I have a form on my website. I wanted to save to input to txt but when I submit data, the .txt file get larger (bytes increase) but no text shows up,
Here is the code
<div>
<form action="controller.php">
<input name="card" id="card" type="email">
<button type="submit" name="submit" >Submit</button>
</form>
</div>
Here is the .php code
<?php
$card = $_POST['card'];
$file = fopen ('file.txt', "a");
fwrite($file, $card . "\n");
fclose($file);
die(header("Location: ".$_SERVER["HTTP_REFERER"]));
?>
I have a sub domain with the same code and it works perfectly fine.
why is it not working and how do I fix?
I tried to change the id and the type
You have a very simple issue here. Let's see why by trying to do this on your file:
print_r($_POST);
You will see that after posting your form, you have no POST data. Your form is, by default (on your server or PHP configuration) sending the data not using the POST method, but the GET one (your other server probably is setup the opposite way).
To fix this, you can either change your $card variable to:
$card = $_GET['card'];
Or rather, and that would be a better option to make it more clear and avoid problems if you migrate your website on another server/PHP version, you could simply specify the method on your tag:
<form action="controller.php" method="post">
Please, don't forget to secure the data that will be written in this file, malicious users exist and if you keep your code that simple, it might be a serious security issue.
Related
Original:
I am trying to make the PHP get the input that was put into the text box and write it to name.txt. I am also getting an error message that says "Expected tag name. Got '?' instead." on line 6.
<html>
<body>
<p>Enter name here:</p>
<input type="text" id="name"/>
<button onclick="[activate PHP]">Enter</button>
<?php
$fp = fopen('name.txt', 'w');
fwrite($fp, '[name entered]');
fclose($fp);
?>
</body>
</html>
I am not familiar with PHP, so please explain what your fixed code does when you answer.
New:
This was made by #Vlad Gincher. The problem is, the code is not creating a .txt file, which leads me to believe that the PHP is executing as soon as the page loads. Is there a way to activate the PHP when the form is submitted?
<?php
if(isset($_POST["textareaValue"])) {
$fp = fopen('name.txt', 'w');
fwrite($fp, $_POST["textareaValue"]);
fclose($fp);
}
?>
<html>
<body>
<p>Enter name here:</p>
<form method="post">
<input type="text" id="name" name="textareaValue" />
<input type="submit" value="Enter" />
</form>
</body>
</html>
Again, I am inexperienced with PHP, it could be an error of mine.
PHP runs on the server side. After the server finishes, it returns the output to the client. In that point, you can't use PHP, but you can force the client to send another HTTP request so the PHP would be activated.
Here is a code where it runs, checks if the client sent information to the server, and if so, add the information the the file. If not, it does nothing.
I'm using HTML's form element to tell the browser to send the information back to the server using post. Then, I can get the value using PHP's $_POST, and with the name of the input that I want to get the data from (textareaValue)
<?php
if(isset($_POST["textareaValue"])) {
$fp = fopen('name.txt', 'w');
fwrite($fp, $_POST["textareaValue"]);
fclose($fp);
}
?>
<html>
<body>
<p>Enter name here:</p>
<form method="post">
<input type="text" id="name" name="textareaValue" />
<input type="submit" value="Enter" />
</form>
</body>
</html>
When the web page has been rendered (displayed to user), the PHP is finished. PHP cannot interact with a user - for that you need either (a) an HTML form that is submitted to a .php file (even the same one that contains the form), or -- and this is far more popular these days -- javascript with AJAX.
Here is another answer that discusses both:
How can I make, when clicking a button, send an email with the data included from the form?
HTML forms get "submitted" to a back-end PHP file that receives the data from the form fields. Each form field has a name= attribute on the HTML tag -- that becomes the variable name, and the contents of the HTML element becomes the variable's data.
A very similar thing happens with ajax, except that it is more flexible (the HTML form system is very rigid/static), and (most importantly) the web page need not refresh.
I have a form with one text input field:
index.html
<form method="post" action="comment.php">
<a href="javascript:void(0)">
<div class="avatar" style="background:url('img/user4561.jpg') center/cover"></div>
</a>
<input name="comm" type="text"/>
<input type="submit" value="submit"/>
</form>
And here is comment.php in the same directory
<?php
echo $_POST["comm"];
?>
Now the most incredible event. The form data does not get submitted! I get an error:
Notice: Undefined index: comm in 192.168.0.1/comment.php on line 2
I changed comment.php like this:
<?php
if(isset($_POST["comm"])) {
echo "It is set";
} else {
echo "It is not set";
}
?>
and I get:
It is not set
So, I copied the HTML code of the form into another blank webpage. I also changed the action attribute of the form to "192.168.0.1/comment.php". Now I get
It is set
I also tried using GET instead of POST, but I am again in the same conflict.
EDIT: I removed all other files and code, except for the form and its script. The problem persists. You can now read and modify the source code. Go to files.000webhost.com. Use chatstack as the website name and 6RxOkuJ1CIkbNqxKUMGr as the password.
