{"id":23111,"date":"2024-11-21T13:12:53","date_gmt":"2024-11-21T05:12:53","guid":{"rendered":"https:\/\/fwq.ai\/blog\/23111\/"},"modified":"2024-11-21T13:12:53","modified_gmt":"2024-11-21T05:12:53","slug":"thinkphp%e6%80%8e%e4%b9%88%e5%a4%9a%e8%a1%a8%e6%9f%a5%e8%af%a2%e8%af%ad%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/23111\/","title":{"rendered":"thinkphp\u600e\u4e48\u591a\u8868\u67e5\u8be2\u8bed\u53e5"},"content":{"rendered":"

\u968f\u7740\u4e92\u8054\u7f51\u7684\u53d1\u5c55\uff0c\u8d8a\u6765\u8d8a\u591a\u7684\u5e94\u7528\u7a0b\u5e8f\u9700\u8981\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u591a\u8868\u67e5\u8be2\uff0c\u4ee5\u5b9e\u73b0\u590d\u6742\u529f\u80fd\u9700\u6c42\u3002thinkphp\u4f5c\u4e3a\u4e00\u6b3e\u5f00\u6e90\u7684php\u5f00\u53d1\u6846\u67b6\uff0c\u63d0\u4f9b\u4e86\u65b9\u4fbf\u5feb\u6377\u7684\u591a\u8868\u67e5\u8be2\u8bed\u53e5\uff0c\u672c\u6587\u5c06\u4e3a\u5927\u5bb6\u4ecb\u7ecdthinkphp\u4e2d\u591a\u8868\u67e5\u8be2\u7684\u5b9e\u73b0\u65b9\u6cd5\u3002<\/p>\n

\u4e00\u3001\u8fde\u8868\u67e5\u8be2<\/p>\n

\u8fde\u8868\u67e5\u8be2\u4e5f\u88ab\u79f0\u4e3a\u8054\u5408\u67e5\u8be2\u3002\u5f53\u4e00\u4e2a\u67e5\u8be2\u4ece\u591a\u5f20\u8868\u4e2d\u83b7\u53d6\u6570\u636e\u65f6\uff0c\u8fd9\u4e2a\u67e5\u8be2\u5c31\u8981\u7528\u5230\u8fde\u63a5\u6216\u8005\u8054\u5408\u67e5\u8be2\u3002\u5728thinkphp\u4e2d\u4f7f\u7528\u8fde\u8868\u67e5\u8be2\uff0c\u9700\u8981\u4f7f\u7528Db\u7c7b\u7684join()\u65b9\u6cd5\u3002<\/p>\n

join()\u65b9\u6cd5\u7684\u53c2\u6570\u5982\u4e0b\uff1a<\/p>\n

$table\uff1a\u8981\u8fde\u63a5\u7684\u8868\u540d<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

$join\uff1a\u8fde\u63a5\u6761\u4ef6<\/p>\n

$type\uff1a\u8fde\u63a5\u7c7b\u578b\uff08\u9ed8\u8ba4\u4e3a\u5de6\u8fde\u63a5\uff09<\/p>\n

\u4e3e\u4e2a\u4f8b\u5b50\uff1a\u5047\u5982\u6211\u4eec\u73b0\u5728\u9700\u8981\u4ece\u8868A\u4e2d\u83b7\u53d6name\u5b57\u6bb5\u548c\u4ece\u8868B\u4e2d\u83b7\u53d6status\u5b57\u6bb5\uff0c\u4ee5status\u5b57\u6bb5\u4e3a\u6761\u4ef6\u8fde\u63a5\u4e24\u5f20\u8868\u3002\u53ef\u4ee5\u8fd9\u6837\u5199\uff1a<\/p>\n

