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(coroutine)\n\n可在各种环境中使用的轻量数据库，支持 FPM、CLI、Swoole、WorkerMan，可选的连接池 (协程)\n\n## 技术交流\n\n知乎：https://www.zhihu.com/people/onanying    \n官方QQ群：[284806582](https://shang.qq.com/wpa/qunwpa?idkey=b3a8618d3977cda4fed2363a666b081a31d89e3d31ab164497f53b72cf49968a)\n, [825122875](http://shang.qq.com/wpa/qunwpa?idkey=d2908b0c7095fc7ec63a2391fa4b39a8c5cb16952f6cfc3f2ce4c9726edeaf20)\n敲门暗号：db\n\n## Installation\n\n```\ncomposer require mix/database\n```\n\n## Quick start\n\n注意：[协程环境中，不可在并发请求中使用单例](https://openmix.org/mix-php/docs/3.0/#/zh-cn/instructions?id=%e5%8d%8f%e7%a8%8b%e5%8d%95%e4%be%8b%e5%ae%9e%e4%be%8b%e5%8c%96)\n\n```php\n$db = new Mix\\Database\\Database('mysql:host=127.0.0.1;port=3306;charset=utf8;dbname=test', 'username', 'password');\n```\n\n创建\n\n```php\n$db-\u003einsert('users', [\n    'name' =\u003e 'foo',\n    'balance' =\u003e 0,\n]);\n```\n\n查询\n\n```php\n$db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003efirst();\n```\n\n更新\n\n```php\n$db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003eupdate('name', 'foo1');\n```\n\n删除\n\n```php\n$db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003edelete();\n```\n\n## 启动连接池 Pool\n\n在 `Swoole` 协程环境中，启动连接池\n\n```php\n$maxOpen = 50;        // 最大开启连接数\n$maxIdle = 20;        // 最大闲置连接数\n$maxLifetime = 3600;  // 连接的最长生命周期\n$waitTimeout = 0.0;   // 从池获取连接等待的时间, 0为一直等待\n$db-\u003estartPool($maxOpen, $maxIdle, $maxLifetime, $waitTimeout);\nSwoole\\Runtime::enableCoroutine(); // 必须放到最后，防止触发协程调度导致异常\n```\n\n连接池统计\n\n```php\n$db-\u003epoolStats(); // array, fields: total, idle, active\n```\n\n## 创建 Insert\n\n创建\n\n```php\n$data = [\n    'name' =\u003e 'foo',\n    'balance' =\u003e 0,\n];\n$db-\u003einsert('users', $data);\n```\n\n获取 InsertId\n\n```php\n$data = [\n    'name' =\u003e 'foo',\n    'balance' =\u003e 0,\n];\n$insertId = $db-\u003einsert('users', $data)-\u003elastInsertId();\n```\n\n替换创建\n\n```php\n$data = [\n    'name' =\u003e 'foo',\n    'balance' =\u003e 0,\n];\n$db-\u003einsert('users', $data, 'REPLACE INTO');\n```\n\n批量创建\n\n```php\n$data = [\n    [\n        'name' =\u003e 'foo',\n        'balance' =\u003e 0,\n    ],\n    [\n        'name' =\u003e 'foo1',\n        'balance' =\u003e 0,\n    ]\n];\n$db-\u003ebatchInsert('users', $data);\n```\n\n使用函数创建\n\n```php\n$data = [\n    'name' =\u003e 'foo',\n    'balance' =\u003e 0,\n    'add_time' =\u003e new Mix\\Database\\Expr('CURRENT_TIMESTAMP()'),\n];\n$db-\u003einsert('users', $data);\n```\n\n## 查询 Select\n\n### 获取结果\n\n|  方法名称   | 描述  |\n|  ----  | ----  |\n| get(): array  | 获取多行 |\n| first(): array or object  | 获取第一行 |\n| value(string $field): mixed  | 获取第一行某个字段 |\n| statement(): \\PDOStatement  | 获取原始结果集 |\n\n### Where\n\n#### AND\n\n```php\n$db-\u003etable('users')-\u003ewhere('id = ? AND name = ?', 1, 'foo')-\u003eget();\n```\n\n```php\n$db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003ewhere('name = ?', 'foo')-\u003eget();\n```\n\n#### OR\n\n```php\n$db-\u003etable('users')-\u003ewhere('id = ? OR id = ?', 1, 2)-\u003eget();\n```\n\n```php\n$db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003eor('id = ?', 2)-\u003eget();\n```\n\n#### IN\n\n```php\n$db-\u003etable('users')-\u003ewhere('id IN (?)', [1, 2])-\u003eget();\n```\n\n```php\n$db-\u003etable('users')-\u003ewhere('id NOT IN (?)', [1, 2])-\u003eget();\n```\n\n### Select\n\n```php\n$db-\u003etable('users')-\u003eselect('id, name')-\u003eget();\n```\n\n```php\n$db-\u003etable('users')-\u003eselect('id', 'name')-\u003eget();\n```\n\n```php\n$db-\u003etable('users')-\u003eselect('name AS n')-\u003eget();\n```\n\n### Order\n\n```php\n$db-\u003etable('users')-\u003eorder('id', 'desc')-\u003eget();\n```\n\n```php\n$db-\u003etable('users')-\u003eorder('id', 'desc')-\u003eorder('name', 