I can display first name, last name and the instrument they borrowed. There is a drop down if they want to change the instrument they borrowed. Why is my code not changing the instrument that the person is changing? What could be wrong in this code? Please help. I know my code is not agreeable to sql securement, this is just an activity. database
<html>
<head>
</head>
<body>
<form method="post">
<?php
$con=mysqli_connect("localhost","root","","borrow");
$q="SELECT students.studentid,students.studfname,students.studlname,instruments.instrumentname, instruments.instrumentid from students INNER JOIN student_instrument ON students.studentid=student_instrument.id INNER JOIN instruments ON student_instrument.checkoutdate=instruments.dateacquired";
//SELECT students.studentid,instruments.instrumentid,students.studfname,students.studlname,instruments.instrumentname from
//students INNER JOIN instruments ON students.studentid=instruments.instrumentid
$t="SELECT instrumentname from instruments where dateacquired='avail'";
$r=mysqli_query($con,$q);
$e=mysqli_query($con,$t);
while($result=mysqli_fetch_array($r)){
$id=$result['instrumentid'];
$studfname=$result['studfname'];
$studlname=$result['studlname'];
$instrumentname=$result['instrumentname'];
echo $studfname." ".$studlname." ".$instrumentname." ";
echo '<input type="hidden" name="id" value='.$id.'>';
echo '<select name="inst">';
while($f=mysqli_fetch_array($e)){
$avail=$f['instrumentname'];
echo '<option>'.$avail.'</option>';
}
echo '</select>';
echo '<input type="submit" value="submit" name="submit"><br>';
}
?>
</form>
<?php
if(isset($_POST['submit'])){
$id=$_POST['id'];
$inst=$_POST['inst'];
$p="UPDATE instruments SET instrumentname='$inst' WHERE id='$id'";
$q=mysqli_query($con,$p);
if($q){
header('location:student.php');
}
}
?>
</body>
</html>
Check the generated HTML code and look for the <form> and </form> tag. Currently you have a form similar like this:
<form action="post">
<input type="hidden" name="id" value="5" />
<input type="submit" />
<input type="hidden" name="id" value="8" />
<input type="submit" />
<input type="hidden" name="id" value="9" />
<input type="submit" />
<input type="hidden" name="id" value="11" />
<input type="submit" />
<input type="hidden" name="id" value="21" />
<input type="submit" />
</form>
You generate only one form. When you submit that form you will send all the ids on the same field name "id". This means only the last id will be stored in $_POST['id']. This explains the "the last row is updated, not the first one".
To fix your problem you have to create individual forms so they will look similar to this:
<form action="post">
<input type="hidden" name="id" value="5" />
<input type="submit" />
</form>
<form action="post">
<input type="hidden" name="id" value="8" />
<input type="submit" />
</form>
<form action="post">
<input type="hidden" name="id" value="9" />
<input type="submit" />
</form>
<form action="post">
<input type="hidden" name="id" value="11" />
<input type="submit" />
</form>
<form action="post">
<input type="hidden" name="id" value="21" />
<input type="submit" />
</form>
So opening and closing the form must be happening inside the while loop.
Related
I am working on a php situation that i have. What it should do is like. each product has a unique id value. if the product id is posted throught submit button, A count action should be activited to count the number of time that product id is posted, so increment.
I hope i exposed the situaation clearly. This is the way i thought doing it, but can't get it work:
<?php
if (isset($_POST['submit'])) {
$do = count($_POST['id']);
echo $do;
if ($do > 1)
{
$i= $do+1;
echo $i;
}
}
?>
<!DOCTYPE HTML>
<html>
<head>
<title>test</title>
</head>
<body>
<div class="holder">
<div class="im">
<img src="session-test/images/orange-juice.jpg" />
<p>bestorange-juice</p>
<form method="post" action="sessiontest.php">
<input type="hidden" id="id" name="id" value="2" />
<input type="hidden" id="price" name="price" value="25" />
<input type="submit" value="send value" name="submit" id="submit" />
</form>
</div>
<div class="im">
<img src="session-test/images/milkshake.jpg" />
<p>bestorange-juice</p>
<form method="post" action="sessiontest.php">
<input type="hidden" id="id" name="id" value="3" />
<input type="hidden" id="prrice" name="price" value="1" />
<!--<input type="text" id="prodQty" name="prodQty" value="1" size="1"/>-->
<input type="submit" value="send value" name="submit" id="submit" />
</form>
</div>
</div>
</body>
</html>
If I assume the value in the hidden input #id is the times users vote the product:
if (isset($_POST['submit'])) {
$do = count($_POST['id']);
echo $do++;
}
If I assume it incorrectly I don't understand what you want to do, sincerly.
