rendered":"PHP \u51fd\u6570\u5e76\u53d1\u7f16\u7a0b\u7684\u4fe1\u53f7\u91cf\u673a\u5236"},"content":{"rendered":"

<\/b> <\/p>\n

PHP \u51fd\u6570\u5e76\u53d1\u7f16\u7a0b\u7684\u4fe1\u53f7\u91cf\u673a\u5236<\/h1>\n

\u6b22\u8fce\u5404\u4f4d\u5c0f\u4f19\u4f34\u6765\u5230\u7c73\u4e91\uff0c\u76f8\u805a\u4e8e\u6b64\u90fd\u662f\u7f18\u54c8\u54c8\u54c8\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u300aPHP \u51fd\u6570\u5e76\u53d1\u7f16\u7a0b\u7684\u4fe1\u53f7\u91cf\u673a\u5236\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\uff0c\u5982\u679c\u4f60\u5bf9\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u975e\u5e38\u611f\u5174\u8da3\u6216\u8005\u6b63\u5728\u81ea\u5b66\uff0c\u90fd\u53ef\u4ee5\u5173\u6ce8\u6211\uff0c\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\uff01\u5f53\u7136\uff0c\u6709\u4ec0\u4e48\u5efa\u8bae\u4e5f\u6b22\u8fce\u5728\u8bc4\u8bba\u7559\u8a00\u63d0\u51fa\uff01\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n

\"PHP<\/p>\n

PHP \u51fd\u6570\u5e76\u53d1\u7f16\u7a0b\u7684\u4fe1\u53f7\u91cf\u673a\u5236<\/h2>\n

\u4ecb\u7ecd<\/strong><\/p>\n

\u4fe1\u53f7\u91cf\u662f\u4e00\u79cd\u540c\u6b65\u539f\u8bed\uff0c\u7528\u4e8e\u534f\u8c03\u5e76\u53d1\u7684\u51fd\u6570\u6267\u884c\u3002\u5b83\u5141\u8bb8\u63a7\u5236\u5668\u63a7\u5236\u53ef\u540c\u65f6\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u7684\u51fd\u6570\u6570\u91cf\u3002<\/p>\n

\u5b9e\u73b0<\/strong><\/p>\n

PHP \u63d0\u4f9b\u4e86 Semaphore<\/code> \u7c7b\u6765\u5b9e\u73b0\u4fe1\u53f7\u91cf\u3002\u5b83\u63d0\u4f9b\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n

    \n
  • acquire(int $permits)<\/code>\uff1a\u5c1d\u8bd5\u83b7\u53d6\u6307\u5b9a\u7684\u4fe1\u53f7\u91cf\u8bb8\u53ef\u3002<\/li>\n
  • release(int $permits)<\/code>\uff1a\u91ca\u653e\u6307\u5b9a\u7684\u4fe1\u53f7\u91cf\u8bb8\u53ef\u3002<\/li>\n
  • isEmpty()<\/code>: \u68c0\u67e5\u4fe1\u53f7\u91cf\u662f\u5426\u4e3a\u7a7a\uff08\u6ca1\u6709\u8bb8\u53ef\uff09\u3002<\/li>\n<\/ul>\n

    \u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n

    \u8003\u8651\u4e00\u4e2a\u9700\u8981\u63a7\u5236\u5bf9\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u8bbf\u95ee\u7684\u573a\u666f\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4fe1\u53f7\u91cf\u6765\u9650\u5236\u540c\u65f6\u53ef\u4ee5\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u51fd\u6570\u6570\u91cf\u3002<\/p>\n

