<?php
	
	function save_file($url, $name, $dir) {
		$full_path = $dir . $name;
		
		$response = file_get_contents($url);
		
		$handle = fopen($full_path, "w+");
			
		fwrite($handle, $response);
		
		fclose($handle);
		
		return file_exists($full_path);
	}
	
	# ÖRNEK KULLANIM
	
	$save_file = save_file("https://www.r10.net/images/misc/vbulletin3_logo_white.gif", "vbulletin3_logo_white.gif", str_replace("\\", "/", dirname(realpath(__FILE__))));
	
	var_dump($save_file); ## dönen değer "true" veya "false" olacaktır. (bool cinsinden)