In this page : page.php?id=value
I've this html's code:
<form action="" method="get">
<input type="text" name="key" />
<input type="submit" name="send />
</form>
It's redirect me to: page.php?key=value , i want to redirect to: page.php?id=value&key=value , how i can do it? I must redirect it to this page with PHP ?
simply,
<form action="page.php" method="get">
<input type="hidden" name="id" value="<?php echo $value ?>">
<input type="text" name="key" />
<input type="submit" name="send" />
</form>
You can have the id as a hidden input in your form
<form action="" method="get">
<input type="hidden" value="<?php echo $my_id; /*Suppose this variable contain your value */ ?>" name="id" />
<input type="text" name="key" />
<input type="submit" name="send" />
</form>
put everything you want on the next page in your form:
<form action="page.php" method="get">
<input type="text" name="id" value="<?php echo $_REQUEST['id'];?>" />
<input type="text" name="key" />
<input type="submit" name="send />
</form>
Really though, you should be using POST to send data, and the above code is NOT secure (allows anything in a url to easily end up in a form that could create some sql injection or XSS type issues.
You need to have the form's action set to the page you want it to submit to. If it is blank it will just submit to the same page.
<form action="page.php?id=value&key=value" method="get">
<input type="text" name="key" />
<input type="submit" name="send />
</form>
I have to submit this form to a payment processing gateway on my PHP page. All the credit card payment information will be taken on the next screen but the gateway needs the "HostedKey" and "Gateway_ID" need to be invisible from public code view as well.
<form action="nextpage.php" method ="POST" target="_blank">
Patient Account Number:
<input type="text" name="CustRefID" id="CustRefID">
<input type="hidden" name="HostedKey" id="HostedKey" value="ZZZZZZ" />
<input type="hidden" name="Gateway_ID" id="Gateway_ID" value="XXXXXX" />
<input type="hidden" name="IndustryCode" id="IndustryCode" value="2" />
<input type="hidden" name="Amount" id="Amount" value="" />
<input type="hidden" name="RecurringType" id="RecurringType" value="N" />
<input type="hidden" name="RecurringAmount" id="RecurringAmount" value="" />
<input type="hidden" name="CURL" id="CURL" value="back to my site" />
<input type="hidden" name="AVSRequired" id="AVSRequired" value="Y"/>
<input type="hidden" name="CVV2Required" id="CVV2Required"value="Y"/>
<input type="hidden" name="EmailRequired" id="EmailRequired" value="Y"/>
<input type="hidden" name="PostRspMsg" id="PostRspMsg" value="Y"/>
<input type="hidden" name="SECCode" id="SECCode" value="1" />
<input type="hidden" name="Descriptor" id="Descriptor" value="Online" />
<input type="Submit" name="Submit" id="Submit" value="Pay Online Now" />
</form>
I tried something like this. It hid the Key and ID but the form did not pass on the hidden session variables.
<strong>Patient Account Number: </strong>
<form action="nextpage.php" method"post">
<input type="text" name="CustRefID"/>
<input type="hidden" name="HostedKey" id="HostedKey" value="" />
<input type="hidden" name="Gateway_ID" value="<?php ($Gateway_ID); ?>" />
<input type="hidden" name="HostedKey" value="<?php ($HostedKey); ?>" />
<input type="submit" name="Submit" value="Submit" />
</form>
<?php
if (isset($_POST['Submit']))
{ $_session['CustRefID'] = $_POST['CustRefID'];}
{ $_session['HostedKey'] = $_POST['xxxxxx'];}
{ $_session['Gateway_ID'] = "zzzzzz";}
?>
<strong><? echo $_session['CustRefID'];?></strong>
Any help would be great. My programmer is out sick...
