下载时重命名文件 php

//给a标签添加点击事件
<a onclick="downnew('<?php echo isset($value['uri'])?$value['uri']:''; ?>','<?php echo isset($value['title'])?$value['title']:''; ?>');">下载</a>


<script type="text/javascript">
/**
 * 下载时重命名
 */
function downnew(url,title){
	url   = encodeURI(url);
	title = encodeURI(title);
	//jq点击事件调用php方法
	window.location.href="../Resource/readfiles?url="+url+"&title="+title;
};

</script>

<?php

public function readfiles(){
		$path      = $_GET['url'];
		$info = pathinfo($path , PATHINFO_EXTENSION);
		$file_name = $_GET['title'].'.'.$info; //这里重命名
		header("Content-type: application/octet-stream");
		header('Content-Disposition: attachment; filename="'.$file_name.'"'); 
		ob_end_clean();
		readfile($path);
		exit();
}

?>