{"id":202434,"date":"2025-05-13T10:07:41","date_gmt":"2025-05-13T02:07:41","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202434\/"},"modified":"2025-05-13T10:07:41","modified_gmt":"2025-05-13T02:07:41","slug":"php-%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e6%8c%87%e5%8d%97%ef%bc%9a%e4%b8%8e%e5%b9%b6%e5%8f%91%e7%bc%96%e7%a8%8b%e7%9a%84%e5%85%b3%e8%81%94","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202434\/","title":{"rendered":"PHP \u51fd\u6570\u5f0f\u7f16\u7a0b\u6307\u5357\uff1a\u4e0e\u5e76\u53d1\u7f16\u7a0b\u7684\u5173\u8054"},"content":{"rendered":"

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

PHP \u51fd\u6570\u5f0f\u7f16\u7a0b\u6307\u5357\uff1a\u4e0e\u5e76\u53d1\u7f16\u7a0b\u7684\u5173\u8054<\/h1>\n

\u5bf9\u4e8e\u4e00\u4e2a\u6587\u7ae0\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7262\u56fa\u624e\u5b9e\u7684\u57fa\u7840\u662f\u5341\u5206\u91cd\u8981\u7684\uff0c\u5c31\u6765\u5e26\u5927\u5bb6\u4e00\u70b9\u70b9\u7684\u638c\u63e1\u57fa\u7840\u77e5\u8bc6\u70b9\u3002\u4eca\u5929\u672c\u7bc7\u6587\u7ae0\u5e26\u5927\u5bb6\u4e86\u89e3\u300aPHP \u51fd\u6570\u5f0f\u7f16\u7a0b\u6307\u5357\uff1a\u4e0e\u5e76\u53d1\u7f16\u7a0b\u7684\u5173\u8054\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e86\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u5feb\u70b9\u6536\u85cf\u8d77\u6765\u5427\uff0c\u5426\u5219\u9700\u8981\u65f6\u5c31\u627e\u4e0d\u5230\u4e86\uff01<\/p>\n

<\/p>\n

PHP \u51fd\u6570\u5f0f\u7f16\u7a0b\u6307\u5357\uff1a\u4e0e\u5e76\u53d1\u7f16\u7a0b\u7684\u5173\u8054<\/strong><\/p>\n

\u51fd\u6570\u5f0f\u7f16\u7a0b (FP) \u662f\u4e00\u79cd\u7f16\u7a0b\u8303\u5f0f\uff0c\u5b83\u5f3a\u8c03\u7528\u7eaf\u51fd\u6570\u548c\u4e0d\u53ef\u53d8\u6570\u636e\u6765\u6784\u5efa\u5e94\u7528\u7a0b\u5e8f\u3002PHP \u662f\u4f20\u7edf\u4e0a\u4ee5\u547d\u4ee4\u5f0f\u98ce\u683c\u7f16\u7a0b\u7684\u8bed\u8a00\uff0c\u4f46\u5b83\u53ef\u4ee5\u901a\u8fc7\u5c06 FP \u6280\u672f\u96c6\u6210\u5230\u4ee3\u7801\u5e93\u4e2d\u6765\u8fdb\u884c\u62d3\u5c55\u3002<\/p>\n

FP \u548c\u5e76\u53d1\u7f16\u7a0b<\/strong><\/p>\n

\u5e76\u53d1\u7f16\u7a0b\u6d89\u53ca\u540c\u65f6\u8fd0\u884c\u591a\u4e2a\u7ebf\u7a0b\u6216\u8fdb\u7a0b\u3002FP \u7684\u975e\u526f\u4f5c\u7528\u548c\u4e0d\u53ef\u53d8\u6027\u7684\u7279\u6027\u4f7f\u5176\u7279\u522b\u9002\u5408\u5e76\u53d1\u7f16\u7a0b\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u6d88\u9664\u5171\u4eab\u72b6\u6001\u5e26\u6765\u7684\u7ade\u4e89\u6761\u4ef6\u548c\u5176\u4ed6\u95ee\u9898\u3002<\/p>\n

