{"id":47140,"date":"2024-12-02T10:16:04","date_gmt":"2024-12-02T02:16:04","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47140\/"},"modified":"2024-12-02T10:16:04","modified_gmt":"2024-12-02T02:16:04","slug":"php%e5%87%bd%e6%95%b0%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e5%87%bd%e6%95%b0%e6%8c%87%e9%92%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47140\/","title":{"rendered":"PHP\u51fd\u6570\u5982\u4f55\u5b9e\u73b0\u51fd\u6570\u6307\u9488\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP\u51fd\u6570\u5982\u4f55\u5b9e\u73b0\u51fd\u6570\u6307\u9488\uff1f<\/h1>\n<p>\u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u5206\u4eab\u300aPHP\u51fd\u6570\u5982\u4f55\u5b9e\u73b0\u51fd\u6570\u6307\u9488\uff1f\u300b\uff0c\u8986\u76d6\u4e86\u6587\u7ae0\u7684\u5e38\u89c1\u57fa\u7840\u77e5\u8bc6\uff0c\u5176\u5b9e\u4e00\u4e2a\u8bed\u8a00\u7684\u5168\u90e8\u77e5\u8bc6\u70b9\u4e00\u7bc7\u6587\u7ae0\u662f\u4e0d\u53ef\u80fd\u8bf4\u5b8c\u7684\uff0c\u4f46\u5e0c\u671b\u901a\u8fc7\u8fd9\u4e9b\u95ee\u9898\uff0c\u8ba9\u8bfb\u8005\u5bf9\u81ea\u5df1\u7684\u638c\u63e1\u7a0b\u5ea6\u6709\u4e00\u5b9a\u7684\u8ba4\u8bc6(B \u6570)\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u66f4\u597d\u7684\u638c\u63e1\u5b83\u3002<\/p>\n<p>\u5728 PHP \u4e2d\u5b9e\u73b0\u51fd\u6570\u6307\u9488\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 call_user_func \u51fd\u6570\u3002\u5b83\u6839\u636e\u63d0\u4f9b\u7684\u56de\u8c03\u51fd\u6570\u540d\u6216\u95ed\u5305\u8c03\u7528\u51fd\u6570\uff0c\u5141\u8bb8\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u8c03\u7528\u548c\u66f4\u6539\u53ef\u8c03\u7528\u7684\u51fd\u6570\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241025\/1729867904671bb080905fe.jpg\" class=\"aligncenter\" title=\"PHP\u51fd\u6570\u5982\u4f55\u5b9e\u73b0\u51fd\u6570\u6307\u9488\uff1f\u63d2\u56fe\" alt=\"PHP\u51fd\u6570\u5982\u4f55\u5b9e\u73b0\u51fd\u6570\u6307\u9488\uff1f\u63d2\u56fe\" \/><\/p>\n<h2>PHP \u51fd\u6570\u5982\u4f55\u5b9e\u73b0\u51fd\u6570\u6307\u9488\uff1f<\/h2>\n<p>\u5728 PHP \u4e2d\uff0c\u51fd\u6570\u6307\u9488\u5141\u8bb8\u6211\u4eec\u5c06\u51fd\u6570\u4f5c\u4e3a\u53e6\u4e00\u4e2a\u51fd\u6570\u7684\u53c2\u6570\u4f20\u9012\u3002\u8fd9\u610f\u5473\u7740\u6211\u4eec\u53ef\u4ee5\u52a8\u6001\u5730\u8c03\u7528\u51fd\u6570\uff0c\u5e76\u4e14\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u66f4\u6539\u53ef\u8c03\u7528\u7684\u51fd\u6570\u3002<\/p>\n<h3>\u5b9e\u73b0\u65b9\u5f0f<\/h3>\n<p>PHP \u4f7f\u7528 <strong>call_user_func<\/strong> \u51fd\u6570\u6765\u5b9e\u73b0\u51fd\u6570\u6307\u9488\u3002\u5b83\u6839\u636e\u63d0\u4f9b\u7684\u56de\u8c03\u51fd\u6570\u540d\u6216\u95ed\u5305\u6765\u8c03\u7528\u51fd\u6570\u3002<\/p>\n<p>\u8bed\u6cd5\uff1a<\/p>\n<pre>call_user_func($callback, ...