搜索 php 多维关联数组，使用键值对和 sql like '%LIKE%' 结构

Question

我有这个 PHP 函数，它可以很好地使用键值对搜索多维关联数组。我现在想扩展它以搜索一个数组，其中键值对具有类似 SQL 的结构，类似于：name = '%john%'.

function search($array, $key, $value)
{
    $results = array();
    like_search_r($array, $key, $value, $results);
    return $results[0];
}

function like_search_r($array, $key, $value, &$results)
{
    if (!is_array($array)) {
        return;
    }

    if (isset($array[$key]) && $array[$key] == $value) {
        $results[] = $array;
    }

    foreach ($array as $subarray) {
        like_search_r($subarray, $key, $value, $results);
    }
}

我在这里找到了一个很好的例子 filter values from an array similar to SQL LIKE '%search%' using PHP 但它只搜索一维数组。这个例子中的关键是 preg_grep 但我还没有想出如何在多维关联数组中使用它。感谢任何帮助。

已编辑：我希望能够传递一组键值对来执行一个 sql 之类的过滤器。原始要求保持不变。过滤器必须支持类似于 sql '%like%' 的东西，不需要输入，return 满足匹配组合时的根数组。如果 key/value 对不匹配，忽略并继续下一个 key/value 对。我的输入数组如下所示：

     array('FIRST_NAME'=>'ma','MIDDLE_NAME'=>'bill',
     'LAST_NAME'=>'jo','ALIASES'=>'phil',
     'DOB'=>'2017-07-05','COUNTRY_OF_BIRTH'=>'Jamaica',
     'Countries1'=>array(array('COUNTRY_CODE'=>'JM'),array('COUNTRY_CODE'=>'AL')),
     'Countries2'=>array(array('COUNTRY_CODE'=>'JM'),array('COUNTRY_CODE'=>'AL')));

可以在此处找到要过滤的示例数组：https://www.tehplayground.com/dIMKbb6Tcw5YU38R

Answer 1

我认为要走的路是 preg_match():

function match($search, $subject)
{
    $search = str_replace('/', '\/', $search);

    return preg_match("/$search/i", (string)$subject);
}

function like_search_r($array, $key, $value, array &$results = [])
{
    if (!is_array($array)) {
        return;
    }

    $key   = (string)$key;
    $value = (string)$value;

    foreach ($array as $arrayKey => $arrayValue) {
        if (match($key, $arrayKey) && match($value, $arrayValue)) {
            // add array if we have a match
            $results[] = $array;
        }

        if (is_array($arrayValue)) {
            // only do recursion on arrays
            like_search_r($arrayValue, $key, $value, $results);
        }
    }
}

$array1 = [
    'foo'    => 'bar',
    'subarr' => [
        'test'                 => 'val',
        'dangerous/characters' => 1,
    ],
];

$results1 = [];
like_search_r($array1, 'fo', 'bar', $results1);
print_r($results1);

/*
Array
(
    [0] => Array
        (
            [foo] => bar
            [subarr] => Array
                (
                    [test] => val
                    [dangerous/characters] => 1
                )

        )

)
*/

$results2 = [];
like_search_r($array1, 'est', 'val', $results2);
print_r($results2);

/*
Array
(
    [0] => Array
        (
            [test] => val
            [dangerous/characters] => 1
        )

)
*/

$results3 = [];
like_search_r($array1, 's/c', 1, $results3);
print_r($results3);

/*
Array
(
    [0] => Array
        (
            [test] => val
            [dangerous/characters] => 1
        )

)
*/

根据您的评论进行了调整：

function match($search, $subject) { /* no change */ }

function like_search_r($array, $key, $value, array &$results = [], $level = 0)
{
    if (!is_array($array)) {
        return false;
    }

    $key   = (string)$key;
    $value = (string)$value;

    $found = false;

    foreach ($array as $arrayKey => $arrayValue) {
        if (match($key, $arrayKey) && match($value, $arrayValue)) {
            return true;
        }

        if (is_array($arrayValue)) {
            // only do recursion on arrays
            // results are only added on top level
            if (like_search_r($arrayValue, $key, $value, $results, $level+1)) {
                if ($level == 1) {
                    $results[] = $array;
                }
                $found = true;
            }
        }
    }

    return $found;
}

$array2   = [['id' => 0, 'values' => ['name' => 'bill']], ['id' => 1, 'values' => ['name' => 'john']]];
$results4 = [];
like_search_r($array2, 'name', 'john', $results4);
print_r($results4);

/*
Array
(
    [0] => Array
        (
            [id] => 1
            [values] => Array
                (
                    [name] => john
                )

        )

)
*/

搜索 php 多维关联数组，使用键值对和 sql like '%LIKE%' 结构

search php multidimensional associative array using key value pair with sql like '%LIKE%' construct

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