php 页面公共部分 转化为js document.write(); 并由匿名函数包裹

<?php
$handle = fopen("footer.html", "r");   // 输入html文件
$dest = fopen("footer.js", "w");         // 输出js文件
 
if ($handle) {
fwrite($dest, "(function() {\n");
    while (($buffer = fgets($handle, 4096)) !== false) {
        $s = addslashes($buffer);
$line = "\tdocument.write(\"" . rtrim($s, "\r\n") . "\");\n";
fwrite($dest, $line);
    }
fwrite($dest, "}).call();");
    if (!feof($handle)) {
        echo "Error: unexpected fgets() fail\n";
    }
    fclose($handle);
    fclose($dest);
}
?>

<div id="footer">
	<div class="container text-center">
		<div class="copyright">Copyright?2017~2020 
			<a href="http://www.tsinghuadtv.com/" target="_blank">凌讯软件</a> 技术支持
			<a href="http://www.miitbeian.gov.cn" target="_blank">京ICP备13010031号</a>
		</div>
	</div>
</div>

(function() {
document.write("<div id=\"footer\">");
document.write(" <div class=\"container text-center\">");
document.write(" <div class=\"copyright\">Copyright?2017~2020 ");
document.write(" <a href=\"http://www.tsinghuadtv.com/\" target=\"_blank\">凌讯软件</a> 技术支持");
document.write(" <a href=\"http://www.miitbeian.gov.cn\" target=\"_blank\">京ICP备13010031号</a>");
document.write(" </div>");
document.write(" </div>");
document.write("</div>");
}).call();