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Pavel8289
Asked:2020-09-10 23:09:54 +0000 UTC2020-09-10 23:09:54 +0000 UTC

按关键字输入单词的关联数组

  • 772

有 2 个数组，一个带有字母，第二个带有名称

 $name = array("Aндрей","Артур","Ваня","Виталик","Богдан");
 $alf =  array ("А","Б","В");

你需要得到这样的东西

Array
(
    [A] => Array
        (
            [0] => Aндрей
            [1] => Артур

        )

    [Б] => Array
        (
            [0] => Богдан

        )

 [В] => Array
        (
            [0] => Ваня
            [1] => Виталик
        )
)

它不能正确组织循环，以便它从字母表中获取第一个索引，并在名称数组上运行比较，如果第一个字母以字母表数组中的索引元素开头，则添加

php

2 个回答

  1. Best Answer
        $names = ["Aндрей", "Артур", "Ваня", "Виталик", "Богдан"];
    $alf  = ["А", "Б", "В"];


    $data = [];
    foreach ($alf as $char) {
        foreach ($names as $name) {
            $keyName = mb_substr($name, 0, 1);

            if ($char == $keyName) {
                if (! array_key_exists($char, $data)) {
                    $data[$char] = [];
                }

                $data[$char][] = $name;
            }

        }
    }
    • 2

  2. 试试这样：

        $name = array("Андрей","Артур","Ваня","Виталик","Богдан");
    $alf =  array ("А","Б","В");
    $output = array();

    foreach ($name as $value) {
        $letter = mb_substr($value, 0, 1, "UTF-8");
        $output[$letter][] = $value;
    }

    ksort($output); //сортируем ключи по алфавиту
    $output = array_intersect_key($output, array_flip($alf)); // Если нужны только те буквы, которые присутствуют в массиве $alf

    echo "<pre>"; print_r($output); echo "</pre>";
    • 2

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