{"id":47828,"date":"2024-12-02T09:02:40","date_gmt":"2024-12-02T01:02:40","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47828\/"},"modified":"2024-12-02T09:02:40","modified_gmt":"2024-12-02T01:02:40","slug":"php%e5%87%bd%e6%95%b0%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e9%bb%98%e8%ae%a4%e5%8f%82%e6%95%b0%e5%80%bc%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47828\/","title":{"rendered":"PHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c\uff1f<\/h1>\n<p>\u4f60\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aPHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c\uff1f\u300b<\/span>\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01<\/p>\n<p>PHP \u4e2d\u51fd\u6570\u7684\u9ed8\u8ba4\u53c2\u6570\u503c\u5141\u8bb8\u5728\u51fd\u6570\u8c03\u7528\u4e2d\u7701\u7f3a\u53ef\u9009\u53c2\u6570\uff0c\u4f7f\u7528\u51fd\u6570\u5b9a\u4e49\u65f6\u8bbe\u5b9a\u7684\u9ed8\u8ba4\u503c\u3002\u4f8b\u5982\uff1a\u5f53\u4e0d\u4f20\u9012\u7b2c\u4e8c\u4e2a\u53c2\u6570\u65f6\uff0cgreet($name, $salutation = &#8216;Hello&#8217;) \u5c06\u6253\u5370 &#8220;Hello, $name!&#8221;\uff1b\u82e5\u4f20\u9012 &#8220;Good morning&#8221; \u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0c\u5219\u6253\u5370 &#8220;Good morning, $name!&#8221;\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729938399671cc3df71400.jpg\" class=\"aligncenter\" title=\"PHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c\uff1f\u63d2\u56fe\" alt=\"PHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u51fd\u6570\u4e2d\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c<\/strong><\/p>\n<p>\u5728 PHP \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c\u6765\u7b80\u5316\u51fd\u6570\u7684\u8c03\u7528\uff0c\u7279\u522b\u662f\u5f53\u51fd\u6570\u7684\u53c2\u6570\u53ef\u9009\u65f6\u3002\u9ed8\u8ba4\u53c2\u6570\u503c\u6307\u5b9a\u4e86\u5f53\u8be5\u53c2\u6570\u672a\u5728\u51fd\u6570\u8c03\u7528\u4e2d\u4f20\u9012\u65f6\u7684\u503c\u3002<\/p>\n<p><strong>\u8bed\u6cd5<\/strong><\/p>\n<pre>function myFunction($param1, $param2 = 'default_value') {\n  \/\/ \u51fd\u6570\u4f53\n}<\/pre>\n<ul>\n<li><code>$param1<\/code> \u662f\u4e00\u4e2a\u5fc5\u9700\u53c2\u6570\uff0c\u5fc5\u987b\u5728\u51fd\u6570\u8c03\u7528\u4e2d\u4f20\u9012\u3002<\/li>\n<li><code>$param2<\/code> \u662f\u4e00\u4e2a\u53ef\u9009\u53c2\u6570\uff0c\u5982\u679c\u5728\u51fd\u6570\u8c03\u7528\u4e2d\u672a\u4f20\u9012\uff0c\u5219\u4f7f\u7528\u9ed8\u8ba4\u503c &#8216;default_value&#8217;\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c\u7684\u51fd\u6570\u793a\u4f8b\uff1a<\/p>\n<pre>&lt;?php\nfunction greet($name, $salutation = 'Hello') {\n  echo \"$salutation, $name!\";\n}\n\ngreet('John'); \/\/ \u8f93\u51fa: Hello, John!\ngreet('Mary', 'Good morning'); \/\/ \u8f93\u51fa: Good morning, Mary!\n?