{"id":22670,"date":"2024-11-21T13:02:01","date_gmt":"2024-11-21T05:02:01","guid":{"rendered":"https:\/\/fwq.ai\/blog\/22670\/"},"modified":"2024-11-21T13:02:01","modified_gmt":"2024-11-21T05:02:01","slug":"laravel%e6%9f%a5%e8%af%a2%e6%9d%a1%e6%95%b0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/22670\/","title":{"rendered":"laravel\u67e5\u8be2\u6761\u6570"},"content":{"rendered":"

laravel\u662f\u4e00\u79cd\u975e\u5e38\u6d41\u884c\u7684php\u6846\u67b6\uff0c\u5177\u6709\u7b80\u5355\u6613\u7528\u3001\u6269\u5c55\u6027\u597d\u7b49\u7279\u70b9\u3002\u5728\u4f7f\u7528laravel\u8fdb\u884c\u5f00\u53d1\u65f6\uff0c\u67e5\u8be2\u6570\u636e\u662f\u6700\u5e38\u7528\u7684\u529f\u80fd\u4e4b\u4e00\u3002\u800c\u67e5\u8be2\u6570\u636e\u4e2d\uff0c\u67e5\u8be2\u6761\u6570\u4e5f\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u64cd\u4f5c\u3002\u4e0b\u9762\u5c06\u4e3a\u5927\u5bb6\u4ecb\u7ecd\u5728laravel\u4e2d\u5982\u4f55\u8fdb\u884c\u67e5\u8be2\u6761\u6570\u7684\u76f8\u5173\u64cd\u4f5c\u3002<\/p>\n

\u67e5\u8be2\u6761\u6570\u7684\u65b9\u6cd5<\/p>\n

\u5728Laravel\u4e2d\uff0c\u67e5\u8be2\u6761\u6570\u7684\u65b9\u6cd5\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8981\u4f7f\u7528count()\u65b9\u6cd5\u5373\u53ef\u3002count()\u65b9\u6cd5\u63a5\u6536\u4e00\u4e2a\u53c2\u6570\uff0c\u5373\u9700\u8981\u67e5\u8be2\u6761\u6570\u7684\u5b57\u6bb5\u6216\u8005\u6574\u4e2a\u8868\u3002\u4ee5\u4e0b\u662fcount()\u65b9\u6cd5\u7684\u4f7f\u7528\u793a\u4f8b\uff1a<\/p>\n

$count = DB::table('table_name')-&gt;count(); \/\/\u67e5\u8be2\u8868\u4e2d\u603b\u5171\u6709\u591a\u5c11\u6761\u6570\u636e\n$count = DB::table('table_name')-&gt;where('condition', 'value')-&gt;count(); \/\/\u67e5\u8be2\u7b26\u5408\u6761\u4ef6\u7684\u6570\u636e\u6761\u6570<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c$count\u662f\u67e5\u8be2\u7ed3\u679c\u7684\u603b\u6761\u6570\u3002\u7b2c\u4e00\u884c\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528count()\u65b9\u6cd5\u67e5\u8be2\u4e86\u6574\u4e2a\u8868\u4e2d\u6570\u636e\u7684\u603b\u6761\u6570\u3002\u7b2c\u4e8c\u884c\u4ee3\u7801\u4e2d\uff0c\u5219\u662f\u67e5\u8be2\u7b26\u5408\u6761\u4ef6\u7684\u6570\u636e\u6761\u6570\u3002<\/p>\n
\u5982\u679c\u8981\u67e5\u8be2\u591a\u79cd\u6761\u4ef6\u7684\u6570\u636e\u6761\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u4e2awhere()\u65b9\u6cd5\u3002\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
$count = DB::table('table_name')\n        -&gt;where('condition_1', 'value_1')\n        -&gt;where('condition_2', 'value_2')\n        -&gt;count();<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528\u4e86\u4e24\u4e2awhere()\u65b9\u6cd5\uff0c\u5206\u522b\u67e5\u8be2\u4e86\u6761\u4ef61\u548c\u6761\u4ef62\u4e0b\u7684\u6570\u636e\u6761\u6570\u3002<\/p>\n
\u805a\u5408\u51fd\u6570\u7edf\u8ba1<\/p>\n
