1. Go to this page and download the library: Download salamander/mysql library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
salamander / mysql example snippets
$config = [
// 主库
'rwdb' => [
'host' => "127.0.0.1",
'user' => "root",
'password' => "666666",
'db' => "my_db",
'port' => 3306,
'charset' => "utf8",
],
// 从库组
'rodb' => [
[
'host' => "127.0.0.1",
'user' => "root",
'password' => "666666",
'db' => "my_db",
'port' => 3306,
'charset' => "utf8",
]
]
]
$db = new Workerman\MySQL\Connection([
'host' => $config['rwdb']['host'],
'port' => $config['rwdb']['port'],
'user' => $config['rwdb']['user'],
'password' => $config['rwdb']['password'],
'dbname' => $config['rwdb']['db'],
'charset' => $config['rwdb']['charset'],
]); // 读写主库
if($config["rodb"] && is_array($config["rodb"])) {
$dbConn->setReadOnlyDBList($config["rodb"]);
}
// 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();
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