&gt;<\/pre>\n<p>\u5728\u7b2c\u4e00\u4e2a\u8c03\u7528\u4e2d\uff0c\u672a\u4f20\u9012 <code>$salutation<\/code> \u53c2\u6570\uff0c\u56e0\u6b64\u4f7f\u7528\u4e86\u9ed8\u8ba4\u503c &#8216;Hello&#8217;\u3002\u5728\u7b2c\u4e8c\u4e2a\u8c03\u7528\u4e2d\uff0c\u4f20\u9012\u4e86 &#8216;Good morning&#8217; \u4f5c\u4e3a <code>$salutation<\/code> \u53c2\u6570\uff0c\u5b83\u8986\u76d6\u4e86\u9ed8\u8ba4\u503c\u3002<\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u9ed8\u8ba4\u53c2\u6570\u503c\u5fc5\u987b\u4f4d\u4e8e\u53c2\u6570\u5217\u8868\u7684\u672b\u5c3e\u3002<\/li>\n<li>\u5982\u679c\u5411\u4e00\u4e2a\u5df2\u5177\u6709\u9ed8\u8ba4\u53c2\u6570\u503c\u7684\u53ef\u9009\u53c2\u6570\u4f20\u9012\u4e86 null \u503c\uff0c\u5219\u4e0d\u4f1a\u4f7f\u7528\u9ed8\u8ba4\u503c\u3002<\/li>\n<li>\u9ed8\u8ba4\u53c2\u6570\u503c\u53ea\u80fd\u5728\u51fd\u6570\u5b9a\u4e49\u65f6\u6307\u5b9a\uff0c\u4e0d\u80fd\u5728\u51fd\u6570\u8c03\u7528\u65f6\u52a8\u6001\u4fee\u6539\u3002<\/li>\n<\/ul>\n<p>\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300aPHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u7c73\u4e91\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c\uff1f \u4f60\u5728\u5b66\u4e60\u6587\u7ae0\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587\u300aPHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c\uff1f\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01 PHP \u4e2d\u51fd\u6570\u7684\u9ed8\u8ba4\u53c2\u6570\u503c\u5141\u8bb8\u5728\u51fd\u6570\u8c03\u7528\u4e2d\u7701\u7f3a\u53ef\u9009\u53c2\u6570\uff0c\u4f7f\u7528\u51fd\u6570\u5b9a\u4e49\u65f6\u8bbe\u5b9a\u7684\u9ed8\u8ba4\u503c\u3002\u4f8b\u5982\uff1a\u5f53\u4e0d\u4f20\u9012\u7b2c\u4e8c\u4e2a\u53c2\u6570\u65f6\uff0cgreet($name, $salutation = &#8216;Hello&#8217;) \u5c06\u6253\u5370 &#8220;Hello, $name!&#8221;\uff1b\u82e5\u4f20\u9012 &#8220;Good morning&#8221; \u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0c\u5219\u6253\u5370 &#8220;Good morning, $name!&#8221;\u3002 PHP \u51fd\u6570\u4e2d\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c \u5728 PHP \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c\u6765\u7b80\u5316\u51fd\u6570\u7684\u8c03\u7528\uff0c\u7279\u522b\u662f\u5f53\u51fd\u6570\u7684\u53c2\u6570\u53ef\u9009\u65f6\u3002\u9ed8\u8ba4\u53c2\u6570\u503c\u6307\u5b9a\u4e86\u5f53\u8be5\u53c2\u6570\u672a\u5728\u51fd\u6570\u8c03\u7528\u4e2d\u4f20\u9012\u65f6\u7684\u503c\u3002 \u8bed\u6cd5 function myFunction($param1, $param2 = &#8216;default_value&#8217;) { \/\/ \u51fd\u6570\u4f53 } $param1 \u662f\u4e00\u4e2a\u5fc5\u9700\u53c2\u6570\uff0c\u5fc5\u987b\u5728\u51fd\u6570\u8c03\u7528\u4e2d\u4f20\u9012\u3002 $param2 \u662f\u4e00\u4e2a\u53ef\u9009\u53c2\u6570\uff0c\u5982\u679c\u5728\u51fd\u6570\u8c03\u7528\u4e2d\u672a\u4f20\u9012\uff0c\u5219\u4f7f\u7528\u9ed8\u8ba4\u503c &#8216;default_value&#8217;\u3002 \u5b9e\u6218\u6848\u4f8b \u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u503c\u7684\u51fd\u6570\u793a\u4f8b\uff1a &lt;?php function greet($name, $salutation = &#8216;Hello&#8217;) { echo &#8220;$salutation, $name!&#8221;; } greet(&#8216;John&#8217;); \/\/ \u8f93\u51fa: Hello, John! greet(&#8216;Mary&#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-47828","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47828","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=47828"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47828\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47828"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47828"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47828"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}