问题描述
我有一个非常大的 html 表单(包含带有行的表，其中包含多个输入)，我需要通过 POST 请求将其提交给 PHP 脚本.问题是某些值没有通过，并且在 PHP 的 $_POST 超全局变量中不存在.
I have a very big html form (containing table with rows, which contain multiple inputs), which i need to submit to PHP script via POST request. The problem is some values don't come through and are absent in PHP's $_POST superglobal.
我检查(使用 Firebug 扩展)这些值实际上是由浏览器发送到服务器的.
I checked (using Firebug extension) that the values are actually sent to server by the browser.
$_POST 被填充，但缺少一些值.
$_POST gets populated, but some values are just missing.
我检查了什么是原始请求:
I checked what is raw request using:
$raw_post = file_get_contents('php://input');并且返回的字符串具有值.它们只是没有被解析为 $_POST 数组.我注意到的奇怪的事情是，似乎 php://input 值在一些长度后被截断，而字符串的其余部分没有通过 $_POST.
and the string returned has the values. They are just not parsed into $_POST array. The strange thing i noticed is, it seems that the php://input values are cut after some length, and rest of the string does not come through to $_POST.
我考虑了 post_max_size 和 memory_limit 并将它们设置为大值:
I thought about post_max_size and memory_limit and set them to large values:
memory_limit = 256M
post_max_size = 150M但根据 php 文档，如果请求大于 post_max_size，$_POST 不应包含任何值.
but according to php documentation $_POST should not contain any values if request made is bigger than post_max_size.
由于表单和请求很大，我不能在这里发布它，但我可以发布我用来调试问题的php脚本:
Due to big size of form and request I cannot post it here, but i can post php script i used to debug the problem:
var_dump($file = file_get_contents('php://input'));
var_dump($_POST);
//... then i parsed the $file
服务器版本:Apache/2.2.9 (Debian)
PHP 版本:PHP 5.3.2-0.dotdeb.2
Server version: Apache/2.2.9 (Debian)
PHP version: PHP 5.3.2-0.dotdeb.2
谁能解释这种奇怪的 PHP 行为的原因，我应该怎么做(更改 php 设置、代码?)在处理表单时使用 $_POST 数组?
Can enyone explain reason of such strange PHP behaviour, and what should i do (change php settings, code?) to use $_POST array while processing form?
要明确的是:不仅缺少值.$_POST 也不包含这些键.
To be clear: not only the values are missing. $_POST does not contain these keys either.
例如原始帖子的片段:
t_dodparam%5B198%5D=&t_dodparam2%5B198%5D=&t_kolejnosc%5B198%5D=199&n_indeks=201&n_wartosc=testtesttestKey 't_dodparam' 在 post 中，它有 key 198.其余参数丢失(ex t_dodparam2 在 post 中，但它没有像 198 这样的键，并且在 $_POST 中没有像 n_wartosc 这样的键)
Key 't_dodparam' is in post and it has key 198. The rest of parameters are missing (e.x. t_dodparam2 is in post, but it has no such key as 198, and there is no such key as n_wartosc in $_POST)
推荐答案
PHP 修改包含空格、点、左方括号等字符的字段以兼容已弃用的 register_globals
PHP modifies fields containing the characters space, dot, open square bracket and others to be compatible with with the deprecated register_globals
您可以在此处的评论中找到很多解决方法:PHP:来自外部来源的变量
you can find a lot of workarounds in the comments here: PHP: Variables From External Sources
例如(POSTer 评论):
For Exampe (comment by POSTer):
<?php
//Function to fix up PHP's messing up POST input containing dots, etc.
function getRealPOST() {
$pairs = explode("&", file_get_contents("php://input"));
$vars = array();
foreach ($pairs as $pair) {
$nv = explode("=", $pair);
$name = urldecode($nv[0]);
$value = urldecode($nv[1]);
$vars[$name] = $value;
}
return $vars;
}
?>
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