标签： 图片

<?php
	$cache_path = ‘bing_cache’;
	$time_file = $cache_path.‘/time.txt’;
	$url_file = $cache_path.‘/url.txt’;
	$copyright_file = $cache_path.‘/copyright.txt’;
	$day = $_GET[‘day’];
	$size = $_GET[‘size’];
	$type = $_GET[‘type’];
	$resolution = $_GET[‘resolution’];
	$url = ‘https://www.bing.com/HPImageArchive.aspx?format=js&idx=’.$day.‘&n=1’;
	# 文件/夹不存在就创建
	if(!is_dir($cache_path)){
	mkdir($cache_path,0755);
	}
	if(!is_file($time_file)){
	touch($time_file);
	}
	if(!is_file($url_file)){
	touch($url_file);
	}
	if(!is_file($copyright_file)){
	touch($copyright_file);
	}
	# 从’time.txt’读取时间戳，判断和上一次访问的间隔在60秒内就直接从本地’url.txt’读取图片url
	$old_time = intval(file_get_contents($time_file));
	if (time()-$old_time>60){
	$time_file_open = fopen ($time_file,‘w+’);
	fwrite($time_file_open,time());
	fclose($time_file_open);
	$urlbase = get_data(false)[0];
	$copyright = get_data(false)[1];
	}else{
	$urlbase = get_data(true)[0];
	$copyright = get_data(true)[1];
	}
	switch ($type){
	# 从$type判断类型，返回
	case ‘text’:
	global $copyright;
	echo $copyright;
	break;
	case ‘url’:
	echo get_url(‘url’);
	break;
	default:
	header(“status: 302”);
	header(“Location: “.get_url(‘pic’));
	}
	function get_url($type){
	# 从$size或$resolution判断图片的分辨率
	global $urlbase,$size,$resolution;
	if ($resolution){
	$urlsize = ‘_’.$resolution.‘.jpg’;
	}else{
	switch ($size)
	{
	case ‘2k’:
	case ‘1440’:
	case ‘2560’:
	$urlsize = ‘_UHD.jpg’;
	break;
	case 1920:
	$urlsize = ‘_1920x1080.jpg’;
	break;
	case 1080:
	$urlsize = ‘_1080x1920.jpg’;
	break;
	default:
	$urlsize = ‘_1920x1080.jpg’;
	}
	}
	$imgurl = ‘https://www.bing.com’.$urlbase.$urlsize;
	return $imgurl;
	}
	function get_data($islocal){
	# $islocal为true时从本地读取，否则从bing的api请求获得
	global $time_file,$url_file,$copyright_file,$url;
	if ($islocal){
	$urlbase = file_get_contents($url_file);
	$copyright = file_get_contents($copyright_file);
	}else{
	$json = json_decode(file_get_contents($url),true);
	$urlbase = $json[‘images’][0][‘urlbase’];
	$copyright = $json[‘images’][0][‘copyright’];
	$url_file_open = fopen($url_file,‘w+’);
	fwrite($url_file_open,$urlbase);
	fclose($url_file_open);
	$copyright_file_open = fopen($copyright_file,‘w+’);
	fwrite($copyright_file_open,$copyright);
	fclose($copyright_file_open);
	}
	return array($urlbase,$copyright);
	}
	?>

参数
day 时间，0是今天，1是前1天，2是前2天，最多前7天。默认今天。
type pic,url,text 分别是直接跳转图像链接，展示链接，展示图片描述（版权）
size 图片大小，2k,1920,1080，分别是2K(也可能4k)，1920×1080，1080×1920
resolution 具体的分辨率，会覆盖size参数，具体的分辨率，已知有以下这些
#横屏
1920×1200
1920×1080
1366×768
1280×768
1024×768
800×600
800×480
#竖屏
1080×1920
768×1366
768×1280
720×1280
640×480
480×800
400×240
320×240
240×320
#正方形(可以作为头像之类的)
320×320
240×240

例如：(只显示1080大小的链接）
http://www.yunflare.cn/bingapi/index.php?size=1080&type=url