edit and update text area in php - mysql

Question

my php function is not working when im add my text area in form. other all input or working. if im add remark(text area) in form edit function cant show text in that remark. other input is visible but i cant save it again
please help me to fined my error
Code before "html"
<?php
function renderForm($id, $vehicle_type, $duration, $amount,$remarks, $error)
{
?>
my HTML form
<form action="" method="post">
<div class="row">
<input type="hidden" name="id" value="<?php echo $id; ?>"/>
<div class="col-lg-4 col-xs-6" class="form-group">
<label>Vehicle Type <span style="color:red;font-size:8px;"><i class="fa fa-asterisk" aria-hidden="true"></i></span></label>
<select name="vehicle_type" class="form-control">
<option <?php echo ($vehicle_type=='Bicycle')?'selected':'' ?>>Bicycle</option>
<option <?php echo ($vehicle_type=='Bike')?'selected':'' ?>>Bike </option>
<option <?php echo ($vehicle_type=='Cars')?'selected':'' ?>>Cars </option>
<option <?php echo ($vehicle_type=='Truck')?'selected':'' ?>>Truck</option>
<option <?php echo ($vehicle_type=='Others')?'selected':'' ?>>Others</option>
</select>
</div>
<div class="col-lg-4 col-xs-6" class="form-group">
<label>Duration </label> <span style="color:red; font-size:8px; "><i class="fa fa-asterisk" aria-hidden="true"></i></span>
<input type="text" value="<?php echo $duration; ?>" name="duration" class="form-control" maxlength="20" placeholder="Eg: 4 Hrs">
</div>
<div class="col-lg-4 col-xs-6" class="form-group">
<label><i class="fa fa-inr" aria-hidden="true"></i> Amount</label> <span style="color:red;font-size:8px;"><i class="fa fa-asterisk" aria-hidden="true"></i></span>
<input type="number" name="amount" value="<?php echo $amount; ?>" class="form-control" placeholder="00">
</div>
</div>
<div class="row">
<div class="col-lg-4 col-xs-6" class="form-group">
<label>Remarks</label>
<textarea class="form-control" name="remarks" <?php echo htmlspecialchars($remarks); ?> rows="3" placeholder="Enter ..."></textarea>
</div>
<div id="butn" class="col-lg-3 col-xs-3">
<button class="myButton" type="submit" name="submit" value="Submit" class="btn btn-block btn-success btn-lg">SAVE</button>
</div>
</div>
</form>
Code after "html"
<?php
}
// connect to the database
include('connection.php');
// check if the form has been submitted. If it has, process the form and save it to the database
if (isset($_POST['submit']))
{
// confirm that the 'id' value is a valid integer before getting the form data
if (is_numeric($_POST['id']))
{
// get form data, making sure it is valid
$id = $_POST['id'];
$vehicle_type = mysql_real_escape_string(htmlspecialchars($_POST['vehicle_type']));
$duration = mysql_real_escape_string(htmlspecialchars($_POST['duration']));
$amount = mysql_real_escape_string(htmlspecialchars($_POST['amount']));
$remarks = mysql_real_escape_string(htmlspecialchars($_POST['remarks']));
if ($vehicle_type=='' || $duration=='' || $amount=='' || $remarks=='')
{
// generate error message
$error = 'ERROR: Please fill in all required fields!';
//error, display form
renderForm($id, $vehicle_type, $duration, $amount, $remarks, $error);
}
else
{
// save the data to the database
mysql_query("UPDATE price_normal SET vehicle_type='$vehicle_type', duration='$duration', amount='$amount', remarks='$remarks', WHERE id='$id'")
or die(mysql_error());
// once saved, redirect back to the view page
header("Location: pnormal.php");
}
}
else
{
// if the 'id' isn't valid, display an error
echo 'Error!';
}
}
else
{
// get the 'id' value from the URL (if it exists), making sure that it is valid (checing that it is numeric/larger than 0)
if (isset($_GET['id']) && is_numeric($_GET['id']) && $_GET['id'] > 0)
{
// query db
$id = $_GET['id'];
$result = mysql_query("SELECT * FROM price_normal WHERE id=$id")
or die(mysql_error());
$row = mysql_fetch_array($result);
// check that the 'id' matches up with a row in the databse
if($row)
{
// get data from db
$vehicle_type = $row['vehicle_type'];
$duration = $row['duration'];
$amount = $row['amount'];
$remarks = $row['remarks'];
// show form
renderForm($id, $vehicle_type, $duration, $amount, $remarks,'');
}
else
// if no match, display result
{
echo "No results!";
}
}
else
// if the 'id' in the URL isn't valid, or if there is no 'id' value, display an error
{
echo 'Error!';
}
}
?>

Answer 1

Take a look at the actual HTML in your browser. You're rendering the "remarks" content as an attribute of the textarea element:
<textarea class="form-control" name="remarks" <?php echo htmlspecialchars($remarks); ?> rows="3" placeholder="Enter ..."></textarea>
It should be the content of that element:
<textarea class="form-control" name="remarks" rows="3" placeholder="Enter ..."><?php echo htmlspecialchars($remarks); ?></textarea>