is_file, is_dir, file_get_contents, file_put_content, isFile, isDir, fread, fwrite

<h1>function</h1>

<?php

header("Content-Type: text/html; charset=UTF-8");

var_dump(is_file("text.txt"));

var_dump(is_dir("text.txt"));

echo file_get_contents("text.txt");

// file_put_contents('text.txt', rand(1,100));

?>

<h1>oop</h1>

<?php

$file = new SplFileObject('text.txt', 'r');

var_dump($file->isFile());

var_dump($file->isDir());

var_dump($file->fread($file->getSize()));

$file->fwrite(rand(1,100));

?>