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app/gateway/vendor/workerman/mysql/README.md

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+# Workerman\Mysql\Connection
+
+Long-living MySQL connection for daemon.
+
+# Install
+```composer require workerman/mysql```
+
+# Usage
+```php
+$db = new Workerman\MySQL\Connection($mysql_host, $mysql_port, $user, $password, $db_bname);
+
+// Get all rows.
+$db1->select('ID,Sex')->from('Persons')->where('sex= :sex')->bindValues(array('sex'=>'M'))->query();
+// Equivalent to.
+$db1->select('ID,Sex')->from('Persons')->where("sex='F'")->query();
+// Equivalent to.
+$db->query("SELECT ID,Sex FROM `Persons` WHERE sex='M'");
+
+
+// Get one row.
+$db->select('ID,Sex')->from('Persons')->where('sex= :sex')->bindValues(array('sex'=>'M'))->row();
+// Equivalent to.
+$db->select('ID,Sex')->from('Persons')->where("sex= 'F' ")->row();
+// Equivalent to.
+$db->row("SELECT ID,Sex FROM `Persons` WHERE sex='M'");
+
+
+// Get a column.
+$db->select('ID')->from('Persons')->where('sex= :sex')->bindValues(array('sex'=>'M'))->column();
+// Equivalent to.
+$db->select('ID')->from('Persons')->where("sex= 'F' ")->column();
+// Equivalent to.
+$db->column("SELECT `ID` FROM `Persons` WHERE sex='M'");
+
+// Get single.
+$db->select('ID,Sex')->from('Persons')->where('sex= :sex')->bindValues(array('sex'=>'M'))->single();
+// Equivalent to.
+$db->select('ID,Sex')->from('Persons')->where("sex= 'F' ")->single();
+// Equivalent to.
+$db->single("SELECT ID,Sex FROM `Persons` WHERE sex='M'");
+
+// Complex query.
+$db->select('*')->from('table1')->innerJoin('table2','table1.uid = table2.uid')->where('age > :age')
+->groupBy(array('aid'))->having('foo="foo"')->orderByASC/*orderByDESC*/(array('did'))
+->limit(10)->offset(20)->bindValues(array('age' => 13));
+// Equivalent to.
+$db->query(SELECT * FROM `table1` INNER JOIN `table2` ON `table1`.`uid` = `table2`.`uid` WHERE age > 13
+GROUP BY aid HAVING foo="foo" ORDER BY did LIMIT 10 OFFSET 20“);
+
+// Insert.
+$insert_id = $db->insert('Persons')->cols(array(
+    'Firstname'=>'abc', 
+    'Lastname'=>'efg', 
+    'Sex'=>'M', 
+    'Age'=>13))->query();
+// Equivalent to.
+$insert_id = $db->query("INSERT INTO `Persons` ( `Firstname`,`Lastname`,`Sex`,`Age`) 
+VALUES ( 'abc', 'efg', 'M', 13)");
+
+// Updagte.
+$row_count = $db->update('Persons')->cols(array('sex'))->where('ID=1')
+->bindValue('sex', 'F')->query();
+// Equivalent to.
+$row_count = $db->update('Persons')->cols(array('sex'=>'F'))->where('ID=1')->query();
+// Equivalent to.
+$row_count = $db->query("UPDATE `Persons` SET `sex` = 'F' WHERE ID=1");
+
+// Delete.
+$row_count = $db->delete('Persons')->where('ID=9')->query();
+// Equivalent to.
+$row_count = $db->query("DELETE FROM `Persons` WHERE ID=9");
+
+// Transaction.
+$db1->beginTrans();
+....
+$db1->commitTrans(); // or $db1->rollBackTrans();
+
+```

app/gateway/vendor/workerman/mysql/composer.json

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+{
+    "name"  : "workerman/mysql",
+    "type"  : "library",
+    "keywords": ["mysql", "pdo", "pdo_mysql"],
+    "homepage": "http://www.workerman.net",
+    "license" : "MIT",
+    "description": "Long-living MySQL connection for daemon.",
+    "require": {
+        "php": ">=5.3",
+        "ext-pdo": "*",
+        "ext-pdo_mysql": "*"
+    },
+    "autoload": {
+        "psr-4": {"Workerman\\MySQL\\": "./src"}
+    }
+}