\u5728Laravel\u4e2d\uff0c\u8fd8\u6709\u4e00\u79cd\u66f4\u52a0\u9ad8\u7ea7\u7684\u67e5\u8be2\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u7528\u805a\u5408\u51fd\u6570\u6765\u5b9e\u73b0\u67e5\u8be2\u7edf\u8ba1\u3002\u5e38\u7528\u7684\u805a\u5408\u51fd\u6570\u6709SUM\u3001AVG\u3001MAX\u3001MIN\u548cCOUNT\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528SUM\u51fd\u6570\u67e5\u8be2\u6570\u636e\u603b\u91cf\u7684\u793a\u4f8b\uff1a<\/p>\n
$sum = DB::table('table_name')-&gt;sum('column_name');<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528sum()\u65b9\u6cd5\u67e5\u8be2\u4e86\u8868\u4e2d\u67d0\u4e2a\u5b57\u6bb5\u7684\u603b\u548c\u3002\u4f7f\u7528AVG\u3001MAX\u3001MIN\u51fd\u6570\u4e0esum()\u65b9\u6cd5\u7684\u4f7f\u7528\u65b9\u6cd5\u7c7b\u4f3c\u3002<\/p>\n
\u5f53\u7136\uff0c\u4f7f\u7528COUNT\u51fd\u6570\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u67e5\u8be2\u6761\u6570\u7684\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528COUNT\u51fd\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n
$count = DB::table('table_name')\n        -&gt;select(DB::raw('count(*) as count'))\n        -&gt;get()[0]-&gt;count;<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528select()\u65b9\u6cd5\u6307\u5b9a\u9700\u8981\u67e5\u8be2\u7684\u5b57\u6bb5\uff0c\u7136\u540e\u4f20\u5165COUNT(*)\u51fd\u6570\u4f5c\u4e3a\u67e5\u8be2\u6761\u4ef6\u3002\u7531\u4e8e\u67e5\u8be2\u7ed3\u679c\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u5bf9\u8c61\u6570\u7ec4\uff0c\u56e0\u6b64\u9700\u8981\u4f7f\u7528get()[0]\u83b7\u53d6\u7b2c\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5e76\u4f7f\u7528->count\u83b7\u53d6count\u5b57\u6bb5\u7684\u503c\u3002<\/p>\n
\u901a\u8fc7\u4f7f\u7528COUNT\u51fd\u6570\uff0c\u8fd8\u53ef\u4ee5\u5b9e\u73b0\u5206\u7ec4\u67e5\u8be2\u7edf\u8ba1\u7684\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528COUNT\u51fd\u6570\u8fdb\u884c\u5206\u7ec4\u67e5\u8be2\u7edf\u8ba1\u7684\u793a\u4f8b\uff1a<\/p>\n
$results = DB::table('table_name')\n        -&gt;select('category', DB::raw('count(*) as count'))\n        -&gt;groupBy('category')\n        -&gt;get();<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528groupBy()\u65b9\u6cd5\u5bf9category\u5b57\u6bb5\u8fdb\u884c\u5206\u7ec4\uff0c\u7136\u540e\u4f7f\u7528COUNT(*)\u51fd\u6570\u7edf\u8ba1\u6bcf\u4e2a\u5206\u7ec4\u7684\u6570\u636e\u6761\u6570\u3002\u67e5\u8be2\u7ed3\u679c\u5c06\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u6570\u7ec4\uff0c\u5305\u542b\u6bcf\u4e2a\u5206\u7ec4\u7684\u6570\u636e\u7edf\u8ba1\u7ed3\u679c\u3002<\/p>\n
\u603b\u7ed3<\/p>\n
