介绍几种PHP获取POST数据技巧
对于一个经验丰富的
(一)表单POST方式提交情况下PHP获取POST数据
$_POST 与 php://input可以取到值,$HTTP_RAW_POST_DATA 为空
$_POST 以关联数组方式组织提交的数据,并对此进行编码处理,如urldecode,甚至编码转换。
php://input 可通过输入流以文件读取方式取得未经处理的POST原始数据
(二)fsockopen提交POST数据下PHP获取POST数据
- $sock = fsockopen("localhost", 80,
$errno, $errstr, 30); - if (!$sock) die("$errstr ($errno)n");
-
$data = "txt=" . urlencode("中") .
"&bar=" . urlencode("Value for Bar"); - fwrite($sock, "POST /posttest/response
.php HTTP/1.0rn"); - fwrite($sock, "Host: localhostrn");
- fwrite($sock, "Content-type: applicat
ion/x-www-form-urlencodedrn"); - fwrite($sock, "Content-length: " .
strlen($data) . "rn"); - fwrite($sock, "Accept: */*rn");
- fwrite($sock, "rn");
- fwrite($sock, "$datarn");
- fwrite($sock, "rn");
- $headers = "";
-
while ($str = trim(fgets($sock,
4096))) - $headers .= "$strn";
- echo "n";
- $body = "";
- while (!feof($sock))
- $body .= fgets($sock, 4096);
- fclose($sock);
- echo $body;
PHP获取POST数据结论:
1. 用php://input可以很便捷的取到原始POST数据
2. $HTTP_RAW_POST_DATA 仅在POST的Content-Type类型不为PHP识别时才有效
如通常通过页面表单提交后的POST数据,不能通过$HTTP_RAW_POST_DATA提取到。因其编码类型属性(enctype属性)为 application/x-www-form-urlencoded、multipart/form-data。
注:即使在页面内显性地改变enctype属性为PHP不可识别的类型,仍无效。因表单提交编码属性是表单限定,不可识别的类型将被认为按默认编码方式提交(即application/x-www-form-urlencoded)
3. $_POST仅当数据按 application/x-www-form-urlencoded 类型提交时才能实现PHP获取POST数据。

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