Иван

$id = isset($_SERVER['REQUEST_URI']) ? basename($_SERVER['REQUEST_URI']) : false;
if ($id !== false) {
    // ...
}

curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

<IfModule mod_rewrite.c>

# Enable rewrite rules
RewriteEngine on

# Base directory
RewriteBase /

# Deny direct access to .txt files
RewriteRule ^content/(.*)\.txt$ - [R=404,L]

RewriteRule ^\d+$ my.php [L]

# All URL process by index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*) index.php [PT,L]

</IfModule>

$data = "данные";
$path = __DIR__ . "/pathname/1/index.php";

$dirPath = pathinfo($path, PATHINFO_DIRNAME);
if ( !file_exists($dirPath) && !mkdir($dirPath, 0777, true) ) {
	// @TODO добавьте exception или выброс ошибки
}

if ( file_put_contents($path, $data) === false ) {
	// @TODO добавьте exception или выброс ошибки
}

My-Widget__item {

}