    $semaphore = new Semaphore(MAX_CONNECTIONS);\n\n\/\/ \u83b7\u53d6\u4e00\u4e2a\u4fe1\u53f7\u91cf\u8bb8\u53ef\n$semaphore->acquire();\n\n\/\/ \u8bbf\u95ee\u6570\u636e\u5e93\n\n\/\/ \u91ca\u653e\u4fe1\u53f7\u91cf\u8bb8\u53ef\n$semaphore->release();<\/pre>\n
    \u539f\u7406<\/strong><\/p>\n
    acquire()<\/code> \u65b9\u6cd5\u4f1a\u5c1d\u8bd5\u83b7\u53d6\u4e00\u4e2a\u4fe1\u53f7\u91cf\u8bb8\u53ef\u3002\u5982\u679c\u4fe1\u53f7\u91cf\u4e2d\u6709\u8db3\u591f\u7684\u8bb8\u53ef\uff0c\u5b83\u5c06\u6210\u529f\u3002\u5426\u5219\uff0c\u5b83\u4f1a\u963b\u585e\u76f4\u5230\u8bb8\u53ef\u53ef\u7528\u3002<\/p>\n
    release()<\/code> \u65b9\u6cd5\u4f1a\u5c06\u4e00\u4e2a\u4fe1\u53f7\u91cf\u8bb8\u53ef\u91ca\u653e\u56de\u4fe1\u53f7\u91cf\u3002<\/p>\n
    \u901a\u8fc7\u9650\u5236\u4fe1\u53f7\u91cf\u8bb8\u53ef\u7684\u6570\u91cf\uff0c\u6211\u4eec\u53ef\u4ee5\u63a7\u5236\u540c\u65f6\u53ef\u4ee5\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u7684\u51fd\u6570\u6570\u91cf\u3002<\/p>\n
    \u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n
      \n
    • \u786e\u4fdd\u5728\u4f7f\u7528\u4fe1\u53f7\u91cf\u540e\u59cb\u7ec8\u91ca\u653e\u8bb8\u53ef\u3002<\/li>\n
    • \u5728\u51fd\u6570\u4e2d\u4f7f\u7528 try...finally<\/code> \u5757\u6765\u786e\u4fdd\u5728\u5f02\u5e38\u53d1\u751f\u65f6\u91ca\u653e\u8bb8\u53ef\u3002<\/li>\n
    • \u4ed4\u7ec6\u8003\u8651\u4fe1\u53f7\u91cf\u8bb8\u53ef\u7684\u6570\u91cf\uff0c\u4ee5\u907f\u514d\u6b7b\u9501\u3002<\/li>\n<\/ul>\n
      \u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"
      PHP \u51fd\u6570\u5e76\u53d1\u7f16\u7a0b\u7684\u4fe1\u53f7\u91cf\u673a\u5236 \u6b22\u8fce\u5404\u4f4d\u5c0f\u4f19\u4f34\u6765\u5230\u7c73\u4e91\uff0c\u76f8\u805a\u4e8e\u6b64\u90fd\u662f\u7f18\u54c8\u54c8\u54c8\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u300aPHP \u51fd\u6570\u5e76\u53d1\u7f16\u7a0b\u7684\u4fe1\u53f7\u91cf\u673a\u5236\u300b\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\uff0c\u5982\u679c\u4f60\u5bf9\u6587\u7ae0\u76f8\u5173\u7684\u77e5\u8bc6\u975e\u5e38\u611f\u5174\u8da3\u6216\u8005\u6b63\u5728\u81ea\u5b66\uff0c\u90fd\u53ef\u4ee5\u5173\u6ce8\u6211\uff0c\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\uff01\u5f53\u7136\uff0c\u6709\u4ec0\u4e48\u5efa\u8bae\u4e5f\u6b22\u8fce\u5728\u8bc4\u8bba\u7559\u8a00\u63d0\u51fa\uff01\u4e00\u8d77\u5b66\u4e60\uff01 PHP \u51fd\u6570\u5e76\u53d1\u7f16\u7a0b\u7684\u4fe1\u53f7\u91cf\u673a\u5236 \u4ecb\u7ecd \u4fe1\u53f7\u91cf\u662f\u4e00\u79cd\u540c\u6b65\u539f\u8bed\uff0c\u7528\u4e8e\u534f\u8c03\u5e76\u53d1\u7684\u51fd\u6570\u6267\u884c\u3002\u5b83\u5141\u8bb8\u63a7\u5236\u5668\u63a7\u5236\u53ef\u540c\u65f6\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u7684\u51fd\u6570\u6570\u91cf\u3002 \u5b9e\u73b0 PHP \u63d0\u4f9b\u4e86 Semaphore \u7c7b\u6765\u5b9e\u73b0\u4fe1\u53f7\u91cf\u3002\u5b83\u63d0\u4f9b\u4ee5\u4e0b\u65b9\u6cd5\uff1a acquire(int $permits)\uff1a\u5c1d\u8bd5\u83b7\u53d6\u6307\u5b9a\u7684\u4fe1\u53f7\u91cf\u8bb8\u53ef\u3002 release(int $permits)\uff1a\u91ca\u653e\u6307\u5b9a\u7684\u4fe1\u53f7\u91cf\u8bb8\u53ef\u3002 isEmpty(): \u68c0\u67e5\u4fe1\u53f7\u91cf\u662f\u5426\u4e3a\u7a7a\uff08\u6ca1\u6709\u8bb8\u53ef\uff09\u3002 \u5b9e\u6218\u6848\u4f8b \u8003\u8651\u4e00\u4e2a\u9700\u8981\u63a7\u5236\u5bf9\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u8bbf\u95ee\u7684\u573a\u666f\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4fe1\u53f7\u91cf\u6765\u9650\u5236\u540c\u65f6\u53ef\u4ee5\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u51fd\u6570\u6570\u91cf\u3002 $semaphore = new Semaphore(MAX_CONNECTIONS); \/\/ \u83b7\u53d6\u4e00\u4e2a\u4fe1\u53f7\u91cf\u8bb8\u53ef $semaphore->acquire(); \/\/ \u8bbf\u95ee\u6570\u636e\u5e93 \/\/ \u91ca\u653e\u4fe1\u53f7\u91cf\u8bb8\u53ef $semaphore->release(); \u539f\u7406 acquire() \u65b9\u6cd5\u4f1a\u5c1d\u8bd5\u83b7\u53d6\u4e00\u4e2a\u4fe1\u53f7\u91cf\u8bb8\u53ef\u3002\u5982\u679c\u4fe1\u53f7\u91cf\u4e2d\u6709\u8db3\u591f\u7684\u8bb8\u53ef\uff0c\u5b83\u5c06\u6210\u529f\u3002\u5426\u5219\uff0c\u5b83\u4f1a\u963b\u585e\u76f4\u5230\u8bb8\u53ef\u53ef\u7528\u3002 release() \u65b9\u6cd5\u4f1a\u5c06\u4e00\u4e2a\u4fe1\u53f7\u91cf\u8bb8\u53ef\u91ca\u653e\u56de\u4fe1\u53f7\u91cf\u3002 \u901a\u8fc7\u9650\u5236\u4fe1\u53f7\u91cf\u8bb8\u53ef\u7684\u6570\u91cf\uff0c\u6211\u4eec\u53ef\u4ee5\u63a7\u5236\u540c\u65f6\u53ef\u4ee5\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u7684\u51fd\u6570\u6570\u91cf\u3002 \u6ce8\u610f\u4e8b\u9879 \u786e\u4fdd\u5728\u4f7f\u7528\u4fe1\u53f7\u91cf\u540e\u59cb\u7ec8\u91ca\u653e\u8bb8\u53ef\u3002 \u5728\u51fd\u6570\u4e2d\u4f7f\u7528 try…finally \u5757\u6765\u786e\u4fdd\u5728\u5f02\u5e38\u53d1\u751f\u65f6\u91ca\u653e\u8bb8\u53ef\u3002 \u4ed4\u7ec6\u8003\u8651\u4fe1\u53f7\u91cf\u8bb8\u53ef\u7684\u6570\u91cf\uff0c\u4ee5\u907f\u514d\u6b7b\u9501\u3002 \u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-47822","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47822","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=47822"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47822\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47822"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47822"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}