4种PHP回调函数风格
匿名函数
----
```php
$server->on('Request', function ($req, $resp) use ($a, $b, $c) {
echo "hello world";
});
```
> 可使用`use`向匿名函数传递参数
类静态方法
---
```php
class A
{
static function test($req, $resp)
{
echo "hello world";
}
}
$server->on('Request', 'A::Test');
$server->on('Request', array('A', 'Test'));
```
函数
----
```php
function my_onRequest($req, $resp)
{
echo "hello world";
}
$server->on('Request', 'my_onRequest');
```
对象方法
----
```php
class A
{
function test($req, $resp)
{
echo "hello world";
}
}
$object = new A();
$server->on('Request', array($object, 'test'));
```
匿名函数
----
```php
$server->on('Request', function ($req, $resp) use ($a, $b, $c) {
echo "hello world";
});
```
> 可使用`use`向匿名函数传递参数
类静态方法
---
```php
class A
{
static function test($req, $resp)
{
echo "hello world";
}
}
$server->on('Request', 'A::Test');
$server->on('Request', array('A', 'Test'));
```
> 对应的静态方法必须为`public`
函数
----
```php
function my_onRequest($req, $resp)
{
echo "hello world";
}
$server->on('Request', 'my_onRequest');
```
对象方法
----
```php
class A
{
function test($req, $resp)
{
echo "hello world";
}
}
$object = new A();
$server->on('Request', array($object, 'test'));
```
> 对应的方法必须为`public`
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