PHP code example of ant-framework / middleware

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

ant-framework / middleware example snippets

use Ant\Middleware\Pipeline;
use Ant\Middleware\Arguments;

yield;
        echo 321;
    },
    function($str1){
        echo 456;
        yield new Arguments($str1,'world'); //改变在中间件中传递的变量
        echo 654;
    }
];

echo (new Pipeline)				    //实例中间件
	->send('hello')                 //要通过中间件变量
	->through($nodes)              //使用的中间件,必须为可回调类型(callable类型)
	->then(function($str1,$str2){   //挂起所有中间件之后回调的函数
	    return "($str1 $str2)";
	});

// output "123456(hello world)654321"

/////////////////// PHP7 ///////////////////
use Ant\Middleware\Pipeline;
use Ant\Middleware\Arguments;

eturn改变传递参数
    }
];

echo (new Pipeline)
    ->send('hello')
    ->through($nodes)
    ->then(function($hello){
        return $hello;
    });

// output "hello world"

use Ant\Middleware\Pipeline;
use Ant\Middleware\Arguments;

;
        echo 321;
    },
    function(){
        echo 456;
        yield false;
        echo 654;
    },
];

(new Pipeline)->send()->through($nodes)->then(function(){
    echo 'hello world';
});

//output "123456"

use Ant\Middleware\Pipeline;
use Ant\Middleware\Arguments;


        }catch(Exception $e){
            echo "Catch an exception in method 1 , which is thrown by the ".$e->getMessage();
        }
    },
    function(){
        try{
            yield;
        }catch(RuntimeException $e){
            // 此处无法处理方法3抛出的异常，所以跳过了
            echo "Catch an exception in method 2 , which is thrown by the ".$e->getMessage();
        }
    },
    function(){
        throw new Exception('method 3');
    },
];

(new Pipeline)->send()->through($nodes)->then(function(){
    echo 'hello world';
});

//output "Catch an exception in method 1 , which is thrown by the method 3"

(begin) ----------------> function() -----------------> (end)
            ^   ^   ^                   ^   ^   ^
            |   |   |                   |   |   |
            |   |   +------- Mn() ------+   |   |
            |   +----------- ...  ----------+   |
            +--------------- M1() --------------+

/////////////////// PHP5.6 ///////////////////
use Ant\Middleware\Pipeline;
use Ant\Middleware\Arguments;

ld传递传递参数
    }
];

echo (new Pipeline)
    ->send('hello')
    ->through($nodes)
    ->then(function(){
        return $hello;
    });

// output "hello world"