PHP自动调取在线壁纸作为网站背景

<?php/*
功能：自动调取壁纸作为网站背景
开发时间:2017年7月4日
应用案例:https://www.68xi.cn/search/
分享三个在线壁纸调用接口
tags http://cdn.apc.360.cn/index.php?c=WallPaper&a=getAllCategoriesV2&from=360chrome
new http://wallpaper.apc.360.cn/index.php?c=WallPaper&a=getAppsByOrder&order=create_time&start=【0开始】&count=【加载数】&from=360chrome
专区 http://wallpaper.apc.360.cn/index.php?c=WallPaper&a=getAppsByCategory&cid=【分类ID】&start=【0开始】&count=【加载数】&from=360chrome
*/

@header('Content-Type: application/json; charset=UTF-8');
$number=-1;
$url = 'http://cn.bing.com/HPImageArchive.aspx?format=js&idx=6&n=1';//必应壁纸调取接口
$curl = curl_init();
$httpheader[] = "Accept:/";
$httpheader[] = "Accept-Language:zh-CN,zh;q=0.8";
$httpheader[] = "Connection:close";
curl_setopt($curl, CURLOPT_HTTPHEADER, $httpheader);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_TIMEOUT, 60);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_URL, $url);
$bing_data = curl_exec($curl);
curl_close($curl);

$bing_arr=json_decode($bing_data,true);

if (!empty($bing_arr'images'['url'])) {

    $data['code']=1;
    $data['url']='https://cn.bing.com'.$bing_arr['images'][0]['url'];
    if(checkmobile()==true)$data['url']=str_replace('1920x1080','768x1366',$data['url']);

}else{

    $data['code']=-1;

}

exit(json_encode($data));

function strexists($string, $find) {

    return !(strpos($string, $find) === FALSE);

}

function dstrpos($string, $arr) {

    if(empty($string)) return false;
    foreach((array)$arr as $v) {
            if(strpos($string, $v) !== false) {
                    return true;
            }
    }
    return false;

}

function checkmobile() {

    $useragent = strtolower($_SERVER['HTTP_USER_AGENT']);
    $ualist = array('android', 'midp', 'nokia', 'mobile', 'iphone', 'ipod', 'blackberry', 'windows phone');
    if((dstrpos($useragent, $ualist) || strexists($_SERVER['HTTP_ACCEPT'], "VND.WAP") || strexists($_SERVER['HTTP_VIA'],"wap"))){
            return true;
    }else{
            return false;
    }

}

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