Zend_config注入字符串

Question

以下面的配置为例：

array(
    'key' => 'value',
    'key2' => array(
        'key' => '@@INJECT@@',
        'key2' => 'value'
    ),
    'key3' => '@@INJECT@@'
);

然后此array转换为Zend_Config对象

但是我尝试在转换Zend_Config对象后找到一种用特定值替换@@INJECT@@的方法。

使用基本array，我使用array_walk_recursive()执行此任务，但我找不到Zend_Config对象（我不想转换Zend_Config反对array）。

Answer 1

您可以滚动自己的递归步行器，如下所示：

function configWalkRecursive(Zend_Config $config, $callback)
{
    foreach ($config as $key => $item) {
        if ($item instanceof Zend_Config) {
            // recurse into child Zend_Config objects
            configWalkRecursive($item, $callback);
        } else {
            // run the callback against the element
            $callback($key, $item, $config);
        }
    }
}

迭代Zend_Config中的元素，如果找到另一个Zend_Config则递归，否则将当前项传递给回调函数。

然后，对于您的回调，您可以执行以下操作来测试项目并根据需要进行替换：

$array = array(
    'key' => 'value',
    'key2' => array(
        'key' => '@@INJECT@@',
        'key2' => 'value'
    ),
    'key3' => '@@INJECT@@'
);

$config = new Zend_Config($array, true);

print_r($config);

configWalkRecursive($config, function($key, $item, $configObject) {
    if ('@@INJECT@@' === $item) {
        $configObject->$key = 'somevalue';
    }
);

print_r($config);

输出如下：

Zend_Config Object
(
    [_allowModifications:protected] => 1
    [_index:protected] => 0
    [_count:protected] => 3
    [_data:protected] => Array
        (
            [key] => value
            [key2] => Zend_Config Object
                (
                    [_allowModifications:protected] => 1
                    [_index:protected] => 0
                    [_count:protected] => 2
                    [_data:protected] => Array
                        (
                            [key] => @@INJECT@@
                            [key2] => value
                        )

                    [_skipNextIteration:protected] => 
                    [_loadedSection:protected] => 
                    [_extends:protected] => Array
                        (
                        )

                    [_loadFileErrorStr:protected] => 
                )

            [key3] => @@INJECT@@
        )

    [_skipNextIteration:protected] => 
    [_loadedSection:protected] => 
    [_extends:protected] => Array
        (
        )

    [_loadFileErrorStr:protected] => 
)
Zend_Config Object
(
    [_allowModifications:protected] => 1
    [_index:protected] => 3
    [_count:protected] => 3
    [_data:protected] => Array
        (
            [key] => value
            [key2] => Zend_Config Object
                (
                    [_allowModifications:protected] => 1
                    [_index:protected] => 2
                    [_count:protected] => 2
                    [_data:protected] => Array
                        (
                            [key] => somevalue
                            [key2] => value
                        )

                    [_skipNextIteration:protected] => 
                    [_loadedSection:protected] => 
                    [_extends:protected] => Array
                        (
                        )

                    [_loadFileErrorStr:protected] => 
                )

            [key3] => somevalue
        )

    [_skipNextIteration:protected] => 
    [_loadedSection:protected] => 
    [_extends:protected] => Array
        (
        )

    [_loadFileErrorStr:protected] => 
)