PHP - 使用递归将“已检查”连接到多维数组中的每个字符串值

如何解决PHP - 使用递归将“已检查”连接到多维数组中的每个字符串值

我在 PHP 中有一个多维数组，想使用递归将一个字符串连接到每个字符串元素上。数组如下：

$array = Array
(
    [p] => Array
        (
            [0] => This Porsche 993 Carrera Cabriolet represents a great opportunity to acquire an open-top variant of one of the most coveted 911 models.
            [1] => First registered on 5 August 1994,M912 SGY displays 10,630 miles on the odometer with a clock change at 66,244 miles in 2014.
            [2] => The car’s Aventura Green metallic paintwork is reported to be in good condition,presenting well for its age and mileage.
            [3] => The Marble Grey leather interior is believed to be entirely original.
            [4] => Serviced by Porsche specialist Portiacraft in July 2020 at 76,598 miles,this consisted of an annual oil and filter service.
            [5] => The last MOT was undertaken on 6 July 2020 at 76,598 miles.
            [6] => It is supplied with a Porsche Club Great Britain folder with records of main dealer and specialist service history.
            [7] => This Porsche 911 Carrera Cabriolet presents in highly original and well-maintained condition.
            [8] => Summary of maintenance history:
            [9] => Array
                (
                    [strong] => The description of this auction lot is,to the best of the seller's knowledge,accurate and not misleading.
                )

            [10] => Array
                (
                    [strong] =>  All UK-registered cars and motorbikes on Collecting Cars are run through an online HPI check. This vehicle shows no insurance database markers for damage or theft,and has no finance owing.
                )

        )

    [ul] => Array
        (
            [li] => Array
                (
                    [0] => 04/11/1996 – 16,120 miles
                    [1] => 18/11/1998 – 25,086 miles
                    [2] => 09/09/1999 – 28,769 miles
                    [3] => 21/02/2000 – 31,469 miles
                    [4] => 22/06/2001 – 36,055 miles
                    [5] => 29/10/2002 – 40,781 miles
                    [6] => 02/03/2005 – 46,238 miles
                    [7] => 24/03/2006 – 49,459 miles
                    [8] => 03/07/2007 – 53,051 miles
                    [9] => 17/12/2008 – 56,582 miles
                    [10] => 20/05/2010 – 57,385 miles
                    [11] => 08/06/2011 – 61,653 miles
                    [12] => 15/05/2012 – 64,425 miles
                    [13] => 17/04/2013 – 66,026 miles
                    [14] => 07/06/2014 – 66,244 miles
                    [15] => 14/09/2015 – 68,411 miles
                    [16] => 27/02/2018 – 74,856 miles
                    [17] => 06/08/2019 – ~76,400 miles
                    [18] => 06/07/2020 – 76,598 miles
                )

        )

)

理想情况下，结果应如下所示：

$array = Array
(
    [p] => Array
        (
            [0] => This Porsche 993 Carrera Cabriolet represents a great opportunity to acquire an open-top variant of one of the most coveted 911 models. checked
            [1] => First registered on 5 August 1994,244 miles in 2014. checked
            [2] => The car’s Aventura Green metallic paintwork is reported to be in good condition,presenting well for its age and mileage. checked
            [3] => The Marble Grey leather interior is believed to be entirely original. checked
            [4] => Serviced by Porsche specialist Portiacraft in July 2020 at 76,this consisted of an annual oil and filter service. checked
            [5] => The last MOT was undertaken on 6 July 2020 at 76,598 miles. checked
            [6] => It is supplied with a Porsche Club Great Britain folder with records of main dealer and specialist service history. checked
            [7] => This Porsche 911 Carrera Cabriolet presents in highly original and well-maintained condition. checked
            [8] => Summary of maintenance history: checked
            [9] => Array
                (
                    [strong] => The description of this auction lot is,accurate and not misleading. checked
                )

            [10] => Array
                (
                    [strong] =>  All UK-registered cars and motorbikes on Collecting Cars are run through an online HPI check. This vehicle shows no insurance database markers for damage or theft,and has no finance owing. checked
                )

        )

    [ul] => Array
        (
            [li] => Array
                (
                    [0] => 04/11/1996 – 16,120 miles checked
                    [1] => 18/11/1998 – 25,086 miles checked
                    [2] => 09/09/1999 – 28,769 miles checked
                    [3] => 21/02/2000 – 31,469 miles checked
                    [4] => 22/06/2001 – 36,055 miles checked
                    [5] => 29/10/2002 – 40,781 miles checked
                    [6] => 02/03/2005 – 46,238 miles checked
                    [7] => 24/03/2006 – 49,459 miles checked
                    [8] => 03/07/2007 – 53,051 miles checked
                    [9] => 17/12/2008 – 56,582 miles checked
                    [10] => 20/05/2010 – 57,385 miles checked
                    [11] => 08/06/2011 – 61,653 miles checked
                    [12] => 15/05/2012 – 64,425 miles checked
                    [13] => 17/04/2013 – 66,026 miles checked
                    [14] => 07/06/2014 – 66,244 miles checked
                    [15] => 14/09/2015 – 68,411 miles checked
                    [16] => 27/02/2018 – 74,856 miles checked
                    [17] => 06/08/2019 – ~76,400 miles checked
                    [18] => 06/07/2020 – 76,598 miles checked
                )

        )

)

我尝试了以下方法：

$addedChecked = $this->addCheckedRecursive($array);

private function addCheckedRecursive($array)
    {
        if(!is_array($array)) {
            return $array . ' checked';
        }

        foreach($array as $v) {
            $this->addCheckedRecursive($v);
        }
    }

还有

$addedChecked = array_walk_recursive($array,function (&$value) {
            $value .= ' checked';
        });

后者只是返回 true。

对于信息，每个数组的每个元素将始终是一个字符串，我还想保留当前的数组结构。任何帮助表示赞赏。

解决方法

试试这个：

$addedChecked = $this->addCheckedRecursive($array);

private function addCheckedRecursive($array)
{
    if (!is_array($array)) {
        return $array . ' checked';
    }
    else
    {
        for ($i = 0; $i < count($array); $i++) {
            $array[$i] = $this->addCheckedRecursive($array[$i]);
        }
    
        return $array;
    }
}

,

你为什么不试试 array_walk_recursive 或 array_replace_recursive ？

文档可以在 here

,

有一个内置函数，您可以使用它来实现您想要的。 如果您按如下方式使用 array_walk_recursive：

// Say you have your array $xmlArray
array_walk_recursive($xmlArray,function (&$value) {
    $value .= ' checked';
});

// Since $xmlArray is now modified (in place)
echo '<pre>';
print_r($xmlArray);
echo '</pre>';

如果您不希望更改 $xmlArray 作为副作用，可以将数组的值副本分配给新变量。

$addedChecked = $xmlArray;
array_walk_recursive($addedChecked,function (&$value) {
    $value .= ' checked';
});

// Since $addedChecked is now modified (in place)
echo '<pre>';
print_r($addedChecked);
echo '</pre>';

函数通过引用接收数组，因此会直接修改数组作为函数的副作用。这是需要注意的一件重要事情，它不返回数组，而只返回函数是否​​在您提供的数组上成功执行。

这将遍历每个键 => 值对，如果值是数组类型，则递归执行此操作。您可以简单地连接到值（我们通过引用传递值）来更新它。