README

Introduction

Traditional PDO to Swoole Coroutine migration plan without cost.

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Install

The best way to install: Composer :

composer require swlib/swpdo

Coroutine

The bottom layer of Swoole implements coroutine scheduling, and the business layer does not need to be aware. Developers can use synchronization code writing methods to achieve the effect and ultra-high performance of asynchronous IO without perception, avoiding the discrete code logic and trapping caused by traditional asynchronous callbacks. Too many callback layers causes the code too difficult to maintain.

It needs to be used in event callback functions such as onRequet, onReceive, and onConnect, or wrapped using the go keyword (swoole.use_shortname is on by default).

Example

Because PDO uses multiple engines, it is difficult at the PHP level to return different instances with class - implemented constructors.

Except that the constructor is different, all methods use in the same way.

query

$options = [
    'mysql:host=127.0.0.1;dbname=test;charset=UTF8',
    'root',
    'root'
];
$sql = 'select * from `user` LIMIT 1';

//PDO
$pdo = new \PDO(...$options);
$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false); //strong type
$pdo_both = $pdo->query($sql)->fetch();
$pdo_assoc = $pdo->query($sql)->fetch(\PDO::FETCH_ASSOC);
$pdo_object = $pdo->query($sql)->fetch(\PDO::FETCH_OBJ);
$pdo_number = $pdo->query($sql)->fetch(\PDO::FETCH_NUM);

//SwPDO
$swpdo = SwPDO::construct(...$options); //default is strong type
$swpdo_both = $swpdo->query($sql)->fetch();
$swpdo_assoc = $swpdo->query($sql)->fetch(\PDO::FETCH_ASSOC);
$swpdo_object = $swpdo->query($sql)->fetch(\PDO::FETCH_OBJ);
$swpdo_number = $swpdo->query($sql)->fetch(\PDO::FETCH_NUM);

var_dump($pdo_both === $swpdo_both);
var_dump($pdo_assoc === $swpdo_assoc);
var_dump($pdo_object == $swpdo_object);
var_dump($pdo_number === $swpdo_number);
//output: true true true true

prepare

//PDO
$pdo = new \PDO(...$options);
$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false); //strong type
$statement = $pdo->prepare($sql);
$statement->execute();
$pdo_fetch = $statement->fetch(\PDO::FETCH_ASSOC);
$statement->execute();
$pdo_fetch_all = $statement->fetchAll();
$statement->execute();
$pdo_fetch_all_column = $statement->fetchAll(\PDO::FETCH_COLUMN, 1);
$statement->execute();
$pdo_fetch_column = $statement->fetchColumn();
$statement->execute();

//SwPDO
$swpdo = SwPDO::construct(...$options);
$statement = $swpdo->prepare($sql);
$statement->execute();
$swpdo_fetch = $statement->fetch(\PDO::FETCH_ASSOC);
$statement->execute();
$swpdo_fetch_all = $statement->fetchAll();
$statement->execute();
$swpdo_fetch_all_column = $statement->fetchAll(\PDO::FETCH_COLUMN, 1);
$statement->execute();
$swpdo_fetch_column = $statement->fetchColumn();
$statement->execute();

var_dump($pdo_fetch === $swpdo_fetch); //true
var_dump($pdo_fetch_all === $swpdo_fetch_all); //true
var_dump($pdo_fetch_all_column === $swpdo_fetch_all_column); //true
var_dump($pdo_fetch_column === $swpdo_fetch_column); //true

bind

//PDO
$pdo = new \PDO(...$options);
$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false); //strong type
$statement = $pdo->prepare($sql);
$statement->execute(['id' => 1]);
$pdo_bind_exec = $statement->fetch(\PDO::FETCH_ASSOC);

$statement->bindValue(':id', 1);
$statement->execute();
$pdo_bind_val = $statement->fetch(\PDO::FETCH_ASSOC);

$statement->bindParam(':id', $id);
$statement->execute();
$pdo_bind_param = $statement->fetch(\PDO::FETCH_ASSOC);

//SwPDO
$swpdo = SwPDO::construct(...$options);
$statement = $swpdo->prepare($sql);
$statement->execute(['id' => 1]);
$swpdo_bind_exec = $statement->fetch(\PDO::FETCH_ASSOC);

$statement->bindValue(':id', 1);
$statement->execute();
$swpdo_bind_val = $statement->fetch(\PDO::FETCH_ASSOC);

$statement->bindParam(':id', $id);
$statement->execute();
$swpdo_bind_param = $statement->fetch(\PDO::FETCH_ASSOC);

var_dump($pdo_bind_exec === $swpdo_bind_exec); //true
var_dump($pdo_bind_val === $swpdo_bind_val); //true
var_dump($pdo_bind_param === $swpdo_bind_param); //true