{"id":756,"date":"2024-11-07T13:15:23","date_gmt":"2024-11-07T05:15:23","guid":{"rendered":"https:\/\/fwq.ai\/blog\/756\/"},"modified":"2024-11-07T13:15:23","modified_gmt":"2024-11-07T05:15:23","slug":"php-%e8%87%aa%e5%87%bd%e6%95%b0%e7%bc%96%e5%86%99%e4%b8%ad%e7%9a%84%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5%e5%88%86%e4%ba%ab","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/756\/","title":{"rendered":"PHP \u81ea\u51fd\u6570\u7f16\u5199\u4e2d\u7684\u6700\u4f73\u5b9e\u8df5\u5206\u4eab"},"content":{"rendered":"<p>php \u81ea\u51fd\u6570\u7f16\u5199\u6700\u4f73\u5b9e\u8df5\uff1a\u4f7f\u7528\u63cf\u8ff0\u6027\u540d\u79f0\uff1a\u6e05\u6670\u51c6\u786e\u5730\u53cd\u6620\u81ea\u51fd\u6570\u529f\u80fd\u3002\u58f0\u660e\u8f93\u5165\u548c\u8f93\u51fa\u7c7b\u578b\u63d0\u793a\uff1a\u589e\u5f3a\u7c7b\u578b\u5b89\u5168\u6027\u5e76\u63d0\u4f9b\u6587\u6863\u3002\u5904\u7406\u7a7a\u503c\uff1a\u4f7f\u7528 null \u68c0\u67e5\u6216\u9ed8\u8ba4\u503c\u6765\u5904\u7406\u7a7a\u503c\u3002\u4fdd\u6301\u7b80\u6d01\uff1a\u907f\u514d\u5c06\u591a\u4e2a\u64cd\u4f5c\u7ec4\u5408\u5230\u4e00\u4e2a\u81ea\u51fd\u6570\u4e2d\u3002\u907f\u514d\u526f\u4f5c\u7528\uff1a\u7f16\u5199\u7eaf\u51fd\u6570\uff0c\u4e0d\u4fee\u6539\u5168\u5c40\u72b6\u6001\u6216\u5916\u90e8\u53d8\u91cf\u3002\u6d4b\u8bd5\u81ea\u51fd\u6570\uff1a\u4f7f\u7528\u5355\u5143\u6d4b\u8bd5\u6765\u9a8c\u8bc1\u81ea\u51fd\u6570\u884c\u4e3a\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1157\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/172822446530798.jpg\" width=\"720\" height=\"288\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/172822446530798.jpg 720w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/172822446530798-300x120.jpg 300w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/172822446530798-670x268.jpg 670w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" title=\"PHP \u81ea\u51fd\u6570\u7f16\u5199\u4e2d\u7684\u6700\u4f73\u5b9e\u8df5\u5206\u4eab\u63d2\u56fe\" alt=\"PHP \u81ea\u51fd\u6570\u7f16\u5199\u4e2d\u7684\u6700\u4f73\u5b9e\u8df5\u5206\u4eab\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u81ea\u51fd\u6570\u7f16\u5199\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n<p><strong>\u524d\u8a00<\/strong><\/p>\n<p>\u81ea\u51fd\u6570\u662f PHP \u4e2d\u4e00\u79cd\u7b80\u6d01\u6709\u6548\u7684\u7f16\u7801\u673a\u5236\uff0c\u80fd\u591f\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u4e3a\u4e86\u7f16\u5199\u5e72\u51c0\u3001\u6709\u6548\u7684\u81ea\u51fd\u6570\uff0c\u9075\u5faa\u6700\u4f73\u5b9e\u8df5\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u5c06\u63a2\u8ba8 PHP \u81ea\u51fd\u6570\u7f16\u5199\u7684\u6700\u4f73\u5b9e\u8df5\uff0c\u5e76\u63d0\u4f9b\u5b9e\u9645\u6848\u4f8b\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201cPHP\u514d\u8d39\u5b66\u4e60\u7b14\u8bb0\uff08\u6df1\u5165\uff09\u201d\uff1b<\/p>\n<p><strong>\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n<ul>\n<li>\n<p><strong>\u4f7f\u7528\u63cf\u8ff0\u6027\u540d\u79f0\uff1a<\/strong> \u81ea\u51fd\u6570\u7684\u540d\u79f0\u5e94\u6e05\u6670\u7b80\u6d01\uff0c\u51c6\u786e\u53cd\u6620\u5176\u529f\u80fd\u3002\u907f\u514d\u4f7f\u7528\u542b\u7cca\u6216\u901a\u7528\u7684\u540d\u79f0\u3002<\/p>\n<pre>\/\/ \u907f\u514d\uff1a\nfunction doStuff() { ... }\n\n\/\/ \u66f4\u4f73\uff1a\nfunction calculateTotalAmount() { ... }<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<li>\n<p><strong>\u8f93\u5165\u548c\u8f93\u51fa\u7c7b\u578b\u63d0\u793a\uff1a<\/strong> \u58f0\u660e\u81ea\u51fd\u6570\u7684\u8f93\u5165\u548c\u8f93\u51fa\u7c7b\u578b\u63d0\u793a\uff0c\u4ee5\u589e\u5f3a\u7c7b\u578b\u5b89\u5168\u6027\u5e76\u63d0\u4f9b\u4ee3\u7801\u6587\u6863\u3002<\/p>\n<pre>function calculateTotalAmount(float $amount, int $quantity): float { ... }<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<li>\n<p><strong>\u5904\u7406\u7a7a\u503c\uff1a<\/strong> \u8003\u8651\u81ea\u51fd\u6570\u53ef\u80fd\u63a5\u6536\u6216\u8fd4\u56de\u7a7a\u503c\u7684\u60c5\u51b5\uff0c\u5e76\u4f7f\u7528 null \u68c0\u67e5\u6216\u9ed8\u8ba4\u503c\u6765\u5904\u7406\u8fd9\u4e9b\u60c5\u51b5\u3002<\/p>\n<pre>function getUserName(int $userId): ?string {\n$user = getUser($userId);\nreturn $user ? $user['name'] : null;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<li>\n<p><strong>\u4fdd\u6301\u7b80\u6d01\uff1a<\/strong> \u81ea\u51fd\u6570\u5e94\u7b80\u6d01\u4e14\u6613\u4e8e\u7406\u89e3\u3002\u907f\u514d\u5c06\u591a\u4e2a\u64cd\u4f5c\u7ec4\u5408\u5230\u4e00\u4e2a\u81ea\u51fd\u6570\u4e2d\uff0c\u5e76\u8003\u8651\u5c06\u590d\u6742\u7684\u903b\u8f91\u5c01\u88c5\u5230\u5176\u4ed6\u51fd\u6570\u6216\u7c7b\u4e2d\u3002<\/p>\n<pre>\/\/ \u907f\u514d\uff1a\nfunction doStuffAndMore() { ... }\n\n\/\/ \u66f4\u4f73\uff1a\nfunction doStuff() { ... }\nfunction doMore() { ... }<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<li>\n<p><strong>\u907f\u514d\u526f\u4f5c\u7528\uff1a<\/strong> \u81ea\u51fd\u6570\u5e94\u662f\u7eaf\u51fd\u6570\uff0c\u5373\u4e0d\u4fee\u6539\u5168\u5c40\u72b6\u6001\u6216\u5916\u90e8\u53d8\u91cf\u3002\u8fd9\u6709\u52a9\u4e8e\u63d0\u9ad8\u53ef\u9884\u6d4b\u6027\u548c\u53ef\u6d4b\u8bd5\u6027\u3002<\/p>\n<pre>function calculateTotal(array $items) {\n$total = 0;\nforeach ($items as $item) {\n  $total += $item['price'];\n}\nreturn $total;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<li> <strong>\u6d4b\u8bd5\u81ea\u51fd\u6570\uff1a<\/strong> \u7f16\u5199\u5355\u5143\u6d4b\u8bd5\u6765\u9a8c\u8bc1\u81ea\u51fd\u6570\u7684\u884c\u4e3a\uff0c\u786e\u4fdd\u5b83\u4eec\u6309\u9884\u671f\u8fd0\u884c\u3002\u8fd9\u6709\u52a9\u4e8e\u6355\u83b7\u9519\u8bef\u5e76\u63d0\u4f9b\u4ee3\u7801\u8986\u76d6\u7387\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p><strong>\u6848\u4f8b\uff1a\u8ba1\u7b97\u8ba2\u5355\u603b\u91d1\u989d<\/strong><\/p>\n<pre>function calculateTotalAmount(array $order): float {\n  $total = 0;\n  foreach ($order['items'] as $item) {\n    $total += $item['price'] * $item['quantity'];\n  }\n  return $total;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u4e2a\u81ea\u51fd\u6570\u63a5\u53d7\u4e00\u4e2a\u8ba2\u5355\u6570\u7ec4\uff0c\u8ba1\u7b97\u5e76\u8fd4\u56de\u8ba2\u5355\u7684\u603b\u91d1\u989d\u3002\u5b83\u7b26\u5408\u6700\u4f73\u5b9e\u8df5\uff0c\u56e0\u4e3a\u5b83\u5177\u6709\u63cf\u8ff0\u6027\u540d\u79f0\uff0c\u8f93\u5165\u7c7b\u578b\u63d0\u793a\uff0c\u5904\u7406\u7a7a\u503c\uff08\u5141\u8bb8\u7684\u8ba2\u5355\u9879\u4e3a\u7a7a\uff09\uff0c\u7b80\u6d01\uff0c\u5e76\u4e14\u6ca1\u6709\u526f\u4f5c\u7528\u3002<\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u9075\u5faa\u8fd9\u4e9b\u6700\u4f73\u5b9e\u8df5\u53ef\u4ee5\u7f16\u5199\u5e72\u51c0\u3001\u6709\u6548\u4e14\u53ef\u7ef4\u62a4\u7684 PHP \u81ea\u51fd\u6570\u3002\u901a\u8fc7\u4f7f\u7528\u63cf\u8ff0\u6027\u540d\u79f0\u3001\u58f0\u660e\u7c7b\u578b\u63d0\u793a\u3001\u5904\u7406\u7a7a\u503c\u3001\u4fdd\u6301\u7b80\u6d01\u3001\u907f\u514d\u526f\u4f5c\u7528\u548c\u6d4b\u8bd5\u81ea\u51fd\u6570\uff0c\u60a8\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u8d28\u91cf\uff0c\u5e76\u4f7f\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u66f4\u6613\u4e8e\u7406\u89e3\u548c\u7ef4\u62a4\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fPHP \u81ea\u51fd\u6570\u7f16\u5199\u4e2d\u7684\u6700\u4f73\u5b9e\u8df5\u5206\u4eab\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>php \u81ea\u51fd\u6570\u7f16\u5199\u6700\u4f73\u5b9e\u8df5\uff1a\u4f7f\u7528\u63cf\u8ff0\u6027\u540d\u79f0\uff1a\u6e05\u6670\u51c6\u786e\u5730\u53cd\u6620\u81ea\u51fd\u6570\u529f\u80fd\u3002\u58f0\u660e\u8f93\u5165\u548c\u8f93\u51fa\u7c7b\u578b\u63d0\u793a\uff1a\u589e\u5f3a\u7c7b\u578b\u5b89\u5168\u6027\u5e76\u63d0\u4f9b\u6587\u6863\u3002\u5904\u7406\u7a7a\u503c\uff1a\u4f7f\u7528 null \u68c0\u67e5\u6216\u9ed8\u8ba4\u503c\u6765\u5904\u7406\u7a7a\u503c\u3002\u4fdd\u6301\u7b80\u6d01\uff1a\u907f\u514d\u5c06\u591a\u4e2a\u64cd\u4f5c\u7ec4\u5408\u5230\u4e00\u4e2a\u81ea\u51fd\u6570\u4e2d\u3002\u907f\u514d\u526f\u4f5c\u7528\uff1a\u7f16\u5199\u7eaf\u51fd\u6570\uff0c\u4e0d\u4fee\u6539\u5168\u5c40\u72b6\u6001\u6216\u5916\u90e8\u53d8\u91cf\u3002\u6d4b\u8bd5\u81ea\u51fd\u6570\uff1a\u4f7f\u7528\u5355\u5143\u6d4b\u8bd5\u6765\u9a8c\u8bc1\u81ea\u51fd\u6570\u884c\u4e3a\u3002 PHP \u81ea\u51fd\u6570\u7f16\u5199\u6700\u4f73\u5b9e\u8df5 \u524d\u8a00 \u81ea\u51fd\u6570\u662f PHP \u4e2d\u4e00\u79cd\u7b80\u6d01\u6709\u6548\u7684\u7f16\u7801\u673a\u5236\uff0c\u80fd\u591f\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u4e3a\u4e86\u7f16\u5199\u5e72\u51c0\u3001\u6709\u6548\u7684\u81ea\u51fd\u6570\uff0c\u9075\u5faa\u6700\u4f73\u5b9e\u8df5\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u5c06\u63a2\u8ba8 PHP \u81ea\u51fd\u6570\u7f16\u5199\u7684\u6700\u4f73\u5b9e\u8df5\uff0c\u5e76\u63d0\u4f9b\u5b9e\u9645\u6848\u4f8b\u3002 \u7acb\u5373\u5b66\u4e60\u201cPHP\u514d\u8d39\u5b66\u4e60\u7b14\u8bb0\uff08\u6df1\u5165\uff09\u201d\uff1b \u6700\u4f73\u5b9e\u8df5 \u4f7f\u7528\u63cf\u8ff0\u6027\u540d\u79f0\uff1a \u81ea\u51fd\u6570\u7684\u540d\u79f0\u5e94\u6e05\u6670\u7b80\u6d01\uff0c\u51c6\u786e\u53cd\u6620\u5176\u529f\u80fd\u3002\u907f\u514d\u4f7f\u7528\u542b\u7cca\u6216\u901a\u7528\u7684\u540d\u79f0\u3002 \/\/ \u907f\u514d\uff1a function doStuff() { &#8230; } \/\/ \u66f4\u4f73\uff1a function calculateTotalAmount() { &#8230; } 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