问题
I think that there is either an error in my code, or my PHP or Apache is set up incorrectly.
When I submit a form with a hidden field in it, I do not get any data in my $_POST array...
When I comment out the hidden field in my code, the POST data is returned correctly...
HTML FORM
<form action='/utils/login.php ' method='POST'>
<table>
<tr>
<td colspan='2'>
Login
</td>
</tr>
<tr>
<td>
Username
</td>
<td>
<input type='text' name='userid' value='' size='12' />
</td>
</tr>
<tr>
<td>
Password
</td>
<td>
<input type='password' name='password' size='12' />
</td>
</tr>
<tr>
<td>
<input type='hidden' name='formtype' value='login' />
</td>
</tr>
<tr>
<td>
<input type='submit' value='Submit' />
</td>
</tr>
</table></form>
Here is the code that is processing it in PHP...
foreach ($_POST as $var => $value) {
echo "$var = $value<br>";
}
I am using PHP 5 and Apache 2.2 on my server.
Any ideas?
EDIT...
I have narrowed it down to this...
$command = $_POST['formtype'];
When I removed the @ sign from my $_POST, I am getting the following error...
Notice: Undefined variable: formtype in C:\webroot\utils\login.php on line 17
If I comment out that line, the POST data is passed into the program without a problem.
回答1:
I would suggest changing the code you are using to display the contents of $_POST
to a single call:
print_r($_POST);
Anytime you are displaying the entire contents of an array, this is better than a loop w/ echo, as it will show every value at every level of the array.
Also, as was mentioned in a comment, make sure you close the form in the html.
回答2:
You never closed your <form>
tag.
And I see now that someone beat me to it by a mile in the comments. Still, this is the right answer.
回答3:
Have you tried taking the hidden input out of the table and placing it right after the opening form tag?
You can also use:
var_dump($_POST);
...to view the post variables.
Also, if any inputs are being dynamically created or might be missing from the POST variables... you can use:
variable = 'default';
if(isset($_Post['variable'])) $variable = $_POST['variable'];
...to dynamically set variables that could be there or not.
回答4:
I changed my form to work with Twig. The changed form was not sending the hidden input value with post. In case someone has the same problem, I solved it by doing the following.
The original line was:
<input hidden name='foo[{{ loop.index }}][id]' value='{{id}}' />
I sold it by making type='hidden':
<input type='hidden' name='foo[{{ loop.index }}][id]' value='{{id}}' />
回答5:
Please try with:
<form action="..." method="post" enctype="application/x-www-form-urlencoded">
来源:https://stackoverflow.com/questions/3234189/no-post-data-being-returned-when-hidden-input-type-is-present