Main.php

<?php
// Your code here!
touch('test.text');
mkdir('test/hoge/fuga');
mkdir('test');
touch('test/test2.text');
mkdir('test/test');
touch('test/test/test3.hoge');
mkdir('test/test2');
touch('test/test2/test2-2.text');
$fnc = null;
$fnc = function (string $dir, string $file_pattern = "{*.*}", ?int $count = null) use (&$fnc) {
    $count = $count ?? -1;
    $_files = [];
    $files_pattern = $dir.$file_pattern;
    $files = glob($files_pattern, GLOB_NOSORT | GLOB_BRACE);
    if (is_array($files))
        foreach ($files as $file_name)
            $_files[] = $file_name;
    if ($count == 0)
        return $_files;
    $dirs_pattern = $dir.'*/';
    $dirs = glob($dirs_pattern, GLOB_ONLYDIR | GLOB_MARK);
    $tmp;
    if ($count > 0)
        $count--;
    if (is_array($dirs))
        foreach($dirs as $dir_name)
            if ($tmp = $fnc($dir_name, $file_pattern, $count))
                $_files = array_merge($_files,$tmp);
    return $_files;
};
echo "search *.text \r\n";
foreach($fnc("./", "{*.text}") as $file_name) {
    echo $file_name . "\r\n";
}
echo "\r\n";
echo "search count: 1 *.text \r\n";
foreach($fnc("./", "{*.text}", 1) as $file_name) {
    echo $file_name . "\r\n";
}
echo "\r\n";
echo "search *.hoge \r\n";
foreach($fnc("./", "{*.hoge}") as $file_name) {
    echo $file_name . "\r\n";
}