EDIT: I modified the code for the form above to exactly match that in the above given link. I noticed that removing the link from inside the form solves the problem. I have already done this, but this is so weird. According to this post it is totally fine to have other elements inside a <form> element. There are also other parts of my website where I have <div> elements inside a form element and the form is working fine.
What is this? Is it the server or something else?
I am pretty sure the information provided here is not enough. Feel free to ask for any additional information. There is just too much information to write in a post, and I don't know which part of it is relevant.
Open your dev-console in browser.
Go to the network tab. Now you fill in your form and submit. After your comment.php is loaded, you check for the very first row in the network tab (should be the comment.php html document).
When you click on that request it should display you, whether the request was GET or POST and also what data were sent to this document.
You can also try at comment.php var_dump($_REQUEST); to see what data were sent and how it can be accessed.
By this you can see if server all over receives any data. If yes, then you go for an other server like apache2 for testing purpose to look if bug is fixed.
That's how I would to that, but I suspect that by editing your code for the public, you accidentally withheld some information that would solve this simple problem.
It's very unlikely that web-servers like WAMP had passed the testing environment before publishing a new version allthough no data could be procesed by server
I'm new to PHP and seem to have ran into a problem I can't seem to get around.
I have a form on a secure page that creates a PHP file to store a text value. I named this variable $text.
The Form HTML Code:
<form action="upload_title.php" method="post">
<label for="text">Title 1:</label>
<input type="text" name="text" id="text"><br>
<input type="submit" name="submit" value="Submit">
</form>
The upload_title.php then seems to store the text input as $text in filename.php:
<?php
$var_str = var_export($_POST['text'], true);
$var = "<?php\n\n\$text = $var_str;\n\n?>";
file_put_contents('filename.php', $var);
?>
This seems to be functional as the form will generate filename.php, below is an example if I typed Store into the form input and submitted on the webpage.
<?php
$text = 'Store';
?>
Now the issue I'm encountering is not being able to retrieve this stored as a attribute in separate html document, the index.html in my case.
This was my best approach to changing the title attribute of an image:
<a href="upload/1.jpg">
<img src="upload/thumb.jpg" title="<?php include 'filename.php'; echo htmlspecialchars($text); ?>" alt="" class="image0">
</a>
This does not work, but I can see my JQuery detects that this is trying to be populated but does not extract the data from filename.php on the `index.htm' page.
Thank those in advance for your advice and insight, it is sincerely appreciated.
Your issue is probably the fact that you are using an html file instead of a php file, in this case index.html.
Your server is likely not set up by default to process .html files as php so the php does not get executed.
Apart from that it is not a very good way to store your value as when the php does get executed, you introduce a security risk and you use a lot more storage than necessary. You'd better store the value in a database or text file.
I am trying to build a form in HTML that, once submitted, automatically generates a new webpage using data entered into the form.I'm usually a MATLAB and python user, so I tried them first. Matlab would parse the parse the data and save it to a new .txt file, but not a .html file. Python was much the same. After searching, I came across the suggestion to use PHP to create the new page from the form data. (Someone was using php to create user webpages with the users name, email, and a picture. I tried to adapt this to suit my needs, but it is not generating the new page as I thought it would. Instead, it just displays part of the PHP code. This is the form I made:
<form action="htmlData.php" method="post">
Product Name:
<input name="Name" size="20" type="text">
<br><br>
Project Lead Name:
<input name="PLname" size="20" type="text"> <br><br>
Team-members: <br>
<textarea name="Team_members" rows=10 cols=40> </textarea> <br><br>
Product Type: <br>
<input name="Product_Type" size="20" type="text"> <br><br>
Description: <br>
<textarea name="Description" rows=10 cols=40 type="text"> </textarea>
<br>
<br> <br>
<input value="Submit" type="submit" name="formSubmit">
<input value="Reset" type="reset">
<input value="Help" type="button" onclick="window.location.href='problems.html'">
</form>
...And this is the PHP file named htmlData.php:
ob_start();
$Name = $_POST['Name'];
$PLname= $_POST['PLname'];
$Team_members= $_POST['Team_members'];
$Product_type= $_POST['Product_type'];
$Description= $_POST['Description'];
$html = <<<HEREDOC
Product Name: $Name <br>
Project Lead: $PLname <br>
Team Members: $Team_members <br> <br>
Product Type: $Product_type <br>
Description: $Description
HEREDOC;
file_put_contents('newPage.htm', $html);
header()redirect.header('location: newPage.html')
What do I need to change so that once a user clicks submit, a new page is generated from the data and the user is then taken to the newly created page? Is this possible with what I have, or should I looking into using a different language?
It's possible with PHP and Python (perhaps MATLAB too).
Given your PHP code, there are a few small issues. First, the HEREDOC must be ended at the beginning of the line (there can't be any whitespace before the end HEREDOC).
Second, the PHP code to redirect is invalid. Try these changes:
<?php
$Name = $_POST['Name'];
$PLname= $_POST['PLname'];
$Team_members= $_POST['Team_members'];
$Product_type= $_POST['Product_type'];
$Description= $_POST['Description'];
$html = <<<HEREDOC
Product Name: $Name <br>
Project Lead: $PLname <br>
Team Members: $Team_members <br> <br>
Product Type: $Product_type <br>
Description: $Description
HEREDOC;
file_put_contents('newPage.htm', $html);
header('location: newPage.html');
exit;
The next issue you may encounter is that it cannot write to newPage.htm. You may need/want to specify a full path (e.g. /home/yoursite/public_html/files/newPage.htm).
