
We can make a "Automatic dependenci injector" in classes when her constructors depends other classes (with type hint).

<?php

class Dependence1 {
    function foo() {
        echo "foo";
    }
}

class Dependence2 {
    function foo2() {
        echo "foo2";
    }
}

final class myClass
{
    private $dep1;
    private $dep2;

    public function __construct(
        Dependence1 $dependence1, 
        Dependence2 $dependence2
    )
    {
        $this->dep1 = $dependence1;
        $this->dep2 = $dependence2;        
    }
    
}

// Automatic dependence injection (CLASSES)

$constructor = new ReflectionMethod(myClass::class, '__construct');
$parameters = $constructor->getParameters();

$dependences = [];
foreach ($parameters as $parameter) {
    $dependenceClass = (string) $parameter->getType();
    $dependences[] = new $dependenceClass();
}

$instance = new myClass(...$dependences);
var_dump($instance);

?>

Results in: 

object(myClass)#6 (2) {
  ["dep1":"myClass":private]=>
  object(Dependence1)#4 (0) {
  }
  ["dep2":"myClass":private]=>
  object(Dependence2)#5 (0) {
  }
}

down

webseiten dot designer at googlemail dot com ¶

11 years ago


Note that the public member $class contains the name of the class in which the method has been defined:

<?php
class A {public function __construct() {}}
class B extends A {}

$method = new ReflectionMethod('B', '__construct');
echo $method->class; // prints 'A'
?>

down

-16

no dot prob at gmx dot net ¶

16 years ago


I have written a function which returns the value of a given DocComment tag.


Full example:


<?php


header('Content-Type: text/plain');


class Example

{

    /**

     * This is my DocComment!

     * 

     * @DocTag: prints Hello World!

     */

    public function myMethod()

    {

        echo 'Hello World!';

    }

}


function getDocComment($str, $tag = '')

{

    if (empty($tag))

    {

        return $str;

    }


    $matches = array();

    preg_match("/".$tag.":(.*)(\\r\\n|\\r|\\n)/U", $str, $matches);


    if (isset($matches[1]))

    {

        return trim($matches[1]);

    }


    return '';

}


$method = new ReflectionMethod('Example', 'myMethod');


// will return Hello World!

echo getDocComment($method->getDocComment(), '@DocTag');


?>



Maybe you can add this functionality to the getDocComment methods of the reflection classes.

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PHP官方手册 - 互联网笔记

ReflectionMethod 类

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预定义常量

ReflectionMethod 修饰符

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User Contributed Notes 3 notes