{"id":25257,"date":"2024-11-21T09:52:58","date_gmt":"2024-11-21T01:52:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/25257\/"},"modified":"2024-11-21T09:52:58","modified_gmt":"2024-11-21T01:52:58","slug":"laravel%e4%b8%adtake%e5%92%8climit%e7%9a%84%e5%bc%82%e5%90%8c%e7%82%b9%e5%8f%8a%e4%bd%bf%e7%94%a8%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/25257\/","title":{"rendered":"Laravel\u4e2dtake\u548climit\u7684\u5f02\u540c\u70b9\u53ca\u4f7f\u7528\u6280\u5de7"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/887\/227\/171013518550764.jpg\" class=\"aligncenter\" title=\"Laravel\u4e2dtake\u548climit\u7684\u5f02\u540c\u70b9\u53ca\u4f7f\u7528\u6280\u5de7\u63d2\u56fe\" alt=\"Laravel\u4e2dtake\u548climit\u7684\u5f02\u540c\u70b9\u53ca\u4f7f\u7528\u6280\u5de7\u63d2\u56fe\" \/><\/p>\n<p>Laravel\u4e2dtake\u548climit\u7684\u5f02\u540c\u70b9\u53ca\u4f7f\u7528\u6280\u5de7<\/p>\n<p>\u5728Laravel\u8fd9\u4e2a\u6d41\u884c\u7684PHP\u6846\u67b6\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u9700\u8981\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u67e5\u8be2\u5e76\u9650\u5236\u8fd4\u56de\u7ed3\u679c\u6570\u91cf\u7684\u60c5\u51b5\u3002take()\u548climit()\u662f\u4e24\u4e2a\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u5b83\u4eec\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\u867d\u7136\u529f\u80fd\u76f8\u4f3c\uff0c\u4f46\u4e5f\u5b58\u5728\u4e00\u4e9b\u4e0d\u540c\u4e4b\u5904\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u7684\u5f02\u540c\u70b9\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u4f7f\u7528\u6280\u5de7\u548c\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p><strong>1. take()\u548climit()\u7684\u529f\u80fd<\/strong><\/p>\n<p>\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0btake()\u548climit()\u65b9\u6cd5\u5404\u81ea\u7684\u529f\u80fd\uff1a<\/p>\n<ul>\n<li>take()\u65b9\u6cd5\u7528\u4e8e\u6307\u5b9a\u4ece\u6570\u636e\u5e93\u4e2d\u53d6\u51fa\u7684\u8bb0\u5f55\u6570\u91cf\u3002\u5b83\u662fLaravel\u4e2d\u67e5\u8be2\u6784\u9020\u5668\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u53ef\u4ee5\u4e0e\u5176\u4ed6\u67e5\u8be2\u6761\u4ef6\u94fe\u5f0f\u8c03\u7528\u3002<\/li>\n<li>limit()\u65b9\u6cd5\u5219\u662fSQL\u4e2d\u7684\u5173\u952e\u5b57\uff0c\u7528\u4e8e\u9650\u5236\u8fd4\u56de\u7684\u8bb0\u5f55\u6570\u91cf\u3002\u5728Laravel\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528DB facade\u6216Eloquent\u6a21\u578b\u6765\u8c03\u7528limit()\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<p><strong>2. take()\u548climit()\u7684\u5f02\u540c\u70b9<\/strong><\/p>\n<p>\u5c3d\u7ba1take()\u548climit()\u90fd\u53ef\u4ee5\u7528\u6765\u9650\u5236\u8fd4\u56de\u7ed3\u679c\u7684\u6570\u91cf\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u8fd8\u662f\u5b58\u5728\u4e00\u4e9b\u4e0d\u540c\u4e4b\u5904\uff1a<\/p>\n<ul>\n<li>take()\u65b9\u6cd5\u662fLaravel\u6846\u67b6\u63d0\u4f9b\u7684\u67e5\u8be2\u6784\u9020\u5668\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4e0e\u5176\u4ed6\u67e5\u8be2\u6761\u4ef6\u4e00\u8d77\u94fe\u5f0f\u8c03\u7528\uff0c\u7075\u6d3b\u6027\u8f83\u9ad8\u3002<\/li>\n<li>limit()\u65b9\u6cd5\u662fSQL\u8bed\u53e5\u4e2d\u7684\u5173\u952e\u5b57\uff0c\u5728Laravel\u4e2d\u4e5f\u53ef\u4ee5\u4f7f\u7528\uff0c\u4f46\u76f8\u5bf9\u6765\u8bf4\u4e0d\u592a\u7075\u6d3b\uff0c\u9700\u8981\u5728SQL\u8bed\u53e5\u4e2d\u76f4\u63a5\u5b9a\u4e49\u9650\u5236\u6570\u91cf\u3002<\/li>\n<\/ul>\n<p>\u53e6\u5916\uff0c\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u5f53\u4f7f\u7528Eloquent\u6a21\u578b\u8fdb\u884c\u67e5\u8be2\u65f6\uff0c\u6211\u4eec\u66f4\u503e\u5411\u4e8e\u4f7f\u7528take()\u65b9\u6cd5\u6765\u9650\u5236\u8fd4\u56de\u6570\u91cf\uff0c\u56e0\u4e3a\u5b83\u4e0e\u5176\u4ed6Eloquent\u67e5\u8be2\u65b9\u6cd5\u66f4\u52a0\u7edf\u4e00\u548c\u8bed\u4e49\u5316\u3002<\/p>\n<p><strong>3. take()\u548climit()\u7684\u4f7f\u7528\u6280\u5de7<\/strong><\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u6765\u770b\u4e00\u4e9b\u4f7f\u7528take()\u548climit()\u7684\u6280\u5de7\uff0c\u4ee5\u53ca\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li>\n<p>\u4f7f\u7528take()\u65b9\u6cd5\u8fd4\u56de\u6307\u5b9a\u6570\u91cf\u7684\u8bb0\u5f55\uff1a<\/p>\n<pre>$users = User::take(5)-&amp;gt;get();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/li>\n<li>\n<p>\u4f7f\u7528limit()\u65b9\u6cd5\u7ed3\u5408offset()\u8fdb\u884c\u5206\u9875\u67e5\u8be2\uff1a<\/p>\n<pre>$posts = DB::table('posts')-&amp;gt;limit(10)-&amp;gt;offset(20)-&amp;gt;get();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/li>\n<li>\n<p>\u7ed3\u5408where\u6761\u4ef6\u4f7f\u7528take()\u65b9\u6cd5\uff1a<\/p>\n<pre>$active_users = User::where('status', 'active')-&amp;gt;take(10)-&amp;gt;get();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/li>\n<li>\n<p>\u9650\u5236\u5173\u8054\u5173\u7cfb\u7684\u8bb0\u5f55\u6570\u91cf\uff1a<\/p>\n<pre>$posts = User::find(1)-&amp;gt;posts()-&amp;gt;take(3)-&amp;gt;get();<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/li>\n<\/ul>\n<p><strong>\u603b\u7ed3<\/strong><\/p>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u6df1\u5165\u63a2\u8ba8\u4e86Laravel\u4e2dtake()\u548climit()\u65b9\u6cd5\u7684\u5f02\u540c\u70b9\u53ca\u4f7f\u7528\u6280\u5de7\u3002\u65e0\u8bba\u662f\u4f7f\u7528take()\u8fd8\u662flimit()\uff0c\u90fd\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u66f4\u7075\u6d3b\u5730\u63a7\u5236\u67e5\u8be2\u7ed3\u679c\u7684\u6570\u91cf\uff0c\u4ece\u800c\u4f18\u5316\u6570\u636e\u5e93\u67e5\u8be2\u7684\u6027\u80fd\u3002\u5728\u5b9e\u9645\u9879\u76ee\u5f00\u53d1\u4e2d\uff0c\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u5927\u5bb6\u5728\u4f7f\u7528Laravel\u8fdb\u884c\u5f00\u53d1\u65f6\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fLaravel\u4e2dtake\u548climit\u7684\u5f02\u540c\u70b9\u53ca\u4f7f\u7528\u6280\u5de7\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>Laravel\u4e2dtake\u548climit\u7684\u5f02\u540c\u70b9\u53ca\u4f7f\u7528\u6280\u5de7 \u5728Laravel\u8fd9\u4e2a\u6d41\u884c\u7684PHP\u6846\u67b6\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u9700\u8981\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u67e5\u8be2\u5e76\u9650\u5236\u8fd4\u56de\u7ed3\u679c\u6570\u91cf\u7684\u60c5\u51b5\u3002take()\u548climit()\u662f\u4e24\u4e2a\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u5b83\u4eec\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\u867d\u7136\u529f\u80fd\u76f8\u4f3c\uff0c\u4f46\u4e5f\u5b58\u5728\u4e00\u4e9b\u4e0d\u540c\u4e4b\u5904\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u7684\u5f02\u540c\u70b9\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u4f7f\u7528\u6280\u5de7\u548c\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002 1. take()\u548climit()\u7684\u529f\u80fd \u9996\u5148\uff0c\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0btake()\u548climit()\u65b9\u6cd5\u5404\u81ea\u7684\u529f\u80fd\uff1a take()\u65b9\u6cd5\u7528\u4e8e\u6307\u5b9a\u4ece\u6570\u636e\u5e93\u4e2d\u53d6\u51fa\u7684\u8bb0\u5f55\u6570\u91cf\u3002\u5b83\u662fLaravel\u4e2d\u67e5\u8be2\u6784\u9020\u5668\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u53ef\u4ee5\u4e0e\u5176\u4ed6\u67e5\u8be2\u6761\u4ef6\u94fe\u5f0f\u8c03\u7528\u3002 limit()\u65b9\u6cd5\u5219\u662fSQL\u4e2d\u7684\u5173\u952e\u5b57\uff0c\u7528\u4e8e\u9650\u5236\u8fd4\u56de\u7684\u8bb0\u5f55\u6570\u91cf\u3002\u5728Laravel\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528DB