Well i heard that Value attribute is just a default attribute, so i used the value attribute to fetch the data from a previous file and fill form area.
But it is only using value of value attribute() to store in DB. For Example if the customer changes value passed in the text box(passed by value attribute) and submit the information the changed value is not being stored in DB rather value stored in value attribute is getting saved.
I am passing values to a html form, from a previous PHP page like this..
<form action="parentid1.php" method="post">
<label>id:</label>
<input type="text" name="id" value="<?php echo htmlspecialchars($_GET['id']) ?>" size="50"/> <br/>
<label>Name:</label>
<input type="text" name="name" value="<?php echo htmlspecialchars($_GET['name']) ?>" size="50"/><br/>
<input type="submit" value="submit" /><br/>
</form>
In my next file i am trying yo update the values declared like this:
$value = mysql_real_escape_string($_POST['id']);
$value1 = mysql_real_escape_string($_POST['name']);
$sql = "UPDATE table SET name='$value1'WHERE doi ='$value'";
Here is the case:
A form structure of text type will be formed with some value already in it.
Now customer wants to change the data in form box changes it and submits it but the changed is not being saved in the DB rather the previous value is only saved.
What am i doing wrong?
It seems that you mix GET and POST data. In html you use GEt but in php POST.
If you don't know about GET or POST try to use $_REQUEST.
$sql = "UPDATE `table` SET `name`='".$value1."' WHERE `doi`='".$value."'";
$result = mysql_query($sql) or die(mysql_error());
and show your mysql error.
Related
I have the following code snippet of my fields I have in my form:
<input id="username" type="text" placeholder="E-mail Address" value="" name="username"></input>
This is what I have in my input field. Is there anybody who will tell me how to get input values to the field using a url? e.g https://mysite?username=ken and it will show "ken" in the input field?
In your HTML, add the input field like this:
<input type="text" name="username" value="<?php echo htmlspecialchars($_GET['username']); ?>" />
Basically, the value attribute of the text field needs to be set to:
<?php echo $_GET['username']; ?>
The code right above this is how you would output a get variable in php whether you are putting it in a text field or not.
To access get variables, always use:
$_GET['variable_name'];
Then you can assign it to variables or pass it as a function parameter.
**However, I strongly do not recommend passing sensitive information like usernames and passwords through GET variables. **
First off, users could change the URL hence changing the variable. They could also accidentally share the URL with someone and that could give someone else access to their account. I would recommend that you create a cookie on their machine that is set to a random ID, and then in a MySQL database, associate that ID with a username so that you know the user can't accidentally share their account or change their username through the URL.
You can do it like this, make an isset in your php form input that can catch your ken variable from GET post, never forget the method="get" inside the form tag and if you are planning on submitting on the same page you can use action="<?php echo $_SERVER['PHP_SELF']; ?>" inside your form tag.. hope this helps, here is your code.. ^_^
<form id="form" name="form" method="get" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<fieldset>
<p>Input</p>
<div>
<input type="text" name="nameoffield" id="nameoffield" value="<?php if(isset($_GET['ken'])){echo $_GET['ken'];} ?>"> <br />
</div>
</fieldset>
<div>
<button type="submit" value="Submit" name="submit">
Submit
</button>
</div>
</form>
The <input> tag and other fields of form must be in a <form>tag.
<form action = "https://mysite" method = "get">
<input id = "username" type = "text" placeholder = "E-mail Address" name = "username" value = "<?php echo $_GET['username']; ?>" />
</form>
In the above code, form tag specifies that the method of submission is 'GET' and the action that will be taken on submission is URL to which your form data will be submitted and processed.
Now assuming that your form is in the same URL to which you are submitting your form, you will get the GET value in the same page (or URL), so in the input text field set the value which is obtained by GET method and use it.
All the GET key-value pairs are stored in an associative array $_GET from which you can access the value of a given key by using that as the index of the array.
e.g. Key is username in this case, so to get the value of the username, $_GET['username'] was used.
I have a set of input boxes and you can add more and more sets of these forms if you click the add more button. In my form I can submit data and I have got it to show up when you reload the page, when the page shows it it also adds a value into a hidden form in case the user updates this information.
However, how can I see all the sets of data which do not have a hidden form value? And all the sets with do have a hidden value so I can do different things to them.
Here is my code:
HTML:
<form>
<div class = "fieldset-1">
<input type="text" id="Name1" name="name[]">
<input type="hidden" id="id1" name="id[]">
</div>
<div class = "fieldset-2">
<input type="text" id="Name2" name="name[]">
<input type="hidden" id="id2" name="id[]">
</div>
</form>
PHP:
$data = $_POST;
extract($data, EXTR_PREFIX_SAME,"br");
//Prints The Variables To Make Sure They Are Correct
print_r($id);
$name = preg_replace("/[^a-zA-Z- ]/", "", $name);
print_r($name);
You have all the post data in a $_POST. It doesn't depend on field's type. The only thing matters — field's name.
The reason why you can't see it with your code is that you do
$name = preg_replace("/[^a-zA-Z- ]/", "", $name);
For what, btw? preg_replace is for string, $name here is an array (cause your form field has a name name[]), so function fails, and you lost your data.
And don't ever use extract, it's considered harmful.
