Question

我使用此代码搜索一对值＆amp;关键的多维数组

当lang为＆＃34; en＆＃34;

时，我需要提取对的值

它适用于我，但我thibk不是PHP 7的好代码

$arr = [['lang' => null, 'title' => 'Main kaff'],
['lang' => 'en', 'title' => 'May way'],
['lang' => 'es', 'title' => 'Mi camino'],
['lang' => 'fr', 'title' => 'Mon chaimin']];

$key = "lang";

function multiSearch(array $array, array $pairs)
{
    $found = array();
    foreach ($array as $aKey => $aVal) {
        $coincidences = 0;
        foreach ($pairs as $pKey => $pVal) {
            if (array_key_exists($pKey, $aVal) && $aVal[$pKey] == $pVal) {
                $coincidences++;
            }
        }

        if ($coincidences == count($pairs)) {
            $found[$aKey] = $aVal;
        }
    }

    return $found;
} 

$x = multiSearch($arr,  array('lang' => 'en'));

var_dump($x);

结果是正确的

array(1) {
  [1]=>
  array(2) {
    ["lang"]=>
    string(2) "en"
    ["title"]=>
    string(7) "May way"
  }
}

Answer 1

最简化的方式： -

<?php

$arr = [['lang' => null, 'title' => 'Main kaff'],
['lang' => 'en', 'title' => 'May way'],
['lang' => 'es', 'title' => 'Mi camino'],
['lang' => 'fr', 'title' => 'Mon chaimin']];

$lang= "en";

function multiSearch($arr,$lang)
{ 
   return $arr[array_search($lang,array_column($arr,'lang'))];  
}
$x = multiSearch($arr, $lang);
print_r($x);

输出： - https://eval.in/850435

详细阐述了发生了什么的方法： -

<?php

$arr = [['lang' => null, 'title' => 'Main kaff'],
['lang' => 'en', 'title' => 'May way'],
['lang' => 'es', 'title' => 'Mi camino'],
['lang' => 'fr', 'title' => 'Mon chaimin']];

$lang= "en";// language you want to search

function multiSearch($arr,$lang)
{ 

   $array = array_column($arr,'lang'); // get lang-key all values as a single dimensional array from original multidimensional array
   $key = array_search($lang,$array); // get key based on search-language-match from this single dimensional array

    return $arr[$key]; // based on key return sub-array from original multi-dimensional array
} 

$x = multiSearch($arr, $lang);// call function with original array and language you want to search

print_r($x); // print output

输出： - https://eval.in/850427

Answer 2

重新安排您的数据，一切都变得如此简单：

$arrTitle = [
    null => 'Main kaff',
    'en' => 'May way',
    'es' => 'Mi camino',
    'fr' => 'Mon chaimin'
];

echo $arrTitle[null] . "\n";
echo $arrTitle['en'] . "\n";

<强>结果：
主要卡夫可能方式

在多维数组上提取对键值

2 个答案: