PHP在线检测是否更新并解压覆盖代码

<?php

error_reporting(0);

ob_implicit_flush(true);

$begin = microtime(true);

//检查更新,加载本地版本号

$config = require(__DIR__ . '/config.php');

$server = 'https://www.bang4.cn'; //你的服务器地址

ob_flush();

$versions = json_decode(file_get_contents($server), true);

if (!isset($versions[$config['version']])) {

echo '当前已是最新版本!';

} else {

echo '当前版本：<b>', $config['version'], '</b> 服务器版本：<b>',

$versions[$config['version']]['version'], '</b><br/>';

ob_flush();

//开始下载

$remote_fp = fopen($versions[$config['version']]['url'], 'rb');

if(!is_dir(__DIR__.'/tmp')) mkdir(__DIR__.'/tmp');

$tmp = __DIR__ . '/tmp/' . date('YmdHis') . '.zip';

$local_fp = fopen($tmp, 'wb');

echo '开始下载...<br/>';

ob_flush();

while (!feof($remote_fp)) {

fwrite($local_fp, fread($remote_fp, 512));

}

fclose($remote_fp);

fclose($local_fp);

echo '下载完成,准备解压<br/>';

ob_flush();

require(__DIR__ . '/Zip.php');

$zip = new Zip();

$zip->extra($tmp, __DIR__);

echo '解压完成,准备删除临时文件<br/>';

ob_flush();

//删除补丁包

unlink($tmp);

echo '临时文件删除完毕<br/>';

ob_flush();

//更新本地版本号

$content = file_get_contents(__DIR__.'/config.php');

$content = str_replace($config['version'],$versions[$config['version']]['version'],$content);

file_put_contents(__DIR__.'/config.php',$content);

echo '更新完成!耗时',microtime(true) - $begin,'秒<br/>';

ob_flush();

ob_end_clean();

exit();

}