I am try to get the value of the input field with a custom attribute I have created using PHP. This is my code:
<form action="uploadform.php" method="post">
<input type="text" name="email" id="email" mynewattribute="myemail">
<input type="submit" name="submit">
</form>
//uploadform.php
<?php
//I know $name = $_POST['email']; will give me the value but I would like to get the value of the input field with "mynewattribute" and not name. Is it possible?
?>
The web browser doesn't know what to do with your custom attribute, so will simply ignore it. The only data sent when you submit the form is the values of "successful" elements. So your custom data will never be sent, and can never be read by the receiving script.
The best place to put such data is into hidden input fields. One possibility is to use names with square brackets in, which PHP automatically converts into arrays. e.g.
<input type="text" name="email[value]">
<input type="hidden" name="email[magic]" value="true">
Populates an array like this:
$_POST['email']['value'] = '';
$_POST['email']['magic'] = 'true';
I have a created an HTML form where users sign up and input there data into an SQL database. I have then retrieved that data in a webpage where they can view their profile. I have created a page where users can edit there profile by creating a form which updates the value in the SQL database for there user id.
I would like the form to use the current value of the SQL cell as the default for that user to make alterations easier. Example: currently user 7 has their city set as New York, when they visits the edit info page, the city field in the form already hase New York as the default value.
I have no problem getting the SQL info and assigning it to a variable, I just don't understand how to set it as the default value. I am aware of how you set default values for input fields though.
My code:
<?php
$id = $_SESSION["user_id"];
// Create a query for the database
$query = "SELECT full_name FROM users WHERE id = $id LIMIT 1";
// Get a response from the database by sending the connection
// and the query
$response = #mysqli_query($dbc, $query);
// If the query executed properly proceed
if($response){
while($row = mysqli_fetch_array($response)){
echo $row['full_name'];
echo mysqli_error();
}
}
?>
<input type="text" name="aboutme" defualt="<?php echo $row['aboutme'] ?>" >
There's no default value for html input.
Input can has value, using attribute value:
<input type="text" name="some_name" value="Some value" />
In your case it's
<input type="text" name="aboutme" value="<?php echo $row['aboutme']?> />
Input can also has placeholder - some value that is present in an input, but erased when user starts to edit input's content:
<input type="text" name="aboutme" value="<?php echo $row['aboutme']?> placeholder="some value" />
How about
<?php
$id = $_SESSION["user_id"];
// Create a query for the database
$query = "SELECT full_name FROM users WHERE id = $id LIMIT 1";
// Get a response from the database by sending the connection
// and the query
$response = #mysqli_query($dbc, $query);
// If the query executed properly proceed
if($response){
while($row = mysqli_fetch_array($response)){
echo $row['full_name'];
?>
<input type="text" name="aboutme" value="<?php echo $row['aboutme'] ?>" >
<?php
echo mysqli_error();
}
}
?>
And here is a good example http://www.w3schools.com/php/showphpfile.asp?filename=demo_db_select_pdo
Neither of the answers worked and upon further research and trial and error I created a solution.
I changed the value that was store in the array to just be a normal php variable:
$aboutme = $row['aboutme'];
I then called that variable using the following code:
<input type="text" name="aboutme" value="<?php echo htmlspecialchars($aboutme); ?>" >
Thanks for your help.
I hope you find my answer useful.
Why don't you try using it as a place holder? This will provide editable text.
<input type="text" name="aboutme" placeholder="<?php echo $row['aboutme'];" />
i have a page where i am getting the ques id and insert it in the database for that i am doing
url: */faq/faq_question_sol.php?ques= 62*
this ( $selected_ques= ($_GET['ques']); ) is working properly in the *faq_question_sol.php* but the *answer_submit_process.php* does not recognize it
my form
<form id="post-form" class="post-form" method="POST" action="answer_submit_process.php">
<input id="submit-button" type="submit" tabindex="120" name="submitbutton" value="Post Your Answer" />
</form>
and the *answer_submit_process.php* is
if(isset($_POST['submitbutton'])){
$userid = $_SESSION['userid']; // i have already started the session
$selected_ques= ($_GET['ques']);
$content = $_POST["content"] ;
$query="INSERT INTO `formanswer`( `user_id`,`questionid`,`content` ) VALUES ('{$userid}','{$selected_ques}','{$my_html}' ) ";
$result=mysql_query($query);
}
Quickest solution would be saving the value of $_GET['ques'] on a hidden field of the form and thus make it accessible in answer_submit_process.php.
Something like this:
if (isset($_GET['ques'])){
echo '<input type="hidden" name="ques" value="'.$_GET['ques'].'">';
}
And in answer_submit_process page the value could easily accessed by $_POST['ques']..
If you are sending via a form POST, then the variable from which you can get data is $_POST instead of $_GET.
Anyway, i wasn´t able to find any field relating to the ques variable on your form, where are they?
Add <input type="hidden" name="ques" value="<?php echo $_GET['ques'] ?>"/> to your form to temporarily store the variable, and then use the variable $_POST['ques'] in place of $_GET['ques'] in the processing page.
Alternatively, you could change the form action to answer_submit_process.php?ques=<?php echo $_GET['ques']; ?>.