Db::name('A')-&gt;alias('a')\n     -&gt;join('B b','a.status=b.status')\n     -&gt;field('a.name,b.status')\n     -&gt;select();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86Db\u7c7b\u7684join()\u65b9\u6cd5\uff0c\u6307\u5b9a\u4e86\u8981\u8fde\u63a5\u7684\u8868B\u548c\u8fde\u63a5\u6761\u4ef6a.status=b.status\u3002\u6ce8\u610f\u5230\u8fd9\u91cc\u6211\u4eec\u7ed9\u8868A\u8bbe\u7f6e\u4e86\u522b\u540da\uff0c\u8fd9\u662f\u5f88\u91cd\u8981\u7684\uff0c\u56e0\u4e3a\u4ece\u8868B\u4e2d\u83b7\u53d6\u5b57\u6bb5status\u65f6\uff0c\u6211\u4eec\u9700\u8981\u901a\u8fc7\u8868\u522b\u540da\u6765\u6307\u660e\u83b7\u53d6\u54ea\u5f20\u8868\u7684status\u5b57\u6bb5\u3002\u6700\u540e\uff0c\u6211\u4eec\u901a\u8fc7field()\u65b9\u6cd5\u6307\u5b9a\u8981\u83b7\u53d6\u7684\u5b57\u6bb5\u3002<\/p>\n
\u4e8c\u3001\u591a\u8868\u5173\u8054\u67e5\u8be2<\/p>\n
\u591a\u8868\u5173\u8054\u67e5\u8be2\u662f\u6307\u5728\u67e5\u8be2\u8fc7\u7a0b\u4e2d\uff0c\u628a\u591a\u5f20\u8868\u7684\u6570\u636e\u8fdb\u884c\u6bd4\u8f83\uff0c\u4ee5\u67d0\u4e2a\u5b57\u6bb5\u6765\u5efa\u7acb\u5173\u8054\u6027\uff0c\u8fd9\u9700\u8981\u7528\u5230\u5173\u8054\u67e5\u8be2\u3002\u5728thinkphp\u4e2d\uff0c\u5173\u8054\u67e5\u8be2\u4e3b\u8981\u6709\u4ee5\u4e0b\u4e09\u79cd\u65b9\u5f0f\uff1ahasOne\u3001hasMany\u548cbelongsToMany\u3002<\/p>\n
1.hasOne\u5173\u8054\u67e5\u8be2<\/p>\n
hasOne\u7528\u4e8e\u4e00\u5bf9\u4e00\u5173\u8054\uff0c\u5728\u4e24\u5f20\u8868\u7684\u5173\u8054\u5b57\u6bb5\u4e0a\u8bbe\u5b9a\u5bf9\u5e94\u5173\u7cfb\uff0c\u53ef\u4ee5\u5c06\u4e24\u4e2a\u8868\u7684\u6570\u636e\u6309\u7167\u4e00\u5b9a\u7684\u89c4\u5219\u8fde\u63a5\u8d77\u6765\u3002\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n
class UserModel extends Model\n{\n    \/\/hasOne\u5173\u8054\u67e5\u8be2\n    public function order()\n    {\n        return $this-&gt;hasOne('OrderModel','user_id','id');\n    }\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86hasOne\u5173\u8054\u67e5\u8be2\uff0c\u5c06\u4e00\u4e2a\u7528\u6237\u5bf9\u5e94\u4e00\u4e2a\u8ba2\u5355\u7684\u60c5\u51b5\u67e5\u8be2\u51fa\u6765\u4e86\u3002$this\u4ee3\u8868\u5f53\u524d\u6a21\u578b\uff0c\u4e00\u822c\u90fd\u662fUserModel\uff0corder()\u65b9\u6cd5\u662f\u6211\u4eec\u81ea\u5b9a\u4e49\u7684\u65b9\u6cd5\u540d\uff0c\u8fd4\u56de\u503c\u4f7f\u7528\u4e86hasOne\u65b9\u6cd5\u8fdb\u884c\u5173\u8054\u67e5\u8be2\u3002\u5176\u4e2d\uff0c’OrderModel’\u6307\u4ee3\u6211\u4eec\u8981\u5173\u8054\u67e5\u8be2\u7684\u6a21\u578b\uff0c’user_id’\u3001’id’\u5206\u522b\u4ee3\u8868\u4e24\u4e2a\u6a21\u578b\u4e4b\u95f4\u7684\u5173\u8054\u5b57\u6bb5\u3002<\/p>\n
2.hasMany\u5173\u8054\u67e5\u8be2<\/p>\n
hasMany\u7528\u4e8e\u4e00\u5bf9\u591a\u5173\u8054\uff0c\u5728\u4e24\u5f20\u8868\u7684\u5173\u8054\u5b57\u6bb5\u4e0a\u8bbe\u5b9a\u5bf9\u5e94\u5173\u7cfb\uff0c\u53ef\u4ee5\u5c06\u4e00\u5f20\u8868\u548c\u591a\u5f20\u8868\u7684\u6570\u636e\u6309\u7167\u4e00\u5b9a\u7684\u89c4\u5219\u8fde\u63a5\u8d77\u6765\u3002\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n
