laravel \u662f\u4e00\u79cd\u6d41\u884c\u7684 php \u5f00\u53d1\u6846\u67b6\uff0c\u5b83\u5728\u5f00\u53d1 web \u5e94\u7528\u7a0b\u5e8f\u65f6\u63d0\u4f9b\u4e86\u5f88\u591a\u4fbf\u6377\u548c\u7075\u6d3b\u7684\u529f\u80fd\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u5728 laravel \u4e2d\u6c42\u548c\u7684\u51e0\u79cd\u65b9\u6cd5\u3002<\/p>\n
\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528 Query Builder<\/p>\n
Laravel \u7684 Query Builder \u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u636e\u5e93\u67e5\u8be2\u5de5\u5177\uff0c\u5b83\u63d0\u4f9b\u4e86\u5f88\u591a\u65b9\u4fbf\u7684\u65b9\u6cd5\uff0c\u5305\u62ec\u805a\u5408\u51fd\u6570\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Laravel \u7684 Query Builder \u5feb\u901f\u7684\u5bf9\u6570\u636e\u5e93\u6570\u636e\u8fdb\u884c\u6c42\u548c\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a<\/p>\n
$total = DB::table('orders')->sum('price');<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7 DB::table() \u65b9\u6cd5\u6307\u5b9a\u4e86\u8981\u67e5\u8be2\u7684\u6570\u636e\u8868\uff0c\u7136\u540e\u4f7f\u7528 sum() \u65b9\u6cd5\u5bf9\u4ef7\u683c\u8fdb\u884c\u6c42\u548c\u3002\u6700\u540e\uff0c\u5c06\u6c42\u548c\u7ed3\u679c\u8d4b\u503c\u7ed9\u53d8\u91cf $total\u3002<\/p>\n
\u65b9\u6cd5\u4e8c\uff1a\u4f7f\u7528 Model<\/p>\n
\u9664\u4e86\u4f7f\u7528 Query Builder\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7 Model \u7c7b\u6765\u8fdb\u884c\u6570\u636e\u67e5\u8be2\u548c\u64cd\u4f5c\u3002\u5728 Laravel \u4e2d\uff0c\u6bcf\u5f20\u6570\u636e\u8868\u901a\u5e38\u90fd\u4f1a\u5bf9\u5e94\u4e00\u4e2a Model \u7c7b\uff0c\u5e76\u4e14\u8be5\u7c7b\u4e2d\u5df2\u7ecf\u9ed8\u8ba4\u5305\u542b\u4e86\u4e00\u4e9b\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u5982 find()\u3001all()\u3001where() \u7b49\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528 Model \u6765\u6c42\u548c\u7684\u793a\u4f8b\uff1a<\/p>\n
\u5728\u5bf9\u5e94\u7684 Model \u7c7b\u4e2d\uff0c\u6211\u4eec\u6dfb\u52a0\u4e00\u4e2a getTotalPrice() \u65b9\u6cd5\uff0c\u7528\u6765\u67e5\u8be2 orders \u8868\u4e2d\u7684\u4ef7\u683c\u603b\u548c\uff1a<\/p>\n
public function getTotalPrice()\n{\n return $this->sum('price');\n}<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u7136\u540e\uff0c\u5728\u6211\u4eec\u7684\u63a7\u5236\u5668\u4e2d\uff0c\u5c31\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u8c03\u7528\u8be5\u65b9\u6cd5\uff1a<\/p>\n
$total = Order::getTotalPrice();<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0cOrder \u662f\u6211\u4eec\u7684 Model \u7c7b\u540d\uff0c\u901a\u8fc7 getTotalPrice() \u65b9\u6cd5\u6c42\u51fa\u4e86 orders \u8868\u4e2d\u7684\u4ef7\u683c\u603b\u548c\uff0c\u5e76\u8d4b\u503c\u7ed9\u53d8\u91cf $total\u3002<\/p>\n
\u65b9\u6cd5\u4e09\uff1a\u4f7f\u7528 raw SQL<\/p>\n
\u867d\u7136 Query Builder \u548c Model \u90fd\u63d0\u4f9b\u4e86\u5f88\u65b9\u4fbf\u7075\u6d3b\u7684\u6570\u636e\u64cd\u4f5c\u65b9\u6cd5\uff0c\u4f46\u5728\u67d0\u4e9b\u7279\u6b8a\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u53ef\u80fd\u4f1a\u9700\u8981\u4f7f\u7528\u539f\u59cb SQL \u8bed\u53e5\u6765\u5b8c\u6210\u6570\u636e\u64cd\u4f5c\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528 raw SQL \u6765\u6c42\u548c\u7684\u793a\u4f8b\uff1a<\/p>\n
$total = DB::select(\"SELECT SUM(price) FROM orders\")[0]->total;<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u539f\u751f\u7684 SQL \u8bed\u53e5\uff0c\u5bf9 orders \u8868\u4e2d\u7684\u4ef7\u683c\u8fdb\u884c\u4e86\u6c42\u548c\u3002\u7136\u540e\u4f7f\u7528 Laravel \u7684 DB \u7c7b\u6765\u6267\u884c\u8be5 SQL \u8bed\u53e5\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728\u53d8\u91cf $total \u4e2d\u3002<\/p>\n
