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- <h3 id="tablehelper">TableHelper</h3>
- <p><code>TableHelper</code>是对数据库操作进行的封装。</p>
- <p>以下示例根据此表接口进行操作</p>
- <pre><code class="lang-sql"><span class="hljs-keyword">CREATE</span> <span class="hljs-keyword">TABLE</span> <span class="hljs-string">`test`</span> (
- <span class="hljs-string">`id`</span> <span class="hljs-built_in">bigint</span>(<span class="hljs-number">20</span>) <span class="hljs-keyword">unsigned</span> <span class="hljs-keyword">NOT</span> <span class="hljs-literal">NULL</span> AUTO_INCREMENT <span class="hljs-keyword">COMMENT</span> <span class="hljs-string">'id'</span>,
- <span class="hljs-string">`nick`</span> <span class="hljs-built_in">varchar</span>(<span class="hljs-number">20</span>) <span class="hljs-keyword">NOT</span> <span class="hljs-literal">NULL</span> <span class="hljs-keyword">COMMENT</span> <span class="hljs-string">'昵称'</span>,
- <span class="hljs-string">`gender`</span> tinyint(<span class="hljs-number">1</span>) <span class="hljs-keyword">unsigned</span> <span class="hljs-keyword">NOT</span> <span class="hljs-literal">NULL</span> <span class="hljs-keyword">DEFAULT</span> <span class="hljs-string">'1'</span> <span class="hljs-keyword">COMMENT</span> <span class="hljs-string">'性别:1:男,2:女'</span>,
- PRIMARY <span class="hljs-keyword">KEY</span> (<span class="hljs-string">`id`</span>)
- ) <span class="hljs-keyword">ENGINE</span>=<span class="hljs-keyword">InnoDB</span> <span class="hljs-keyword">DEFAULT</span> <span class="hljs-keyword">CHARSET</span>=utf8mb4 <span class="hljs-keyword">COMMENT</span>=<span class="hljs-string">'测试表'</span>;
- </code></pre>
- <h6 id="查询">查询</h6>
- <ul>
- <li>getAll($where, $keyword) 返回多条查询记录,二维数组</li>
- <li>getRow($where, $keyword) 返回一条查询记录,一维数组</li>
- <li>getCount($where, $keyword) 返回符合查询条件的记录数量</li>
- <li>getOne($where, $keyword) 返回符合条件一行的第一列记录</li>
- <li>getCol($where, $keyword) 返回列记录</li>
- </ul>
- <p><code>$where</code>是确切值查询条件,比如主键</p>
- <pre><code class="lang-php">$where = [
- <span class="hljs-string">'id'</span> => <span class="hljs-number">1</span>,
- ];
- <span class="hljs-comment">// or</span>
- $where = [
- <span class="hljs-string">'nick'</span> => <span class="hljs-string">'solu'</span>,
- <span class="hljs-string">'gender'</span> => <span class="hljs-number">1</span>,
- ];
- getRow($where);
- </code></pre>
- <p>复杂查询可以组合<code>$keyword</code>配置查询</p>
- <pre><code class="lang-php">$where = [
- ];
- $keyword = [
- <span class="hljs-string">'_field'</span> => <span class="hljs-string">'id,nick'</span>, <span class="hljs-comment">// 指定查询字段</span>
- <span class="hljs-string">'_where'</span> => <span class="hljs-string">"nick like 'so%'"</span>, <span class="hljs-comment">// 复杂where条件</span>
- <span class="hljs-string">'_limit'</span> => <span class="hljs-string">'0,5'</span>, <span class="hljs-comment">// 查询数量</span>
- <span class="hljs-string">'_sortKey'</span> => <span class="hljs-string">'id DESC'</span>, <span class="hljs-comment">// 排序</span>
- <span class="hljs-string">'_groupby'</span> => <span class="hljs-string">'id'</span>, <span class="hljs-comment">// 分组操作</span>
- <span class="hljs-string">'_debug'</span> => <span class="hljs-keyword">true</span>, <span class="hljs-comment">// 打印sql语句,会结束程序运行</span>
- ];
- getAll($where, $keyword);
- </code></pre>
- <h6 id="插入">插入</h6>
- <ul>
- <li>addObject($data) 插入一条数据</li>
- <li>addObjects($cols, $datas) 插入多条数据,需要指定字段$cols</li>
- <li>addObjects2($datas) 插入多条记录,读取第一条记录字段名</li>
- <li>addObjectNx($data, $where) 如果不存在才进行插入操作</li>
- <li>replaceObject($data) replace into 插入数据</li>
- </ul>
- <pre><code class="lang-php">$data = [
- <span class="hljs-string">'nick'</span> => <span class="hljs-string">'solu'</span>,
- <span class="hljs-string">'gender'</span> => <span class="hljs-number">1</span>,
- ];
- addObject($data);
- $cols = [<span class="hljs-string">'nick'</span>, <span class="hljs-string">'gender'</span>];
- $datas = [
- [
- <span class="hljs-string">'nick'</span> => <span class="hljs-string">'solu'</span>,
- <span class="hljs-string">'gender'</span> => <span class="hljs-number">1</span>,
- ],
- [
- <span class="hljs-string">'nick'</span> => <span class="hljs-string">'some'</span>
- <span class="hljs-string">'gender'</span> => <span class="hljs-number">1</span>,
- ],
- ];
- addObjects($cols, $datas);
- <span class="hljs-comment">// or</span>
- addObjects2($datas);
- </code></pre>
- <h6 id="删除">删除</h6>
- <ul>
- <li>delObject($where) 删除记录</li>
- </ul>
- <pre><code class="lang-php">$where = [<span class="hljs-string">'id'</span> => <span class="hljs-number">1</span>];
- delObject($where);
- </code></pre>
- <h6 id="更新">更新</h6>
- <ul>
- <li>updateObject($data, $where) 更新操作</li>
- </ul>
- <pre><code class="lang-php">$where = [<span class="hljs-string">'id'</span> => <span class="hljs-number">1</span>];
- $data = [<span class="hljs-string">'nick'</span> => <span class="hljs-string">'foobar'</span>];
- updateObject($data, $where);
- </code></pre>
- <h6 id="redis2mysql">Redis2Mysql</h6>
- <p><code>Redis2Mysql</code>是对<code>TableHelper</code>进行缓存封装,使用方法上基本保持一致。</p>
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