\u5728Laravel\u6846\u67b6\u4e2d\uff0c\u67e5\u8be2\u6570\u636e\u4e2d\u67e5\u8be2\u6761\u6570\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u64cd\u4f5c\u3002\u901a\u8fc7\u4f7f\u7528count()\u65b9\u6cd5\u548c\u805a\u5408\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u5feb\u901f\u3001\u65b9\u4fbf\u5730\u8fdb\u884c\u6761\u6570\u67e5\u8be2\u548c\u7edf\u8ba1\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u9700\u8981\u6839\u636e\u4e0d\u540c\u7684\u4e1a\u52a1\u9700\u6c42\uff0c\u9009\u62e9\u4e0d\u540c\u7684\u67e5\u8be2\u65b9\u6cd5\u548c\u805a\u5408\u51fd\u6570\uff0c\u4ee5\u6ee1\u8db3\u5f00\u53d1\u7684\u8981\u6c42\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662flaravel\u67e5\u8be2\u6761\u6570\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\u975e\u5e38\u6d41\u884c\u7684php\u6846\u67b6\uff0c\u5177\u6709\u7b80\u5355\u6613\u7528\u3001\u6269\u5c55\u6027\u597d\u7b49\u7279\u70b9\u3002\u5728\u4f7f\u7528laravel\u8fdb\u884c\u5f00\u53d1\u65f6\uff0c\u67e5\u8be2\u6570\u636e\u662f\u6700\u5e38\u7528\u7684\u529f\u80fd\u4e4b\u4e00\u3002\u800c\u67e5\u8be2\u6570\u636e\u4e2d\uff0c\u67e5\u8be2\u6761\u6570\u4e5f\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u64cd\u4f5c\u3002\u4e0b\u9762\u5c06\u4e3a\u5927\u5bb6\u4ecb\u7ecd\u5728laravel\u4e2d\u5982\u4f55\u8fdb\u884c\u67e5\u8be2\u6761\u6570\u7684\u76f8\u5173\u64cd\u4f5c\u3002 \u67e5\u8be2\u6761\u6570\u7684\u65b9\u6cd5 \u5728Laravel\u4e2d\uff0c\u67e5\u8be2\u6761\u6570\u7684\u65b9\u6cd5\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8981\u4f7f\u7528count()\u65b9\u6cd5\u5373\u53ef\u3002count()\u65b9\u6cd5\u63a5\u6536\u4e00\u4e2a\u53c2\u6570\uff0c\u5373\u9700\u8981\u67e5\u8be2\u6761\u6570\u7684\u5b57\u6bb5\u6216\u8005\u6574\u4e2a\u8868\u3002\u4ee5\u4e0b\u662fcount()\u65b9\u6cd5\u7684\u4f7f\u7528\u793a\u4f8b\uff1a $count = DB::table(‘table_name’)-&gt;count(); \/\/\u67e5\u8be2\u8868\u4e2d\u603b\u5171\u6709\u591a\u5c11\u6761\u6570\u636e $count = DB::table(‘table_name’)-&gt;where(‘condition’, ‘value’)-&gt;count(); \/\/\u67e5\u8be2\u7b26\u5408\u6761\u4ef6\u7684\u6570\u636e\u6761\u6570 \u767b\u5f55\u540e\u590d\u5236 \u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c$count\u662f\u67e5\u8be2\u7ed3\u679c\u7684\u603b\u6761\u6570\u3002\u7b2c\u4e00\u884c\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528count()\u65b9\u6cd5\u67e5\u8be2\u4e86\u6574\u4e2a\u8868\u4e2d\u6570\u636e\u7684\u603b\u6761\u6570\u3002\u7b2c\u4e8c\u884c\u4ee3\u7801\u4e2d\uff0c\u5219\u662f\u67e5\u8be2\u7b26\u5408\u6761\u4ef6\u7684\u6570\u636e\u6761\u6570\u3002 \u5982\u679c\u8981\u67e5\u8be2\u591a\u79cd\u6761\u4ef6\u7684\u6570\u636e\u6761\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u4e2awhere()\u65b9\u6cd5\u3002\u5982\u4e0b\u6240\u793a\uff1a $count = DB::table(‘table_name’) -&gt;where(‘condition_1’, ‘value_1’) -&gt;where(‘condition_2’, ‘value_2’) -&gt;count(); \u767b\u5f55\u540e\u590d\u5236 \u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528\u4e86\u4e24\u4e2awhere()\u65b9\u6cd5\uff0c\u5206\u522b\u67e5\u8be2\u4e86\u6761\u4ef61\u548c\u6761\u4ef62\u4e0b\u7684\u6570\u636e\u6761\u6570\u3002 \u805a\u5408\u51fd\u6570\u7edf\u8ba1 \u5728Laravel\u4e2d\uff0c\u8fd8\u6709\u4e00\u79cd\u66f4\u52a0\u9ad8\u7ea7\u7684\u67e5\u8be2\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u7528\u805a\u5408\u51fd\u6570\u6765\u5b9e\u73b0\u67e5\u8be2\u7edf\u8ba1\u3002\u5e38\u7528\u7684\u805a\u5408\u51fd\u6570\u6709SUM\u3001AVG\u3001MAX\u3001MIN\u548cCOUNT\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528SUM\u51fd\u6570\u67e5\u8be2\u6570\u636e\u603b\u91cf\u7684\u793a\u4f8b\uff1a $sum = DB::table(‘table_name’)-&gt;sum(‘column_name’); \u767b\u5f55\u540e\u590d\u5236 \u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528sum()\u65b9\u6cd5\u67e5\u8be2\u4e86\u8868\u4e2d\u67d0\u4e2a\u5b57\u6bb5\u7684\u603b\u548c\u3002\u4f7f\u7528AVG\u3001MAX\u3001MIN\u51fd\u6570\u4e0esum()\u65b9\u6cd5\u7684\u4f7f\u7528\u65b9\u6cd5\u7c7b\u4f3c\u3002 \u5f53\u7136\uff0c\u4f7f\u7528COUNT\u51fd\u6570\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u67e5\u8be2\u6761\u6570\u7684\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528COUNT\u51fd\u6570\u7684\u793a\u4f8b\uff1a $count = DB::table(‘table_name’) -&gt;select(DB::raw(‘count(*) as count’)) -&gt;get()[0]-&gt;count; \u767b\u5f55\u540e\u590d\u5236 \u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528select()\u65b9\u6cd5\u6307\u5b9a\u9700\u8981\u67e5\u8be2\u7684\u5b57\u6bb5\uff0c\u7136\u540e\u4f20\u5165COUNT(*)\u51fd\u6570\u4f5c\u4e3a\u67e5\u8be2\u6761\u4ef6\u3002\u7531\u4e8e\u67e5\u8be2\u7ed3\u679c\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u5bf9\u8c61\u6570\u7ec4\uff0c\u56e0\u6b64\u9700\u8981\u4f7f\u7528get()[0]\u83b7\u53d6\u7b2c\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5e76\u4f7f\u7528->count\u83b7\u53d6count\u5b57\u6bb5\u7684\u503c\u3002 \u901a\u8fc7\u4f7f\u7528COUNT\u51fd\u6570\uff0c\u8fd8\u53ef\u4ee5\u5b9e\u73b0\u5206\u7ec4\u67e5\u8be2\u7edf\u8ba1\u7684\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528COUNT\u51fd\u6570\u8fdb\u884c\u5206\u7ec4\u67e5\u8be2\u7edf\u8ba1\u7684\u793a\u4f8b\uff1a $results = DB::table(‘table_name’) -&gt;select(‘category’, DB::raw(‘count(*) as count’)) -&gt;groupBy(‘category’) -&gt;get(); \u767b\u5f55\u540e\u590d\u5236 \u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528groupBy()\u65b9\u6cd5\u5bf9category\u5b57\u6bb5\u8fdb\u884c\u5206\u7ec4\uff0c\u7136\u540e\u4f7f\u7528COUNT(*)\u51fd\u6570\u7edf\u8ba1\u6bcf\u4e2a\u5206\u7ec4\u7684\u6570\u636e\u6761\u6570\u3002\u67e5\u8be2\u7ed3\u679c\u5c06\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u6570\u7ec4\uff0c\u5305\u542b\u6bcf\u4e2a\u5206\u7ec4\u7684\u6570\u636e\u7edf\u8ba1\u7ed3\u679c\u3002 \u603b\u7ed3 […]<\/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-22670","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/22670","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=22670"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/22670\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=22670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=22670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=22670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}