\u603b\u7ed3<\/p>\n
\u5728 Laravel \u4e2d\u6c42\u548c\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5404\u81ea\u7684\u4f18\u7f3a\u70b9\u3002\u4f7f\u7528 Query Builder \u548c Model \u7b49\u65b9\u6cd5\u53ef\u4ee5\u6781\u5927\u5730\u7b80\u5316\u4ee3\u7801\uff0c\u540c\u65f6\u4e5f\u66f4\u65b9\u4fbf\u53ef\u63a7\u3002\u800c\u4f7f\u7528 raw SQL \u5219\u53ef\u4ee5\u8ba9\u5f00\u53d1\u8005\u83b7\u5f97\u66f4\u9ad8\u7684\u81ea\u7531\u5ea6\u548c\u7075\u6d3b\u6027\u3002 \u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u5e94\u8be5\u6839\u636e\u5177\u4f53\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u5b8c\u6210\u76f8\u5e94\u7684\u6c42\u548c\u64cd\u4f5c\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662flaravel\u5982\u4f55\u6c42\u548c\uff1f\u4e09\u79cd\u65b9\u6cd5\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":"
laravel \u662f\u4e00\u79cd\u6d41\u884c\u7684 php \u5f00\u53d1\u6846\u67b6\uff0c\u5b83\u5728\u5f00\u53d1 web \u5e94\u7528\u7a0b\u5e8f\u65f6\u63d0\u4f9b\u4e86\u5f88\u591a\u4fbf\u6377\u548c\u7075\u6d3b\u7684\u529f\u80fd\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u5728 laravel \u4e2d\u6c42\u548c\u7684\u51e0\u79cd\u65b9\u6cd5\u3002 \u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528 Query Builder Laravel \u7684 Query Builder \u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u636e\u5e93\u67e5\u8be2\u5de5\u5177\uff0c\u5b83\u63d0\u4f9b\u4e86\u5f88\u591a\u65b9\u4fbf\u7684\u65b9\u6cd5\uff0c\u5305\u62ec\u805a\u5408\u51fd\u6570\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Laravel \u7684 Query Builder \u5feb\u901f\u7684\u5bf9\u6570\u636e\u5e93\u6570\u636e\u8fdb\u884c\u6c42\u548c\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a $total = DB::table(‘orders’)->sum(‘price’); \u767b\u5f55\u540e\u590d\u5236 \u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7 DB::table() \u65b9\u6cd5\u6307\u5b9a\u4e86\u8981\u67e5\u8be2\u7684\u6570\u636e\u8868\uff0c\u7136\u540e\u4f7f\u7528 sum() \u65b9\u6cd5\u5bf9\u4ef7\u683c\u8fdb\u884c\u6c42\u548c\u3002\u6700\u540e\uff0c\u5c06\u6c42\u548c\u7ed3\u679c\u8d4b\u503c\u7ed9\u53d8\u91cf $total\u3002 \u65b9\u6cd5\u4e8c\uff1a\u4f7f\u7528 Model \u9664\u4e86\u4f7f\u7528 Query Builder\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7 Model \u7c7b\u6765\u8fdb\u884c\u6570\u636e\u67e5\u8be2\u548c\u64cd\u4f5c\u3002\u5728 Laravel \u4e2d\uff0c\u6bcf\u5f20\u6570\u636e\u8868\u901a\u5e38\u90fd\u4f1a\u5bf9\u5e94\u4e00\u4e2a Model \u7c7b\uff0c\u5e76\u4e14\u8be5\u7c7b\u4e2d\u5df2\u7ecf\u9ed8\u8ba4\u5305\u542b\u4e86\u4e00\u4e9b\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u5982 find()\u3001all()\u3001where() \u7b49\u3002 \u4ee5\u4e0b\u662f\u4f7f\u7528 Model \u6765\u6c42\u548c\u7684\u793a\u4f8b\uff1a \u5728\u5bf9\u5e94\u7684 Model \u7c7b\u4e2d\uff0c\u6211\u4eec\u6dfb\u52a0\u4e00\u4e2a getTotalPrice() \u65b9\u6cd5\uff0c\u7528\u6765\u67e5\u8be2 orders \u8868\u4e2d\u7684\u4ef7\u683c\u603b\u548c\uff1a public […]<\/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-22549","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/22549","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=22549"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/22549\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=22549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=22549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=22549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}