本文介绍了$ _POST在PHP中为空的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 我已经阅读了这篇文章中的所有回应 print_r（$ _ POST）; ===>返回空数组 print_r（$ _ SERVER）; Array（[HTTP_HOST] => localhost [HTTP_ACCEPT] => * / * ** [HTTP__CONTENT_TYPE] ** => application / json; charset = UTF-8 [CONTENT_LENGTH] => 942 ** [CONTENT_TYPE] ** => application / x-www -form-urlencoded [PATH] => / usr / local / bin：/ usr / bin：/ bin [SERVER_SIGNATURE] => Apache / 2.2.14 80 [SERVER_SOFTWARE] => Apache / 2.2.14（Ubuntu） [SERVER_NAME] => localhost [SERVER_ADDR] => 127.0.0.1 [SERVER_PORT] => 80 [REMOTE_ADDR] => 127.0.0.1 [DOCUMENT_ROOT] => / var / www [SERVER_ADMIN] => webmaster @ localhost [SCRIPT_FILENAME ] => /var/www/slocation.php [REMOTE_PORT] => 50657 [GATEWAY_INTERFACE] => CGI / 1.1 [SERVER_PROTOCOL] => HTTP / 1.1 [REQUEST_METHOD] => POST [QUERY_STRING] => [REQUEST_URI] => /slocation.php [SCRIPT_NAME] => /slocation.php [PHP_SELF] => /slocation.php [REQUEST_TIME] => 1288466907 ） HTTP__CONTENT_TYPE和CONTENT_TYPE有什么区别？ print_r（$ HTTP_RAW_POST_DATA）; ==>返回正确的数据 file_get_contents（'php：// input'）; ======>返回正确的数据。 只有$ _POST失败。 $ url =http：//localhost/slocation.php; $ ch = curl_init（$ url）; curl_setopt（$ ch，CURLOPT_HEADER，1）; curl_setopt（$ ch，CURLOPT_HTTPHEADER，array（'Content-type：application / json; charset = UTF-8'））; curl_setopt（$ ch，CURLOPT_POST，1）; curl_setopt（$ ch，CURLOPT_POSTFIELDS，$ payload）; $ result = curl_exec（$ ch）; UPDATE ::::::::::::::::::::: :::::::::::::::::::::::::::::::::::::: 我找到一个主人此处 如果你看到HTTP__CONTENT_TYPE，它很可能意味着你犯了错误在设置CONTENT-TYPE头字段。很可能，当curl无法识别有效的CONTENT_TYPE值时，错误的值设置为HTTP__CONTENT_TYPE，CONTENT_TYPE采用默认值。 I have gone through all the responses in this postprint_r($_POST); ===> returns empty arrayprint_r($_SERVER); Array ( [HTTP_HOST] => localhost [HTTP_ACCEPT] => */* **[HTTP__CONTENT_TYPE]** => application/json; charset=UTF-8" [CONTENT_LENGTH] => 942 **[CONTENT_TYPE]** => application/x-www-form-urlencoded [PATH] => /usr/local/bin:/usr/bin:/bin [SERVER_SIGNATURE] => Apache/2.2.14 (Ubuntu) Server at localhost Port 80 [SERVER_SOFTWARE] => Apache/2.2.14 (Ubuntu) [SERVER_NAME] => localhost [SERVER_ADDR] => 127.0.0.1 [SERVER_PORT] => 80 [REMOTE_ADDR] => 127.0.0.1 [DOCUMENT_ROOT] => /var/www [SERVER_ADMIN] => webmaster@localhost [SCRIPT_FILENAME] => /var/www/slocation.php [REMOTE_PORT] => 50657 [GATEWAY_INTERFACE] => CGI/1.1 [SERVER_PROTOCOL] => HTTP/1.1 [REQUEST_METHOD] => POST [QUERY_STRING] => [REQUEST_URI] => /slocation.php [SCRIPT_NAME] => /slocation.php [PHP_SELF] => /slocation.php [REQUEST_TIME] => 1288466907 )What's the difference between HTTP__CONTENT_TYPE and CONTENT_TYPE?print_r($HTTP_RAW_POST_DATA); ==> returns correct data postedfile_get_contents('php://input'); ======> returns correct data.Only $_POST fails.This is my curl command$url = "http://localhost/slocation.php";$ch = curl_init($url);curl_setopt($ch, CURLOPT_HEADER, 1);curl_setopt ($ch, CURLOPT_HTTPHEADER, array('"Content-type: application/json; charset=UTF-8"'));curl_setopt($ch, CURLOPT_POST, 1);curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);$result = curl_exec($ch);UPDATE::::::::::::::::::::::::::::::::::::::::::::::::::I found a master here 解决方案 To answer my own question, "What's the difference between HTTP__CONTENT_TYPE and CONTENT_TYPE?"If you see "HTTP__CONTENT_TYPE", it most probably means you have made mistake in setting the CONTENT-TYPE header field. Probably, when curl doesn't recognize the valid CONTENT_TYPE value, then the wrong value is set to HTTP__CONTENT_TYPE and CONTENT_TYPE takes a default value. 这篇关于$ _POST在PHP中为空的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！