class UserModel extends Model\n{\n    \/\/hasMany\u5173\u8054\u67e5\u8be2\n    public function order()\n    {\n        return $this-&gt;hasMany('OrderModel','user_id','id');\n    }\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86hasMany\u5173\u8054\u67e5\u8be2\uff0c\u5c06\u4e00\u4e2a\u7528\u6237\u5bf9\u5e94\u591a\u4e2a\u8ba2\u5355\u7684\u60c5\u51b5\u67e5\u8be2\u51fa\u6765\u4e86\u3002$this\u4ee3\u8868\u5f53\u524d\u6a21\u578b\uff0corder()\u65b9\u6cd5\u662f\u6211\u4eec\u81ea\u5b9a\u4e49\u7684\u65b9\u6cd5\u540d\uff0c\u8fd4\u56de\u503c\u4f7f\u7528\u4e86hasMany\u65b9\u6cd5\u8fdb\u884c\u5173\u8054\u67e5\u8be2\u3002\u5176\u4e2d\uff0c’OrderModel’\u6307\u4ee3\u6211\u4eec\u8981\u5173\u8054\u67e5\u8be2\u7684\u6a21\u578b\uff0c’user_id’\u3001’id’\u5206\u522b\u4ee3\u8868\u4e24\u4e2a\u6a21\u578b\u4e4b\u95f4\u7684\u5173\u8054\u5b57\u6bb5\u3002<\/p>\n
3.belongsToMany\u5173\u8054\u67e5\u8be2<\/p>\n
belongsToMany\u7528\u4e8e\u591a\u5bf9\u591a\u5173\u8054\uff0c\u5728\u4e2d\u95f4\u8868\u7684\u5173\u8054\u5b57\u6bb5\u4e0a\u8bbe\u5b9a\u5bf9\u5e94\u5173\u7cfb\uff0c\u53ef\u4ee5\u5c06\u591a\u4e2a\u8868\u7684\u6570\u636e\u6309\u7167\u4e00\u5b9a\u7684\u89c4\u5219\u8fde\u63a5\u8d77\u6765\u3002\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n
class UserModel extends Model\n{\n    \/\/belongsToMany\u5173\u8054\u67e5\u8be2\n    public function goods()\n    {\n        return $this-&gt;belongsToMany('GoodsModel','user_goods','goods_id','user_id');\n    }\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86belongsToMany\u5173\u8054\u67e5\u8be2\uff0c\u5c06\u591a\u4e2a\u7528\u6237\u5bf9\u5e94\u591a\u4e2a\u5546\u54c1\u7684\u60c5\u51b5\u67e5\u8be2\u51fa\u6765\u4e86\u3002$this\u4ee3\u8868\u5f53\u524d\u6a21\u578b\uff0cgoods()\u65b9\u6cd5\u662f\u6211\u4eec\u81ea\u5b9a\u4e49\u7684\u65b9\u6cd5\u540d\uff0c\u8fd4\u56de\u503c\u4f7f\u7528\u4e86belongsToMany\u65b9\u6cd5\u8fdb\u884c\u5173\u8054\u67e5\u8be2\u3002\u5176\u4e2d\uff0c’GoodsModel’\u6307\u4ee3\u6211\u4eec\u8981\u5173\u8054\u67e5\u8be2\u7684\u6a21\u578b\uff0c’user_goods’\u6307\u4ee3\u4e2d\u95f4\u8868\u7684\u540d\u79f0\uff0c’goods_id’\u3001’user_id’\u5206\u522b\u4ee3\u8868\u4e2d\u95f4\u8868\u548c\u4e24\u4e2a\u6a21\u578b\u4e4b\u95f4\u7684\u5173\u8054\u5b57\u6bb5\u3002<\/p>\n
\u4e09\u3001\u603b\u7ed3<\/p>\n
\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd\u4e86thinkphp\u4e2d\u57fa\u4e8eDb\u7c7b\u7684\u8fde\u8868\u67e5\u8be2\u4ee5\u53ca\u5173\u8054\u67e5\u8be2\u65b9\u6cd5\u3002\u5728\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u591a\u8868\u67e5\u8be2\uff0c\u901a\u8fc7\u5b66\u4e60\u672c\u6587\u7684\u5185\u5bb9\uff0c\u76f8\u4fe1\u5df2\u7ecf\u638c\u63e1\u4e86\u76f8\u5e94\u7684\u57fa\u7840\u77e5\u8bc6\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u6570\u636e\u8868\u8bbe\u8ba1\u5e94\u8be5\u5408\u7406\uff0c\u4ee5\u6700\u5927\u5316\u51cf\u5c11\u6570\u636e\u5197\u4f59\u548c\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002\u56e0\u6b64\uff0c\u5728\u8fdb\u884c\u591a\u8868\u67e5\u8be2\u65f6\uff0c\u6211\u4eec\u4e5f\u5e94\u8be5\u9075\u5faa\u8fd9\u4e00\u539f\u5219\uff0c\u5c3d\u53ef\u80fd\u5730\u5c06\u6570\u636e\u62c6\u5206\u6210\u591a\u4e2a\u8868\u8fdb\u884c\u5904\u7406\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fthinkphp\u600e\u4e48\u591a\u8868\u67e5\u8be2\u8bed\u53e5\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":"
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