PHP-遍歷不同的值型別

我有類的物件，$values例如：

Array
(
[0] => App\ValueObject\Features Object
(
[feature:App\ValueObject\Features:private] => CONNECT_NETWORKS_ON_SIGN_UP
[value:App\ValueObject\Features:private] => 1
)

[1] => App\ValueObject\Features Object
(
[feature:App\ValueObject\Features:private] => SHOW_BILLING
[value:App\ValueObject\Features:private] => 1
)

[2] => App\ValueObject\Features Object
(
[feature:App\ValueObject\Features:private] => FEATURE_FLAGS
[value:App\ValueObject\Features:private] => 'activity'
)
)

所有陣列鍵都回傳boolean型別值，期望一個回傳string值。

我的代碼結果：

$arrays = array_map(
        function($value) { return [strtolower((string) $value->getFeature())]; },
        iterator_to_array($values)
    );
return array_merge(...$arrays);

回傳功能名稱串列，例如：

"features": [
            "connect_networks_on_sign_up",
            "show_billing",
            "feature_flags"
        ]

我要編輯的是最后一個我們寫它的值而 不是 特征名稱（$value->getValue()）

我假設在這里使用in_array() PHP 函式是最好的方法，但我找不到在當前方法中使用它的方法。

嘗試使用foreach()回圈但沒有任何反應，就像它有問題一樣：

    $features = [];
    foreach ($values as $value)
    {
        $setParam = $value->getFeature();
        if ($value == 'FEATURE_FLAGS') {
            $setParam = $value->getValue();
        }
        $features[] = strtolower((string) $setParam);
    }
    return $features;

有人可以幫忙嗎？

謝謝

uj5u.com熱心網友回復：

您可能應該對功能代碼進行操作FEATURE_FLAGS，而不是假設陣列中的最后一個功能始終包含標志。使用您現有的代碼，這可能很簡單：

$arrays = array_map(
    function($value)
    {
        /*
         * If the current Features object has the feature code FEATURE_FLAGS,
         * return the value itself, otherwise return the feature code in lowercase
         */
        return ($value->getFeature() == 'FEATURE_FLAGS') ? [$value->getValue()]:[strtolower((string) $value->getFeature())];
    },
    iterator_to_array($values)
);

如果您想定義一個需要以這種方式處理的特征代碼陣列，您可以在回呼內部定義它，但在外部定義它可能是一個更好的主意。然后，您可以將其傳遞給回呼use

/*
 * Define an array of feature codes that we want to return
 * values for
 */

$valueCaptureFeatures = ['FEATURE_FLAGS'];

$arrays = array_map(
    function($value) use ($valueCaptureFeatures) // <-- Put our $valueCaptureFeatures in the scope of the callback
    {
        /*
         * If the current Features object has a feature code in the $valueCaptureFeatures array,
         * return the value itself, otherwise return the feature code in lowercase
         */
        return (in_array($value->getFeature(), $valueCaptureFeatures)) ? [$value->getValue()]:[strtolower((string) $value->getFeature())];
    },
    iterator_to_array($values)
);

作業示例：

// Mock the Features class
class Features
{
    private $feature;
    private $value;
    
    public function __construct($feature, $value)
    {
        $this->feature = $feature;
        $this->value   = $value;
    }
    
    public function getFeature()
    {
        return $this->feature;
    }
    
    public function setFeature($feature): void
    {
        $this->feature = $feature;
    }
    
    public function getValue()
    {
        return $this->value;
    }
    
    public function setValue($value): void
    {
        $this->value = $value;
    }
}

// Mock an iterator with test Feature instances
$values = new ArrayIterator( [
    new Features('CONNECT_NETWORKS_ON_SIGN_UP', 1),
    new Features('SHOW_BILLING', 1),
    new Features('FEATURE_FLAGS', 'activity')
]);

/*
 * Define an array of feature codes that we want to return
 * values for
 */

$valueCaptureFeatures = ['FEATURE_FLAGS'];

$arrays = array_map(
    function($value) use ($valueCaptureFeatures) // <-- Put our $valueCaptureFeatures in the scope of the callback
    {
        /*
         * If the current Features object has a feature code in the $valueCaptureFeatures array,
         * return the value itself, otherwise return the feature code in lowercase
         */
        return (in_array($value->getFeature(), $valueCaptureFeatures)) ? [$value->getValue()]:[strtolower((string) $value->getFeature())];
    },
    iterator_to_array($values)
);

$output =  array_merge(...$arrays);

$expectedResult = [
    'connect_networks_on_sign_up',
    'show_billing',
    'activity'
];

assert($output == $expectedResult, 'Result should match expectations');

print_r($output);

標籤：php 数组

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