'asc')-\u003eget();\n```\n\n### Limit\n\n```php\n$db-\u003etable('users')-\u003elimit(5)-\u003eget();\n```\n\n```php\n$db-\u003etable('users')-\u003eoffset(10)-\u003elimit(5)-\u003eget();\n```\n\n### Group \u0026 Having\n\n```php\n$db-\u003etable('news')-\u003eselect('uid, COUNT(*) AS total')-\u003egroup('uid')-\u003ehaving('COUNT(*) \u003e ?', 0)-\u003eget();\n```\n\n```php\n$db-\u003etable('news')-\u003eselect('uid, COUNT(*) AS total')-\u003egroup('uid')-\u003ehaving('COUNT(*) \u003e ? AND COUNT(*) \u003c ?', 0, 10)-\u003eget();\n```\n\n### Join\n\n```php\n$db-\u003etable('news AS n')-\u003eselect('n.*, u.name')-\u003ejoin('users AS u', 'n.uid = u.id')-\u003eget();\n```\n\n```php\n$db-\u003etable('news AS n')-\u003eselect('n.*, u.name')-\u003eleftJoin('users AS u', 'n.uid = u.id AND u.balance \u003e ?', 10)-\u003eget();\n```\n\n## 更新 Update\n\n更新单个字段\n\n```php\n$db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003eupdate('name', 'foo1');\n```\n\n获取影响行数\n\n```php\n$rowsAffected = $db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003eupdate('name', 'foo1')-\u003erowCount();\n```\n\n更新多个字段\n\n```php\n$data = [\n    'name' =\u003e 'foo1',\n    'balance' =\u003e 100,\n];\n$db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003eupdates($data);\n```\n\n使用表达式更新\n\n```php\n$db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003eupdate('balance', new Mix\\Database\\Expr('balance + ?', 1));\n```\n\n```php\n$data = [\n    'balance' =\u003e new Mix\\Database\\Expr('balance + ?', 1),\n];\n$db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003eupdates($data);\n```\n\n使用函数更新\n\n```php\n$db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003eupdate('add_time', new Mix\\Database\\Expr('CURRENT_TIMESTAMP()'));\n```\n\n```php\n$data = [\n    'add_time' =\u003e new Mix\\Database\\Expr('CURRENT_TIMESTAMP()'),\n];\n$db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003eupdates($data);\n```\n\n## 删除 Delete\n\n删除\n\n```php\n$db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003edelete();\n```\n\n获取影响行数\n\n```php\n$rowsAffected = $db-\u003etable('users')-\u003ewhere('id = ?', 1)-\u003edelete()-\u003erowCount();\n```\n\n## 原生 Raw\n\n```php\n$db-\u003eraw('SELECT * FROM users WHERE id = ?', 1)-\u003efirst();\n```\n\n```php\n$db-\u003eexec('DELETE FROM users WHERE id = ?', 1)-\u003erowCount();\n```\n\n## 事务 Transaction\n\n手动事务\n\n```php\n$tx = $db-\u003ebeginTransaction();\ntry {\n    $data = [\n        'name' =\u003e 'foo',\n        'balance' =\u003e 0,\n    ];\n    $tx-\u003einsert('users', $data);\n    $tx-\u003ecommit();\n} catch (\\Throwable $ex) {\n    $tx-\u003erollback();\n    throw $ex;\n}\n```\n\n自动事务，执行异常自动回滚并抛出异常\n\n```php\n$db-\u003etransaction(function (Mix\\Database\\Transaction $tx) {\n    $data = [\n        'name' =\u003e 'foo',\n        'balance' =\u003e 0,\n    ];\n    $tx-\u003einsert('users', $data);\n});\n```\n\n## 调试 Debug\n\n```php\n$db-\u003edebug(function (Mix\\Database\\ConnectionInterface $conn) {\n        var_dump($conn-\u003equeryLog()); // array, fields: time, sql, bindings\n    })\n    -\u003etable('users')\n    -\u003ewhere('id = ?', 1)\n    -\u003eget();\n```\n\n## 日志 Logger\n\n日志记录器，配置后可打印全部SQL信息\n\n```php\n$db-\u003esetLogger($logger);\n```\n\n`$logger` 需实现 `Mix\\Database\\LoggerInterface`\n\n```php\ninterface LoggerInterface\n{\n    public function trace(float $time, string $sql, array $bindings, int $rowCount, ?\\Throwable $exception): void;\n}\n```\n\n## License\n\nApache License Version 2.0, http://www.apache.org/licenses/\n","funding_links":[],"categories":["Frameworks"],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmix-php%2Fdatabase","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmix-php%2Fdatabase","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmix-php%2Fdatabase/lists"}