You will need to make sure that directory is writable by the web server (as often the web server runs as a different user than your files are owned by).
Hope that helps.
If it shows a php code, that means that:
1. You dont have php installed,
2. Your http server like Apache installed.
Even if the 2 above conditions were met, the code you have is not a valid PHP code, and it would not work.
You are not yet good enough with PHP, you need to go back and learn the very basics before you try make any dynamic pages.
Instead, it just displays part of the PHP code
Seems like one of the following:
Have you installed PHP on your server?
Is the server configured to pass .php pages to be processed?
It might be worthwile to take a look here as displaying PHP code on the browser means the webserver isn't dealing with it correctly.
Once you think it's installed run phpinfo() see the docs.
You are missing an 'l' in your new file declaration:
file_put_contents('newPage.htm', $html);
Also, try physically creating the newPage.html file and place it in your project directory then see if the page is displayed or not. If this is the case I would check to see if you have PHP installed and if the server is configured to handle post. Usually it is configured to handle post or get but not usually both by default.
While not exactly solving your original problem, I hope I'm not too out of bounds with this:
Your problem is most often solved by using a database in conjunction with a language like PHP. Storing this information in a database after form submit will allow newPage.htm you have to accept GET parameters and dynamically display the corresponding data from the database. Example: newPage.html?id=245 will deliver that ID to the PHP code processing that request. PHP will use that ID to query your database for the proper information and display that to the page. This way you will not have one file for each form submission and the form data can easier to maintain. Check out something like: http://www.freewebmasterhelp.com/tutorials/phpmysql for more information.
Another aspect to keep in mind is security. Your current code puts direct user input into a file on your server. This is a huge security vulnerability. It is recommended you escape the user input.
If you not need to create new page, in start of your PHP code, remove ob_start(), and add
if(isset($_REQUEST['formSubmit'])){
....
....
}
your page will be created automaticly on submit press.
so I've been fighting with this for a few days, and I just can't seem to make it work. Whenever I press the submit button, the browser should send the post variables to write.php, but instead, it just redirects back to the website homepage, or the Document Root. This should be really, really simple, and I've done it before, but now it doesn't work for me. What I want to know is if this is a problem with my webserver setup, or PHP, or just a stupid mistake on my part. It's just a simple HTML form, not really special, so here's the form itself, in index.php:
<p style="font-size:13px">
<?php
$rp = fopen('mainlog.txt', 'r');
while(!feof($rp))
{
$read = fgets($rp);
echo($read).('<br/>');
}
fclose($rp);
?>
</p>
<form action="write.php" method="post">
Name: <input type="text" name="user" /><br/>
Changes:<br/>
<textarea cols="70" rows="8" name="change" style="background-color:#555;color:#ccc;font-family:verdana,arial,helvetica,sans-serif;font-size:13px"></textarea><br/>
<input type="submit" value="Add Entry"/>
</form>
And here's where it send to, in write.php:
<?php
$fp = fopen('mainlog.txt', 'a');
$wr1 = $_POST['change'];
#$my_t = getdate(date("g"));
date_default_timezone_set("America/New_York");
$date = date("n").('/').date("d").('/').date("Y").(', ').date("g").(':').date("i").(':').date("s");
$who = $_POST['user'];
$write = $date.(' by ').$who.('
').$wr1.('
');
fwrite($fp, $write);
fclose($fp);
header('Location: http://www.zennixstudios.com/first/chlog/');
?>
I have tried this both on my Apache 2.2 dedicated server with PHP 5 on FreeBSD8.2, and on XAMPP for Windows, with the same results. I have a suspicion that it may have something to do with PHP, specifically PHP include(), because I have several of those on this page, and when I put this on a friend's computer with XAMPP, but without the included files, the include()s just put errors on the screen, but the HTML form suddenly works fine. So, are there any known conflicts with HTML forms and certain PHP functions?
Other Notes:
The code shown above for index.php is within the main page div, but if you want the whole page source just ask.
I'm pretty sure the error isn't in write.php, because I KNOW that the browser never sends anything to it, because it would at least put the date in mainlog.txt.
If you want to see what this looks like in context, go to http://www.zennixstudios.com/first/chlog/
Thanks,
Chaos
Here is your problem:
<table align="right"><tr><td align="right"><form action="/" method="post">Username: <input action="login.php" type="text" name="uname"/><br/>Password: <input type="password" name="passwd"/><br/><input type="submit" value="Login" align="right"/></td></tr></table>
You never closed the form up in your header for the username and password, so your <form action="/" method="post"> is being used for pretty much the entire page and your write.php form action is being ignored because a form is already, technically, open. You'll need to close the form in your header for the rest of your page to work properly.
To reiterate: nothing is being redirected, you're actually posting all the data from both 'forms' to the location / as specified.