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This article mainly introduces how to obtain headers in ajax in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.
1. Front-end page
<!DOCTYPE html>
<html>
<head>
<title>Cross-Browser QRCode generator for Javascript</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=no" />
<script type="text/javascript" src="jquery.min.js"></script>
<script type="text/javascript" src="qrcode.js"></script>
</head>
<body>
<button class="suning">点击</button>
<script type="text/javascript">
$(".suning").click(function(){
$.ajax({
url: 'headers.php',
data: {'key':'123'},//如果需要字符串json方式，请使用JSON.stringify(setting.data)
type: 'POST',
//dataType: 'json',
//contentType: 'application/json',
//processData: true,//为true不会序列化数据
beforeSend: function () {
// layer.load(2);
},
headers: {
"token":'token7758521'//自定义token及值
},
success: function (responseData) {
console.log(responseData);
},
error: function (error) {
console.log(error);
}
});
});
</script>
</body>2.php page
<?php
$arr = get_getallheaders();//获取http头数组
//echo $arr["Token"];//输出Token
var_dump($arr);//输出整个数组
function get_getallheaders() //定义方法
{
foreach ($_SERVER as $name => $value) //循环_SERVER数组
{
if (substr($name, 0, 5) == 'HTTP_') //前5个字符是HTTP_的进入循环
{
$headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
//注释
//substr($name, 5)，从$name第5个字符向后截取
//str_replace('_', ' ',)下划线替换成空格
//strtolower()全部转换为小写
//ucwords()首字母转换为大写
//str_replace(' ', '-',)所有空格替换为-
}
}
return $headers; //返回前key前5个字符是HTTP_的数组
//return $_SERVER; //返回_SERVER数组
}3. Headers returned by the php page
array(11) {
["Cookie"]=>
string(94) "Hm_lvt_f62fa14829605f0d29c05da9c30e045a=1503649309,1503884728; _ga=GA1.1.1091059248.1504832863"
["Accept-Language"]=>
string(14) "zh-CN,zh;q=0.8"
["Accept-Encoding"]=>
string(17) "gzip, deflate, br"
["Referer"]=>
string(62) "http://localhost/DianNaoBengKuiFangYunDuan/qrcode/headers.html"
["Token"]=>//自定义token及值
string(12) "token7758521"
["X-Requested-With"]=>
string(14) "XMLHttpRequest"
["Accept"]=>
string(3) "*/*"
["User-Agent"]=>
string(110) "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36"
["Origin"]=>
string(16) "http://localhost"
["Connection"]=>
string(5) "close"
["Host"]=>
string(9) "localhost"
}4. Original headers partial data
["HTTP_COOKIE"]=> string(94) "Hm_lvt_f62fa14829605f0d29c05da9c30e045a=1503649309,1503884728; _ga=GA1.1.1091059248.1504832863" ["HTTP_ACCEPT_LANGUAGE"]=> string(14) "zh-CN,zh;q=0.8" ["HTTP_ACCEPT_ENCODING"]=> string(17) "gzip, deflate, br" ["HTTP_REFERER"]=> string(62) "http://localhost/DianNaoBengKuiFangYunDuan/qrcode/headers.html" ["HTTP_TOKEN"]=>//自定义token及值 string(12) "token7758521" ["HTTP_X_REQUESTED_WITH"]=> string(14) "XMLHttpRequest" ["HTTP_ACCEPT"]=> string(3) "*/*" ["HTTP_USER_AGENT"]=> string(110) "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36" ["HTTP_ORIGIN"]=> string(16) "http://localhost" ["CONTENT_LENGTH"]=> string(1) "7" ["HTTP_CONNECTION"]=> string(5) "close" ["HTTP_HOST"]=> string(9) "localhost"
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