<?php

$folder1 = "C:/Users/Administrator/Documents/Visual Studio 2015/Projects/vb-china/vb-china/";
$folder2 = "Z:/vb-china/";

$subdirs = ['Content','Scripts','Views'];


# 只需要设置上面的3项，下面的就不用设置了

$files_dict_seri = __DIR__.'/files_dict.seri';

//先做互通有无并初始化seri
$filenames1_new = get_filenames($folder1);
$filenames2_new = get_filenames($folder2);
$filenames_all_new = array_merge($filenames1_new, $filenames2_new);
$files_dict = [];
foreach ($filenames_all_new as $file) {
	if (!in_array($file, $filenames1_new)) {
		mycopy($folder2.$file, $folder1.$file);
	}
	if (!in_array($file, $filenames2_new)) {
		mycopy($folder1.$file, $folder2.$file);
	}
	$files_dict[$file] = filesize($folder1.$file);
}
file_put_contents($files_dict_seri, serialize($files_dict));


$time1 = microtime(true);



foreach (range(1,1000) as $i) {
	usleep(300000);

	$files_dict = unserialize(file_get_contents($files_dict_seri));
	foreach ($files_dict as $file => $size) {   //不存在的删除，存在的对比文件大小
		if (!is_file($folder1.$file)) {
			unlink($folder2.$file);
			print_line("delete: ".$folder1.$file);
			unset($files_dict[$file]);
			file_put_contents($files_dict_seri, serialize($files_dict));
		} elseif (filesize($folder1.$file) != $size) {
			mycopy($folder1.$file, $folder2.$file);
			print_line("modify: ".$folder1.$file);
			$files_dict[$file] = filesize($folder1.$file);
			file_put_contents($files_dict_seri, serialize($files_dict));
		} elseif (!is_file($folder2.$file)) {
			unlink($folder1.$file);
			print_line("delete: ".$folder2.$file);
			unset($files_dict[$file]);
			file_put_contents($files_dict_seri, serialize($files_dict));
		} elseif (filesize($folder2.$file) != $size) {
			mycopy($folder2.$file, $folder1.$file);
			print_line("modify: ".$folder2.$file);
			$files_dict[$file] = filesize($folder2.$file);
			file_put_contents($files_dict_seri, serialize($files_dict));
		}
	}
	print_r('.');

	if ($i%10 == 0) {
		$filenames1_new = get_filenames($folder1);
		$filenames2_new = get_filenames($folder2);

		foreach (array_diff($filenames1_new, array_keys($files_dict)) as $new_file) {   //再添加新文件，并更新记录
			mycopy($folder1.$new_file, $folder2.$new_file);
			print_line("create: ".$folder1.$new_file);
			$files_dict[$new_file] = filesize($folder1.$new_file);
			file_put_contents($files_dict_seri, serialize($files_dict));
		}
		foreach (array_diff($filenames2_new, array_keys($files_dict)) as $new_file) {   //再添加新文件，并更新记录
			mycopy($folder2.$new_file, $folder1.$new_file);
			print_line("create: ".$folder2.$new_file);
			$files_dict[$new_file] = filesize($folder2.$new_file);
			file_put_contents($files_dict_seri, serialize($files_dict));
		}
		print_r('|');
	}
}




$time2 = microtime(true);
echo $time2 - $time1;


function get_filenames($folder)
{
	global $subdirs;
	$filenames = [];
	foreach ($subdirs as $dir) {
		$dir1 = $folder.'/'.$dir;
		foreach (walk($dir1.'/**.*') as $file) {
			$filenames[] = str_replace($folder, '', $file);
		}
	}
	return $filenames;
}

function walk($pattern){
	$files = glob($pattern);
	foreach(array_reverse(glob(dirname($pattern).'/*', GLOB_ONLYDIR|GLOB_NOSORT)) as $dir){
		$files = array_merge(walk($dir.'/'.basename($pattern)), $files);
	}
	return $files;
}

function mycopy($s1,$s2) {
	$path = pathinfo($s2);
	if (!file_exists($path['dirname'])) {
		mkdir($path['dirname'], 0777, true);
	}
	if (!copy($s1,$s2)) {
		echo "copy failed \n";
	}
}

function print_line($str)
{
	print_r("\n");
	print_r($str);
	print_r("\n");
}