变量在函数中的变量？ [复制]

Question

我需要帮助：

$foo = array ('Projects', 'Clients');

我需要从预装的库中运行函数

$bar->getProjects()->data
$bar->getClients()->data 

等等。等等

但我在循环中有它。所以我想要类似的东西

foreach($foo as $value)
  $return_value = $bar->get  >>>>$value<<<<  ()->data

如何做到这一点？

Answer 1

请看How to call PHP function from string stored in a Variable:

foreach ($foo as $value) {
  $method = 'get' . $value;
  $return_value = $bar->$method()->data
}

或

foreach ($foo as $value)
  $return_value = $bar->{'get' . $value}()->data;

Answer 2

我会使用反射，一个有据可查的、没有魔法的 API：

<?php

$foo = array ('Projects', 'Clients');
$bar = new MyAwesomeClass();

var_dump(invokeMultipleGetters($bar, $foo));


// could also make this a method on MyAwesomeClass...
function invokeMultipleGetters($object, $propertyNames)
{
    $results = array();
    $reflector = new ReflectionClass($object);

    foreach($propertyNames as $propertyName)
    {
        $method = $reflector->getMethod('get'.$propertyName);
        $result = $method->invoke($bar);
        array_push($results, $result)
    }

    return $results;
}

Answer 3

有一个神奇的方法：__call

function __call($method, $params) {

     $var = substr($method, 3);

     if (strncasecmp($method, "get", 3)) {
         return $this->$var;
     }
     if (strncasecmp($method, "set", 3)) {
         $this->$var = $params[0];
     }
}

你也可以看看call_user_func