{"id":200567,"date":"2025-05-06T09:00:43","date_gmt":"2025-05-06T01:00:43","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200567\/"},"modified":"2025-05-06T09:00:43","modified_gmt":"2025-05-06T01:00:43","slug":"php-%e4%b8%8e-mysql-%e8%af%bb%e5%8f%96%e6%94%b6%e8%97%8f%e5%86%85%e5%ae%b9%ef%bc%9a%e4%bd%bf%e7%94%a8%e5%be%aa%e7%8e%af%e8%af%bb%e5%8f%96%e8%bf%98%e6%98%af%e5%90%88%e5%b9%b6%e6%95%b0%e7%bb%84%e6%9f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200567\/","title":{"rendered":"PHP \u4e0e MySQL \u8bfb\u53d6\u6536\u85cf\u5185\u5bb9\uff1a\u4f7f\u7528\u5faa\u73af\u8bfb\u53d6\u8fd8\u662f\u5408\u5e76\u6570\u7ec4\u67e5\u8be2\u66f4\u4f18\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

PHP \u4e0e MySQL \u8bfb\u53d6\u6536\u85cf\u5185\u5bb9\uff1a\u4f7f\u7528\u5faa\u73af\u8bfb\u53d6\u8fd8\u662f\u5408\u5e76\u6570\u7ec4\u67e5\u8be2\u66f4\u4f18\uff1f<\/h1>\n<\/p>\n

<\/p>\n

php \u4e0e mysql \u8bfb\u53d6\u6536\u85cf\u5185\u5bb9<\/strong><\/p>\n

\u7f51\u7ad9\u4e2d\u96c6\u6210\u4e86\u7528\u6237\u6536\u85cf\u529f\u80fd\uff0c\u6d89\u53ca\u5230\u4e09\u4e2a\u6570\u636e\u8868\uff1afavorites\uff08\u6536\u85cf\u6570\u636e\uff09\u3001goods\uff08\u5546\u54c1\uff09\u548c articles\uff08\u6587\u7ae0\uff09\u3002<\/p>\n

\u4e3a\u4e86\u5b9e\u73b0\u5bf9\u6536\u85cf\u5185\u5bb9\u7684\u8bfb\u53d6\uff0c\u53ef\u4ee5\u5148\u6309\u7167 dateline \u5012\u5e8f\u67e5\u8be2\u6536\u85cf\u6570\u636e\u8868\uff1a”select * from favorites order by dateline desc”\u3002\u63a5\u4e0b\u6765\uff0c\u901a\u8fc7\u83b7\u53d6 cid\uff08\u6536\u85cf\u7684\u6587\u7ae0\u6216\u5546\u54c1 id\uff09\u6765\u8bfb\u53d6\u76f8\u5e94\u7684\u6807\u9898\u3002<\/p>\n

\u6709\u4e24\u79cd\u65b9\u6cd5\u53ef\u4ee5\u83b7\u53d6\u6807\u9898\uff1a<\/p>\n

\u65b9\u6cd5 1\uff1a\u5faa\u73af\u8bfb\u53d6<\/strong><\/p>\n

\u4f7f\u7528 foreach \u5faa\u73af\u904d\u5386\u6bcf\u4e2a\u6536\u85cf\u6570\u636e\uff0c\u6839\u636e type \u5224\u65ad\u662f\u5546\u54c1\u8fd8\u662f\u6587\u7ae0\uff0c\u5e76\u5206\u522b\u8fdb\u884c\u6570\u636e\u5e93\u67e5\u8be2\u3002<\/p>\n

if($type==1){\n    select * from goods where id = $value['cid'];\n}<\/pre>\n
\u65b9\u6cd5 2\uff1a\u5408\u5e76\u6570\u7ec4\u540e\u8bfb\u53d6<\/strong><\/p>\n
\u5c06\u6240\u6709\u5546\u54c1 cid \u548c\u6587\u7ae0 cid \u5206\u522b\u653e\u5165\u4e24\u4e2a\u6570\u7ec4\u4e2d\uff0c\u7136\u540e\u4f7f\u7528 in \u67e5\u8be2\u540c\u65f6\u8bfb\u53d6\u6240\u6709\u6807\u9898\u3002<\/p>\n
select * from goods where id in($array_goods);\nselect * from articles where id in($array_articles);<\/pre>\n
\u7136\u800c\uff0c\u7b2c\u4e8c\u79cd\u65b9\u6cd5\u9700\u8981\u624b\u52a8\u5c06\u6807\u9898\u7ec4\u5408\u8d77\u6765\uff0c\u5e76\u6839\u636e dateline \u6392\u5e8f\uff0c\u800c\u4f7f\u7528\u7b2c\u4e00\u79cd\u65b9\u6cd5\u4e0d\u9700\u8981\u989d\u5916\u7684\u5904\u7406\u3002\u56e0\u6b64\uff0c\u5982\u679c\u5355\u6b21\u8981\u67e5\u8be2\u7684\u6570\u636e\u91cf\u4e0d\u5927\uff0c\u63a8\u8350\u4f7f\u7528\u7b2c\u4e00\u79cd\u65b9\u6cd5\u3002<\/p>\n
\u53e6\u5916\uff0c\u8fd8\u53ef\u4ee5\u8003\u8651\u91c7\u7528\u8054\u8868\u67e5\u8be2\uff0c\u5e76\u4f7f\u7528 if \u51fd\u6570\u533a\u5206\u5546\u54c1\u548c\u6587\u7ae0\u6807\u9898\u3002<\/p>\n
SELECT IF(goods.id IS NULL, articles.title, goods.title), favorites.*\nFROM favorites\nLEFT JOIN goods\n    ON goods.id = favorites.cid AND favorites.type = 1\nLEFT JOIN articles\n    ON articles.id = favorites.cid AND favorites.type = 2\nORDER BY dateline DESC<\/pre>\n
\u672c\u7bc7\u5173\u4e8e\u300aPHP \u4e0e MySQL \u8bfb\u53d6\u6536\u85cf\u5185\u5bb9\uff1a\u4f7f\u7528\u5faa\u73af\u8bfb\u53d6\u8fd8\u662f\u5408\u5e76\u6570\u7ec4\u67e5\u8be2\u66f4\u4f18\uff1f\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6570\u636e\u5e93\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n
\n
\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
PHP \u4e0e MySQL \u8bfb\u53d6\u6536\u85cf...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200567","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200567","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200567"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200567\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200567"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200567"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200567"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}