如何从文件夹中数组文件'

我想从'image'文件夹创建自动补全。我有超过50张图片在"图像"文件夹。如何从文件夹数组所有的图像名称?

search.php

<?php
/*
 * Load sample data
 */
include 'data.php';
/*
 * Results array
 */
$results = array();
/*
 * Autocomplete formatter
 */
function autocomplete_format($results) {
    foreach ($results as $result) {
        echo $result[0] . '|' . $result[1] . "'n";
    }
}
/*
 * Search for term if it is given
 */
if (isset($_GET['q'])) {
    $q = strtolower($_GET['q']);
    if ($q) {
        foreach ($data as $key => $value) {
            if (strpos(strtolower($key), $q) !== false) {
                $results[] = array($key, $value);
            }
        }
    }
}
/*
 * Output format
 */
$output = 'autocomplete';
if (isset($_GET['output'])) {
    $output = strtolower($_GET['output']);
}
/*
 * Output results
 */
if ($output === 'json') {
    echo json_encode($results);
} else {
    echo autocomplete_format($results);
}

data.php

    <?php
        $data = array( /*
 * image_name
 */ );

<link rel="stylesheet" type="text/css" href="src/jquery.autocomplete.css">
    <script type="text/javascript" src="src/jquery.autocomplete.js"></script>
<script type="text/javascript" src="src/jquery.min.js"></script>
    <script>
     $("#ac5").autocomplete('search.php', {
            minChars: 1,
            useDelimiter: true,
            selectFirst: true,
            autoFill: true,
        });
    </script>
    <form>
            <input type="text" id="ac5">
        </form>