在选择列表中搜索

Question

目前正在创建此项目，并且在如何在选择列表中创建搜索时遇到问题。我想从选项值中搜索。我怎样才能在选择列表上创建这种搜索？

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<?php
error_reporting(0);


//connect to database
$conn = mysqli_connect("localhost", "root", "", "waterdis_stbwd");
if(mysqli_connect_errno($conn)) {
echo "Unable to connect to database server";
}

//query database for items to populate
$sql = "SELECT id FROM usrs";
$query = mysqli_query($conn, $sql);

echo '<select id="slct">';
echo '<option value="">Select ID</option>';
while($id = mysqli_fetch_assoc($query)){
echo "<option>{$id['id']}</option>";
}
echo '</select>';


?>

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Answer 1

您需要使用插件，例如select2

https://select2.github.io/examples.html

https://select2.github.io/

Answer 2

<?php
error_reporting(0);


//connect to database
$conn = mysqli_connect("localhost", "root", "", "waterdis_stbwd");
if(mysqli_connect_errno($conn)) {
echo "Unable to connect to database server";
}

//query database for items to populate
$sql = "SELECT id FROM usrs";
$query = mysqli_query($conn, $sql);

echo '<select id="slct">';
echo '<option value="">Select ID</option>';
while($id = mysqli_fetch_assoc($query)){
echo "<option value="{$id['id']}">{$id['id']}</option>";
}
echo '</select>';


?>