http请求头
$agentArray=[
//PC端的UserAgent
"safari 5.1 – MAC"=>"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.57 Safari/536.11",
"safari 5.1 – Windows"=>"Mozilla/5.0 (Windows; U; Windows NT 6.1; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50",
"Firefox 38esr"=>"Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0",
"IE 11"=>"Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729; InfoPath.3; rv:11.0) like Gecko",
"IE 9.0"=>"Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0",
"IE 8.0"=>"Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0)",
"IE 7.0"=>"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)",
"IE 6.0"=>"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)",
"Firefox 4.0.1 – MAC"=>"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0.1) Gecko/20100101 Firefox/4.0.1",
"Firefox 4.0.1 – Windows"=>"Mozilla/5.0 (Windows NT 6.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1",
"Opera 11.11 – MAC"=>"Opera/9.80 (Macintosh; Intel Mac OS X 10.6.8; U; en) Presto/2.8.131 Version/11.11",
"Opera 11.11 – Windows"=>"Opera/9.80 (Windows NT 6.1; U; en) Presto/2.8.131 Version/11.11",
"Chrome 17.0 – MAC"=>"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_0) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11",
"傲游（Maxthon）"=>"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Maxthon 2.0)",
"腾讯TT"=>"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; TencentTraveler 4.0)",
"世界之窗（The World） 2.x"=>"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)",
"世界之窗（The World） 3.x"=>"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; The World)",
"360浏览器"=>"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; 360SE)",
"搜狗浏览器 1.x"=>"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; SE 2.X MetaSr 1.0; SE 2.X MetaSr 1.0; .NET CLR 2.0.50727; SE 2.X MetaSr 1.0)",
"Avant"=>"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Avant Browser)",
"Green Browser"=>"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)",
];