$_POST in php 5.3.5 does not work

Question

I'm working on a page in PHP 5.3.5, and it seems that $_POST doesn't contain the data submitted from my form.

This is the HTML file :

<html>
<body>

<form action="welcome.php" method="post">
Name: <input type="text" name="fname" />
Age: <input type="text" name="age" />
<input type="submit" />
</form>

</body>
</html>

And this is the PHP file:

<html>
<body>

Welcome <?php echo $_POST["fname"]; ?>!<br />
You are <?php echo $_POST["age"]; ?> years old.

</body>
</html>

The problem is that the form values are not passed, so I get output like this:

Welcome !
You are years old.

Instead of this:

Welcome John!
You are 28 years old.

What am I doing wrong?

Are you sure you have POSTed to it? Can you see the POST body with the info in the headers? — alex, Feb 28 '11 at 02:13
if you view source on the welcome.php, do you see the php or just blanks? — , Feb 28 '11 at 02:16
Maybe a small thing like a spelling of your welcome.php file, perhaps. — Franz Noel, May 09 '13 at 20:04

score 5 · Answer 1 · answered Feb 28 '11 at 02:15

5

Try <?php var_dump($_POST); ?> to see what's really in there. There's no way $_POST is broken - it's gonna be something else. Possibly a server setting could be disabling $_POST.

answered Feb 28 '11 at 02:15

Nick Locking

2,147
2
26
42

score 2 · Answer 2 · answered Nov 24 '12 at 14:30

2

It's probably because you have magic_quotes_gpc turned on. You should turn it off: http://www.php.net/manual/en/security.magicquotes.disabling.php

answered Nov 24 '12 at 14:30

Mike Yo

21
1

score 2 · Answer 3 · edited Apr 09 '18 at 13:23

PHP 5.3 is moving away from using global, pre-set variables, like $_POST, to avoid vulnerabilities.

The issue, as I understand it, is that programmers who have never had to use $_POST or $_GET might treat it as any other variable and open themselves up to security threats.

I haven't discovered the "proper" way to retrieve $_POST data yet, but the method I've using seems fairly sanitary.

<?php parse_url(file_get_contents("php://input"), $_POST);

This transfers the parsed HTTP POST string to the $_POST variables

score 2 · Answer 4 · answered Nov 14 '13 at 08:36

2

Have you check your php.ini ?
I broken my post method once that I set post_max_size the same with upload_max_filesize.

I think that post_max_size must less than upload_max_filesize.
Tested with PHP 5.3.3 in RHEL 6.0

answered Nov 14 '13 at 08:36

zx1986

880
2
12
18

score 0 · Answer 5 · answered Feb 17 '13 at 10:44

0

Try to use capitals in POST:

<form action="file.php" method="POST">

Instead of:

<form action="file.php" method="post">

answered Feb 17 '13 at 10:44

Alexander John Nicholson

1

score 0 · Answer 6 · edited Oct 10 '17 at 07:09

0

I also had the same problem.I used windows notepad for editing .php file and accidentally saved the file in Unicode encoding and that was creating the problem. Then I saved it in the UTF-8 encoding, and it worked like a charm. Hope this might help.

edited Oct 10 '17 at 07:09

Zoe

27,060
21
118
148

answered Oct 10 '17 at 05:40

user8750111

1

score 0 · Answer 7 · answered Feb 28 '11 at 02:16

Is your HTML form method se to to POST?

<form method="post" action="process.php">
<fieldset><legend>your data</legend>
<input type="text" name="txtname" id="id_name" />
<input type="text" name="txtage" id="id_age" />
</fieldset>
<button type="submit">OK</button>
</form>

score 0 · Answer 8 · answered Feb 28 '11 at 02:22

0

You have not POSTed, or something is clobbering $_POST.

If you have no mention of $_POST in your code before trying to access them, then you haven't POSTed to your script.

answered Feb 28 '11 at 02:22

alex

479,566
201
878
984

msmafra · Answer 9 · 2011-02-28T02:46:37.717

Here it worked, but in PHP 5.3.1. Try this:

<!doctype html>
<html>
<head>
<title>form</title> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>

<form method="post" action="process.php">
<fieldset><legend>your data</legend>
<input type="text" name="txtname" id="id_name" />
<input type="text" name="txtage" id="id_age" />
</fieldset>
<button type="submit">OK</button>
</form>

</body>
</html>


<?php
if(isset($_POST["txtname"]))
    $txtname = $_POST["txtname"];
else
    unset($txtname);
if(isset($_POST["txtage"]))
    $txtage = $_POST["txtage"];
else
    unset($txtname);
?>
<!doctype html>
<html>
<head>
<title>form</title> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>

<p>Welcome <?=$txtname; ?>!<br />
You are <?=$txtage; ?> years old.</p>
</body>
</html>

$_POST in php 5.3.5 does not work

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