$params);<\/pre>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li><strong>$callback<\/strong>\uff1a\u4f5c\u4e3a\u56de\u8c03\u51fd\u6570\u7684\u51fd\u6570\u540d\u6216\u95ed\u5305<\/li>\n<li><strong>&#8230;$params<\/strong>\uff1a\u8981\u4f20\u9012\u7ed9\u56de\u8c03\u51fd\u6570\u7684\u53c2\u6570<\/li>\n<\/ul>\n<h3>\u5b9e\u6218\u6848\u4f8b<\/h3>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u51fd\u6570 <strong>calculate()<\/strong>\uff0c\u5b83\u6839\u636e\u64cd\u4f5c\uff08\u52a0\u6cd5\u3001\u51cf\u6cd5\u3001\u4e58\u6cd5\u6216\u9664\u6cd5\uff09\u8ba1\u7b97\u4e24\u4e2a\u6570\u5b57\u3002\u6211\u4eec\u4f7f\u7528\u51fd\u6570\u6307\u9488\u5c06\u5176\u4f20\u9012\u7ed9\u53e6\u4e00\u4e2a\u51fd\u6570 <strong>perform_operation()<\/strong>\uff0c\u8be5\u51fd\u6570\u57fa\u4e8e\u7528\u6237\u8f93\u5165\u8c03\u7528\u76f8\u5e94\u7684\u64cd\u4f5c\u3002<\/p>\n<pre>&lt;?php\n\n\/\/ \u5b9a\u4e49 calculate \u51fd\u6570\nfunction calculate($num1, $num2, $operation)\n{\n    switch ($operation) {\n        case '+':\n            return $num1 + $num2;\n        case '-':\n            return $num1 - $num2;\n        case '*':\n            return $num1 * $num2;\n        case '\/':\n            return $num1 \/ $num2;\n        default:\n            throw new InvalidArgumentException('Invalid operation.');\n    }\n}\n\n\/\/ \u5b9a\u4e49 perform_operation \u51fd\u6570\nfunction perform_operation($num1, $num2, $operation)\n{\n    \/\/ \u4f7f\u7528 call_user_func \u8c03\u7528 calculate \u51fd\u6570\n    return call_user_func('calculate', $num1, $num2, $operation);\n}\n\n\/\/ \u83b7\u53d6\u7528\u6237\u8f93\u5165\n$num1 = readline('Enter the first number: ');\n$num2 = readline('Enter the second number: ');\n$operation = readline('Enter the operation (+, -, *, \/): ');\n\n\/\/ \u8c03\u7528 perform_operation \u51fd\u6570\n$result = perform_operation($num1, $num2, $operation);\n\n\/\/ \u8f93\u51fa\u7ed3\u679c\necho \"The result is: $result\";\n?&gt;<\/pre>\n<p>\u6587\u4e2d\u5173\u4e8ephp,\u51fd\u6570\u6307\u9488\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300aPHP\u51fd\u6570\u5982\u4f55\u5b9e\u73b0\u51fd\u6570\u6307\u9488\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u51fd\u6570\u5982\u4f55\u5b9e\u73b0\u51fd\u6570\u6307\u9488\uff1f \u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u5206\u4eab\u300aPHP\u51fd\u6570\u5982\u4f55\u5b9e\u73b0\u51fd\u6570\u6307\u9488\uff1f\u300b\uff0c\u8986\u76d6\u4e86\u6587\u7ae0\u7684\u5e38\u89c1\u57fa\u7840\u77e5\u8bc6\uff0c\u5176\u5b9e\u4e00\u4e2a\u8bed\u8a00\u7684\u5168\u90e8\u77e5\u8bc6\u70b9\u4e00\u7bc7\u6587\u7ae0\u662f\u4e0d\u53ef\u80fd\u8bf4\u5b8c\u7684\uff0c\u4f46\u5e0c\u671b\u901a\u8fc7\u8fd9\u4e9b\u95ee\u9898\uff0c\u8ba9\u8bfb\u8005\u5bf9\u81ea\u5df1\u7684\u638c\u63e1\u7a0b\u5ea6\u6709\u4e00\u5b9a\u7684\u8ba4\u8bc6(B \u6570)\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u66f4\u597d\u7684\u638c\u63e1\u5b83\u3002 \u5728 PHP \u4e2d\u5b9e\u73b0\u51fd\u6570\u6307\u9488\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 call_user_func \u51fd\u6570\u3002\u5b83\u6839\u636e\u63d0\u4f9b\u7684\u56de\u8c03\u51fd\u6570\u540d\u6216\u95ed\u5305\u8c03\u7528\u51fd\u6570\uff0c\u5141\u8bb8\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u8c03\u7528\u548c\u66f4\u6539\u53ef\u8c03\u7528\u7684\u51fd\u6570\u3002 PHP \u51fd\u6570\u5982\u4f55\u5b9e\u73b0\u51fd\u6570\u6307\u9488\uff1f \u5728 PHP \u4e2d\uff0c\u51fd\u6570\u6307\u9488\u5141\u8bb8\u6211\u4eec\u5c06\u51fd\u6570\u4f5c\u4e3a\u53e6\u4e00\u4e2a\u51fd\u6570\u7684\u53c2\u6570\u4f20\u9012\u3002\u8fd9\u610f\u5473\u7740\u6211\u4eec\u53ef\u4ee5\u52a8\u6001\u5730\u8c03\u7528\u51fd\u6570\uff0c\u5e76\u4e14\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u66f4\u6539\u53ef\u8c03\u7528\u7684\u51fd\u6570\u3002 \u5b9e\u73b0\u65b9\u5f0f PHP \u4f7f\u7528 call_user_func \u51fd\u6570\u6765\u5b9e\u73b0\u51fd\u6570\u6307\u9488\u3002\u5b83\u6839\u636e\u63d0\u4f9b\u7684\u56de\u8c03\u51fd\u6570\u540d\u6216\u95ed\u5305\u6765\u8c03\u7528\u51fd\u6570\u3002 \u8bed\u6cd5\uff1a call_user_func($callback, &#8230;$params); \u5176\u4e2d\uff1a $callback\uff1a\u4f5c\u4e3a\u56de\u8c03\u51fd\u6570\u7684\u51fd\u6570\u540d\u6216\u95ed\u5305 &#8230;$params\uff1a\u8981\u4f20\u9012\u7ed9\u56de\u8c03\u51fd\u6570\u7684\u53c2\u6570 \u5b9e\u6218\u6848\u4f8b \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u51fd\u6570 calculate()\uff0c\u5b83\u6839\u636e\u64cd\u4f5c\uff08\u52a0\u6cd5\u3001\u51cf\u6cd5\u3001\u4e58\u6cd5\u6216\u9664\u6cd5\uff09\u8ba1\u7b97\u4e24\u4e2a\u6570\u5b57\u3002\u6211\u4eec\u4f7f\u7528\u51fd\u6570\u6307\u9488\u5c06\u5176\u4f20\u9012\u7ed9\u53e6\u4e00\u4e2a\u51fd\u6570 perform_operation()\uff0c\u8be5\u51fd\u6570\u57fa\u4e8e\u7528\u6237\u8f93\u5165\u8c03\u7528\u76f8\u5e94\u7684\u64cd\u4f5c\u3002 &lt;?php \/\/ \u5b9a\u4e49 calculate \u51fd\u6570 function calculate($num1, $num2, $operation) { switch ($operation) { case &#8216;+&#8217;: return $num1 + $num2; case &#8216;-&#8216;: return $num1 &#8211; $num2; case &#8216;*&#8217;: [&hellip;]<\/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-47140","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47140","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=47140"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47140\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}