How to use PHP to implement a pinyin first letter search function?

How to use PHP to implement a pinyin first letter search function?

The Pinyin first letter search function is very common in many applications, especially in scenarios such as contact lists or product searches. This article will introduce how to use PHP to implement a pinyin first letter search function.

The idea behind the Pinyin initial letter search function is to filter out the results that meet the conditions by comparing the matching keywords with the Pinyin initial letters in the list based on the keywords entered by the user.

First, we need to prepare a data source, which can be an array or database table. Taking the contact list as an example, we can create an array containing the name and Pinyin initials:

$contactList = [
    ['name' => '张三', 'pinyin' => 'zs'],
    ['name' => '李四', 'pinyin' => 'ls'],
    ['name' => '王五', 'pinyin' => 'ww'],
    // 其他联系人...
];

Next, we can receive the keywords entered by the user through an input box and convert them into Pinyin initials. letter. An open source pinyin conversion library is used here, such as the "overtrue/pinyin" library.

require_once 'vendor/autoload.php'; // 加载拼音转换库

use OvertruePinyinPinyin;

$pinyin = new Pinyin();
$keyword = isset($_POST['keyword']) ? trim($_POST['keyword']) : '';

if ($keyword) {
    $keywordPinyin = implode('', $pinyin->convert($keyword, Pinyin::DEFAULT_MODE)) // 将关键字转换为拼音
    // 进行搜索逻辑...
}

In the search logic, we can traverse the contact list and check whether the first letter of each contact's pinyin matches the keyword. If the match is successful, the contact is added to the results array.

$results = [];

foreach ($contactList as $contact) {
    if (stripos($contact['pinyin'], $keywordPinyin) === 0) {
        $results[] = $contact;
    }
}

Finally, we can display the search results.

if (count($results) > 0) {
    echo "<ul>";
    foreach ($results as $result) {
        echo "<li>{$result['name']}</li>";
    }
    echo "</ul>";
} else {
    echo "没有找到符合条件的联系人";
}

So far, we have completed a simple pinyin first letter search function. Users can enter keywords to filter out qualified contacts based on the first letter of Pinyin.

To sum up, it is not complicated to use PHP to implement a pinyin first letter search function. Use the Pinyin conversion library to convert keywords into Pinyin initials, and compare them with the Pinyin initials in the data source to filter results that meet the conditions. Hope this article is helpful to you.

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