{"id":47699,"date":"2024-12-02T14:20:01","date_gmt":"2024-12-02T06:20:01","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47699\/"},"modified":"2024-12-02T14:20:01","modified_gmt":"2024-12-02T06:20:01","slug":"php-%e5%87%bd%e6%95%b0%e6%80%8e%e4%b9%88%e8%bf%94%e5%9b%9e%e5%80%bc","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47699\/","title":{"rendered":"PHP \u51fd\u6570\u600e\u4e48\u8fd4\u56de\u503c"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP \u51fd\u6570\u600e\u4e48\u8fd4\u56de\u503c<\/h1>\n<p>\u5927\u5bb6\u597d\uff0c\u4eca\u5929\u672c\u4eba\u7ed9\u5927\u5bb6\u5e26\u6765\u6587\u7ae0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aPHP \u51fd\u6570\u600e\u4e48\u8fd4\u56de\u503c\u300b<\/span>\uff0c\u6587\u4e2d\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span><\/span>\uff0c\u5982\u679c\u4f60\u5bf9<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u90a3\u5c31\u8bf7\u5404\u4f4d\u670b\u53cb\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427~\u5e0c\u671b\u80fd\u771f\u6b63\u5e2e\u5230\u4f60\u4eec\uff0c\u8c22\u8c22\uff01<\/p>\n<p>PHP \u51fd\u6570\u4f7f\u7528 return \u8bed\u53e5\u8fd4\u56de\u503c\uff0c\u53ef\u4ee5\u662f\u4efb\u4f55\u6570\u636e\u7c7b\u578b\u3002\u8fd4\u56de\u503c\u7c7b\u578b\uff1a \u51fd\u6570\u53ef\u4ee5\u8fd4\u56de\u6807\u91cf\u3001\u6570\u7ec4\u3001\u5bf9\u8c61\u6216\u81ea\u5b9a\u4e49\u7c7b\u578b\u3002\u8bed\u6cd5\uff1a return \u8bed\u53e5\u540e\u9762\u53ef\u4ee5\u8ddf\u968f\u8868\u8fbe\u5f0f\u6216\u53d8\u91cf\u3002\u5b9e\u6218\u6848\u4f8b\uff1a calculateArea \u51fd\u6570\u8fd4\u56de\u7ed9\u5b9a\u957f\u5ea6\u548c\u5bbd\u5ea6\u7684\u9762\u79ef\u3002\u591a\u4e2a\u8fd4\u56de\u503c\uff1a \u901a\u8fc7\u4f7f\u7528\u6570\u7ec4\u6216\u5bf9\u8c61\u8fd4\u56de\u591a\u4e2a\u503c\u3002\u9ed8\u8ba4\u8fd4\u56de\u503c\uff1a \u672a\u660e\u786e\u8fd4\u56de\u65f6\uff0c\u51fd\u6570\u8fd4\u56de NULL\u3002\u9650\u5236\uff1a \u51fd\u6570\u53ea\u80fd\u6709\u4e00\u4e2a return \u8bed\u53e5\uff0c\u4e00\u65e6\u6267\u884c\u5373\u9000\u51fa\u51fd\u6570\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729931187671ca7b38136b.jpg\" class=\"aligncenter\" title=\"PHP \u51fd\u6570\u600e\u4e48\u8fd4\u56de\u503c\u63d2\u56fe\" alt=\"PHP \u51fd\u6570\u600e\u4e48\u8fd4\u56de\u503c\u63d2\u56fe\" \/><\/p>\n<h2>PHP \u51fd\u6570\u8fd4\u56de\u503c<\/h2>\n<p><strong>\u7b80\u4ecb<\/strong><\/p>\n<p>PHP \u51fd\u6570\u53ef\u4ee5\u901a\u8fc7 <code>return<\/code> \u8bed\u53e5\u8fd4\u56de\u503c\u3002\u8fd4\u56de\u503c\u53ef\u4ee5\u662f\u4efb\u4f55 PHP \u6570\u636e\u7c7b\u578b\uff0c\u5305\u62ec\u6807\u91cf\uff08\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5b57\u7b26\u4e32\u3001\u5e03\u5c14\u503c\uff09\u3001\u6570\u7ec4\u3001\u5bf9\u8c61\u6216\u5176\u4ed6\u81ea\u5b9a\u4e49\u7c7b\u578b\u3002<\/p>\n<p><strong>\u8bed\u6cd5<\/strong><\/p>\n<p><code>return<\/code> \u8bed\u53e5\u7528\u4e8e\u8fd4\u56de\u51fd\u6570\u7684\u503c\uff0c\u5b83\u540e\u9762\u53ef\u4ee5\u8ddf\u968f\u4e00\u4e2a\u8868\u8fbe\u5f0f\u6216\u4e00\u4e2a\u53d8\u91cf\u3002<\/p>\n<pre>function sum($a, $b) {\n  return $a + $b;\n}<\/pre>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528 <code>return<\/code> \u8bed\u53e5\u7684\u7b80\u5355\u793a\u4f8b\uff1a<\/p>\n<pre>&lt;?php\nfunction calculateArea($length, $width) {\n  return $length * $width;\n}\n\n$length = 5;\n$width = 10;\n\n$area = calculateArea($length, $width);\n\necho \"\u9762\u79ef\uff1a $area\";  \/\/ \u8f93\u51fa\u9762\u79ef<\/pre>\n<p><strong>\u591a\u4e2a\u8fd4\u56de\u503c<\/strong><\/p>\n<p>PHP \u4e0d\u652f\u6301\u4f20\u7edf\u610f\u4e49\u4e0a\u7684\u591a\u4e2a\u8fd4\u56de\u503c\u3002\u4f46\u662f\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u6570\u7ec4\u6216\u5bf9\u8c61\u5c06\u591a\u4e2a\u503c\u4f5c\u4e3a\u4e00\u4e2a\u6574\u4f53\u8fd4\u56de\u503c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>function getCoordinates() {\n  return ['x' =&gt; 10, 'y' =&gt; 20];\n}<\/pre>\n<p><strong>\u51fd\u6570\u7684\u9ed8\u8ba4\u8fd4\u56de\u503c<\/strong><\/p>\n<p>\u5728\u6ca1\u6709\u663e\u5f0f\u4f7f\u7528 <code>return<\/code> \u8bed\u53e5\u7684\u60c5\u51b5\u4e0b\uff0cPHP \u51fd\u6570\u5c06\u8fd4\u56de <code>NULL<\/code> \u503c\u3002\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u610f\u5916\u7684\u7ed3\u679c\uff0c\u56e0\u6b64\u5efa\u8bae\u59cb\u7ec8\u660e\u786e\u8fd4\u56de\u4e00\u4e2a\u503c\uff0c\u5373\u4f7f\u5b83\u53ea\u662f <code>NULL<\/code>\u3002<\/p>\n<p><strong>\u6ce8\u610f<\/strong><\/p>\n<ul>\n<li>\u4e00\u4e2a\u51fd\u6570\u53ea\u80fd\u6709\u4e00\u4e2a <code>return<\/code> \u8bed\u53e5\u3002<\/li>\n<li>\u4e00\u65e6\u6267\u884c\u4e86 <code>return<\/code> \u8bed\u53e5\uff0c\u51fd\u6570\u5c06\u7acb\u5373\u9000\u51fa\u3002<\/li>\n<li><code>return<\/code> \u8bed\u53e5\u4e0d\u80fd\u5728\u7c7b\u65b9\u6cd5\u4e2d\u58f0\u660e\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u7236\u7c7b\u7684\u65b9\u6cd5\u6765\u7ee7\u627f\u3002<\/li>\n<\/ul>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aPHP \u51fd\u6570\u600e\u4e48\u8fd4\u56de\u503c\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP \u51fd\u6570\u600e\u4e48\u8fd4\u56de\u503c \u5927\u5bb6\u597d\uff0c\u4eca\u5929\u672c\u4eba\u7ed9\u5927\u5bb6\u5e26\u6765\u6587\u7ae0\u300aPHP \u51fd\u6570\u600e\u4e48\u8fd4\u56de\u503c\u300b\uff0c\u6587\u4e2d\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230\uff0c\u5982\u679c\u4f60\u5bf9\u6587\u7ae0\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u90a3\u5c31\u8bf7\u5404\u4f4d\u670b\u53cb\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427~\u5e0c\u671b\u80fd\u771f\u6b63\u5e2e\u5230\u4f60\u4eec\uff0c\u8c22\u8c22\uff01 PHP \u51fd\u6570\u4f7f\u7528 return \u8bed\u53e5\u8fd4\u56de\u503c\uff0c\u53ef\u4ee5\u662f\u4efb\u4f55\u6570\u636e\u7c7b\u578b\u3002\u8fd4\u56de\u503c\u7c7b\u578b\uff1a \u51fd\u6570\u53ef\u4ee5\u8fd4\u56de\u6807\u91cf\u3001\u6570\u7ec4\u3001\u5bf9\u8c61\u6216\u81ea\u5b9a\u4e49\u7c7b\u578b\u3002\u8bed\u6cd5\uff1a return \u8bed\u53e5\u540e\u9762\u53ef\u4ee5\u8ddf\u968f\u8868\u8fbe\u5f0f\u6216\u53d8\u91cf\u3002\u5b9e\u6218\u6848\u4f8b\uff1a calculateArea \u51fd\u6570\u8fd4\u56de\u7ed9\u5b9a\u957f\u5ea6\u548c\u5bbd\u5ea6\u7684\u9762\u79ef\u3002\u591a\u4e2a\u8fd4\u56de\u503c\uff1a \u901a\u8fc7\u4f7f\u7528\u6570\u7ec4\u6216\u5bf9\u8c61\u8fd4\u56de\u591a\u4e2a\u503c\u3002\u9ed8\u8ba4\u8fd4\u56de\u503c\uff1a \u672a\u660e\u786e\u8fd4\u56de\u65f6\uff0c\u51fd\u6570\u8fd4\u56de NULL\u3002\u9650\u5236\uff1a \u51fd\u6570\u53ea\u80fd\u6709\u4e00\u4e2a return \u8bed\u53e5\uff0c\u4e00\u65e6\u6267\u884c\u5373\u9000\u51fa\u51fd\u6570\u3002 PHP \u51fd\u6570\u8fd4\u56de\u503c \u7b80\u4ecb PHP \u51fd\u6570\u53ef\u4ee5\u901a\u8fc7 return \u8bed\u53e5\u8fd4\u56de\u503c\u3002\u8fd4\u56de\u503c\u53ef\u4ee5\u662f\u4efb\u4f55 PHP \u6570\u636e\u7c7b\u578b\uff0c\u5305\u62ec\u6807\u91cf\uff08\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5b57\u7b26\u4e32\u3001\u5e03\u5c14\u503c\uff09\u3001\u6570\u7ec4\u3001\u5bf9\u8c61\u6216\u5176\u4ed6\u81ea\u5b9a\u4e49\u7c7b\u578b\u3002 \u8bed\u6cd5 return \u8bed\u53e5\u7528\u4e8e\u8fd4\u56de\u51fd\u6570\u7684\u503c\uff0c\u5b83\u540e\u9762\u53ef\u4ee5\u8ddf\u968f\u4e00\u4e2a\u8868\u8fbe\u5f0f\u6216\u4e00\u4e2a\u53d8\u91cf\u3002 function sum($a, $b) { return $a + $b; } \u5b9e\u6218\u6848\u4f8b \u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528 return \u8bed\u53e5\u7684\u7b80\u5355\u793a\u4f8b\uff1a &lt;?php function calculateArea($length, $width) { return $length * $width; } $length [&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-47699","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47699","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=47699"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47699\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}