facade\u6216Eloquent\u6a21\u578b\u6765\u8c03\u7528limit()\u65b9\u6cd5\u3002 2. take()\u548climit()\u7684\u5f02\u540c\u70b9 \u5c3d\u7ba1take()\u548climit()\u90fd\u53ef\u4ee5\u7528\u6765\u9650\u5236\u8fd4\u56de\u7ed3\u679c\u7684\u6570\u91cf\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u8fd8\u662f\u5b58\u5728\u4e00\u4e9b\u4e0d\u540c\u4e4b\u5904\uff1a take()\u65b9\u6cd5\u662fLaravel\u6846\u67b6\u63d0\u4f9b\u7684\u67e5\u8be2\u6784\u9020\u5668\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4e0e\u5176\u4ed6\u67e5\u8be2\u6761\u4ef6\u4e00\u8d77\u94fe\u5f0f\u8c03\u7528\uff0c\u7075\u6d3b\u6027\u8f83\u9ad8\u3002 limit()\u65b9\u6cd5\u662fSQL\u8bed\u53e5\u4e2d\u7684\u5173\u952e\u5b57\uff0c\u5728Laravel\u4e2d\u4e5f\u53ef\u4ee5\u4f7f\u7528\uff0c\u4f46\u76f8\u5bf9\u6765\u8bf4\u4e0d\u592a\u7075\u6d3b\uff0c\u9700\u8981\u5728SQL\u8bed\u53e5\u4e2d\u76f4\u63a5\u5b9a\u4e49\u9650\u5236\u6570\u91cf\u3002 \u53e6\u5916\uff0c\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u5f53\u4f7f\u7528Eloquent\u6a21\u578b\u8fdb\u884c\u67e5\u8be2\u65f6\uff0c\u6211\u4eec\u66f4\u503e\u5411\u4e8e\u4f7f\u7528take()\u65b9\u6cd5\u6765\u9650\u5236\u8fd4\u56de\u6570\u91cf\uff0c\u56e0\u4e3a\u5b83\u4e0e\u5176\u4ed6Eloquent\u67e5\u8be2\u65b9\u6cd5\u66f4\u52a0\u7edf\u4e00\u548c\u8bed\u4e49\u5316\u3002 3. take()\u548climit()\u7684\u4f7f\u7528\u6280\u5de7 \u4e0b\u9762\u6211\u4eec\u6765\u770b\u4e00\u4e9b\u4f7f\u7528take()\u548climit()\u7684\u6280\u5de7\uff0c\u4ee5\u53ca\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\uff1a \u4f7f\u7528take()\u65b9\u6cd5\u8fd4\u56de\u6307\u5b9a\u6570\u91cf\u7684\u8bb0\u5f55\uff1a $users = User::take(5)-&amp;gt;get(); \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528limit()\u65b9\u6cd5\u7ed3\u5408offset()\u8fdb\u884c\u5206\u9875\u67e5\u8be2\uff1a $posts = DB::table(&#8216;posts&#8217;)-&amp;gt;limit(10)-&amp;gt;offset(20)-&amp;gt;get(); \u767b\u5f55\u540e\u590d\u5236 \u7ed3\u5408where\u6761\u4ef6\u4f7f\u7528take()\u65b9\u6cd5\uff1a $active_users = User::where(&#8216;status&#8217;, &#8216;active&#8217;)-&amp;gt;take(10)-&amp;gt;get(); \u767b\u5f55\u540e\u590d\u5236 \u9650\u5236\u5173\u8054\u5173\u7cfb\u7684\u8bb0\u5f55\u6570\u91cf\uff1a $posts = User::find(1)-&amp;gt;posts()-&amp;gt;take(3)-&amp;gt;get(); \u767b\u5f55\u540e\u590d\u5236 \u603b\u7ed3 \u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u6df1\u5165\u63a2\u8ba8\u4e86Laravel\u4e2dtake()\u548climit()\u65b9\u6cd5\u7684\u5f02\u540c\u70b9\u53ca\u4f7f\u7528\u6280\u5de7\u3002\u65e0\u8bba\u662f\u4f7f\u7528take()\u8fd8\u662flimit()\uff0c\u90fd\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u66f4\u7075\u6d3b\u5730\u63a7\u5236\u67e5\u8be2\u7ed3\u679c\u7684\u6570\u91cf\uff0c\u4ece\u800c\u4f18\u5316\u6570\u636e\u5e93\u67e5\u8be2\u7684\u6027\u80fd\u3002\u5728\u5b9e\u9645\u9879\u76ee\u5f00\u53d1\u4e2d\uff0c\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u5927\u5bb6\u5728\u4f7f\u7528Laravel\u8fdb\u884c\u5f00\u53d1\u65f6\u6709\u6240\u5e2e\u52a9\u3002 \u4ee5\u4e0a\u5c31\u662fLaravel\u4e2dtake\u548climit\u7684\u5f02\u540c\u70b9\u53ca\u4f7f\u7528\u6280\u5de7\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/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-25257","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/25257","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=25257"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/25257\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=25257"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=25257"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=25257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}