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HomeBackend DevelopmentPHP Tutorialpost 数据大小的限制问题

遇到一个问题:往后台post提交数据时,当超过一定大小,就发现后台的post数据为空,后台收不到post数据。

请问是什么原因?是不是因为屏蔽了哪个php函数?还是php.ini的某项设置?


php.ini 中  post_max_size = 64M;


回复讨论(解决方案)

php 5.3.9 以后还有个数据项数的限制

php 5.3.9 以后还有个数据项数的限制



请问是哪个数据项限制?

post 表单控件数

post 表单控件数




是  max_file_uploads 么?

你有上?文件的??
?有一?upload_max_filesize 需要?

你有上?文件的??
?有一?upload_max_filesize 需要?




upload_max_filesize = 30M
max_file_uploads = 500
 post_max_size = 64M; 

这个设置按道理是可以满足一般post数据提交。

是的,但你的??有多大呢?

你post的数据有多大,print_r($_POST); 看看。

你post的数据有多大,print_r($_POST); 看看。




echo print_r($_POST);

输出结果


Array
(
)
1


很奇怪的输出。

print_r($_POST);

print_r($_POST);



输出结果显示,没有提交的那个数据过大的post变量。
单独测试了一下,数据如果超过 64999,就无法正常提交,小于这个数据,后台能收到。

另外,这个数据过大,不影响别的post数据。

print_r($_POST);
打印出空数组,表示你没有用 post 方式提交
或是你在 php.ini 禁用了 post 提交方式

如果是 post 失败(数据超出允许范围)则打印出的是什么都没有

print_r($_POST);
打印出空数组,表示你没有用 post 方式提交
或是你在 php.ini 禁用了 post 提交方式

如果是 post 失败(数据超出允许范围)则打印出的是什么都没有



好像是被限制了单个post数据的大小,但是,不知道是在php.ini里面被限制的还是哪里,网上搜索的相关条件限制都无法解决这个问题。

你看看 echo file_get_contents('php://input'); 的结果

一般出错时都有错误信息,你也不去看看

查到原因了,前些天加了 suhosin 的功能,被这个 suhosin 给限制了。现在的问题变成:怎么配置 suhosin? 
suhosin.post.max_value_length 65000 65000 

搞定了,在php.ini里面添加 suhosin 的设置

suhosin.post.max_value_length = 4194304
suhosin.post.max_vars = 20000
suhosin.request.max_vars=2000

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