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

\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u5b9e\u9645\u793a\u4f8b\u6765\u8bf4\u660e PHP \u4e2d\u7684 FP \u548c\u5e76\u53d1\u7f16\u7a0b\u3002\u8003\u8651\u4e0b\u9762\u8fd9\u4e2a\u547d\u4ee4\u5f0f\u51fd\u6570\uff0c\u5b83\u8ba1\u7b97\u4e00\u4e2a\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u6570\u5b57\u7684\u603b\u548c\uff1a<\/p>\n

function sum($arr) {\n  $total = 0;\n  foreach ($arr as $value) {\n    $total += $value;\n  }\n  return $total;\n}<\/pre>\n
\u8fd9\u4e2a\u51fd\u6570\u6709\u526f\u4f5c\u7528\uff0c\u5b83\u4f1a\u4fee\u6539 $total<\/code> \u53d8\u91cf\u3002\u6b64\u5916\uff0c\u5b83\u4e5f\u4e0d\u80fd\u540c\u65f6\u8fd0\u884c\uff0c\u56e0\u4e3a\u5b83\u4f1a\u7b49\u5f85\u6bcf\u4e2a\u5143\u7d20\u7684\u8ba1\u7b97\u624d\u80fd\u5b8c\u6210\u3002<\/p>\n
\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 FP \u6280\u672f\u6765\u6539\u8fdb\u8fd9\u4e2a\u51fd\u6570\uff1a<\/p>\n
function sumFP($arr) {\n  return array_reduce($arr, function($carry, $item) {\n    return $carry + $item;\n  }, 0);\n}<\/pre>\n
array_reduce()<\/code> \u51fd\u6570\u662f\u4e00\u4e2a\u63a5\u53d7\u6570\u7ec4\u548c\u56de\u8c03\u51fd\u6570\u7684\u7b80\u6d01\u51fd\u6570\uff0c\u5b83\u8fd4\u56de\u4e00\u4e2a\u7d2f\u79ef\u503c\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u56de\u8c03\u51fd\u6570\u662f\u4e00\u4e2a\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff08carry<\/code> \u548c item<\/code>\uff09\u7684\u7eaf\u51fd\u6570\uff0c\u5e76\u4e14\u8fd4\u56de\u5b83\u4eec\u76f8\u52a0\u7684\u7ed3\u679c\u3002\u56e0\u6b64\uff0csumFP<\/code> \u51fd\u6570\u662f\u7eaf\u7684\uff0c\u5e76\u4e14\u53ef\u4ee5\u5e76\u53d1\u8fd0\u884c\u3002<\/p>\n
\u7ed3\u8bba<\/strong><\/p>\n
FP \u6280\u672f\u4e0e\u5e76\u53d1\u7f16\u7a0b\u76f8\u8f85\u76f8\u6210\uff0c\u63d0\u4f9b\u4e86\u4e00\u79cd\u6784\u5efa\u53ef\u6269\u5c55\u3001\u53ef\u9760\u548c\u9ad8\u6027\u80fd\u5e94\u7528\u7a0b\u5e8f\u7684\u5f3a\u5927\u65b9\u6cd5\u3002\u901a\u8fc7\u5c06 FP \u539f\u5219\u96c6\u6210\u5230 PHP \u4ee3\u7801\u5e93\u4e2d\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u5145\u5206\u5229\u7528 PHP \u8bed\u8a00\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u7ef4\u62a4\u6210\u672c\u4f4e\u3001\u5065\u58ee\u4e14\u5e76\u53d1\u53cb\u597d\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n
\u672c\u7bc7\u5173\u4e8e\u300aPHP \u51fd\u6570\u5f0f\u7f16\u7a0b\u6307\u5357\uff1a\u4e0e\u5e76\u53d1\u7f16\u7a0b\u7684\u5173\u8054\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
PHP \u51fd\u6570\u5f0f\u7f16\u7a0b\u6307\u5357\uff1a\u4e0e\u5e76\u53d1\u7f16...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202434","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202434","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202434"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202434\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}