You have repetition in your HTML. Change it to this:
<input type="hidden" name="Gateway_ID" value="<?php ($Gateway_ID); ?>" />
<input type="hidden" name="HostedKey" value="<?php ($HostedKey); ?>" />
2. You didn't specify what POST info should go in the SESSION. Change it to this:
{
$_SESSION['CustRefID'] = $_POST['CustRefID'];
$_SESSION['HostedKey'] = $_POST['HostedKey'];
$_SESSION['Gateway_ID'] = $_POST['HostedKey'];
}
I have several html textareas on my site. Each has a submit button. When a user types in one of the textareas i need to know which textarea this is. These textareas are each assigned a number taken from a mysql database. I can get the numbers out of the database, but how can I make it so that when a user types in a textarea and clicks submit the submit form knows which textarea this is. Please ask to clarify if needed. I tried my best to explain the problem. thanks.
p.s. the submit button just performs a mysql set values query. I'm using php on my site.
for example: a textarea is assigned '3.' When i submit this form i need 3 to be sent into my mysql set values query.
Use a hidden input to store a reference for each form
<input type="hidden" name="database_reference" value="<?php echo $dbId; ?>" />
Then when you submit the form $_POST['database_reference'] gives you the database id.
<input type="hidden" value="5" name="which_one" />
so for example
<form method="post" action="">
<textearea name="text"></textarea>
<input type="hidden" value="1" name="which_one" />
<input type="button" />
</form>
<form method="post" action="">
<textearea name="text"></textarea>
<input type="hidden" value="2" name="which_one" />
<input type="button" />
</form>
<form method="post" action="">
<textearea name="text"></textarea>
<input type="hidden" value="3" name="which_one" />
<input type="button" />
</form>
<form method="post" action="">
<textearea name="text"></textarea>
<input type="hidden" value="4" name="which_one" />
<input type="button" />
</form>
<form method="post" action="">
<textearea name="text"></textarea>
<input type="hidden" value="5" name="which_one" />
<input type="button" />
</form>
UPDATE:
<?php
if ($_POST){
include("db_connection.php");
mysql_query("UPDATE table SET column = '".mysql_real_escape_string($_POST['text'])."' WHERE value = ".intval($_POST['value']));
echo "done";
}
?>
<form method="post" action="">
<textearea name="text"></textarea>
<input type="hidden" value="1" name="which_one" />
<input type="button" />
</form>
<form method="post" action="">
<textearea name="text"></textarea>
<input type="hidden" value="2" name="which_one" />
<input type="button" />
</form>
<form method="post" action="">
<textearea name="text"></textarea>
<input type="hidden" value="3" name="which_one" />
<input type="button" />
</form>
<form method="post" action="">
<textearea name="text"></textarea>
<input type="hidden" value="4" name="which_one" />
<input type="button" />
</form>
<form method="post" action="">
<textearea name="text"></textarea>
<input type="hidden" value="5" name="which_one" />
<input type="button" />
</form>
Assuming you have multiple <form></form> tags set up, one for each <textarea>, I would just add a hidden input field in each form. For example:
<form>
<textarea />
<input type="hidden" value="1" />
<input type="submit" />
</form>
<form>
<textarea />
<input type="hidden" value="2" />
<input type="submit" />
</form>
You can flesh it out from there, but you get the idea.
This is my HTML:
<form method="POST" action="">
<?php
$skillSubCategory = $skills->showSkills(24);
for ($i = 0; $i < count($skillSubCategory); $i++) {
?>
<input type="hidden" name="skillid" value="<?php echo $skillSubCategory[$i]['skill_id']; ?>" />
<?php echo $skillSubCategory[$i]['title']; ?>
<input type="submit" name="add" value="add" /><br />
<?php } ?>
</form>
<?php if (isset($_POST['add'])) {
echo $_POST['skillid'];
} ?>
Resulting source code:
<form method="POST" action="">
<input type="hidden" name="skillid" value="25" />
Animal Grooming
25
<input type="submit" name="add" value="add" /><br />
<input type="hidden" name="skillid" value="26" />
Dog Trainer
26
<input type="submit" name="add" value="add" /><br />
<input type="hidden" name="skillid" value="27" />
Dog Walking
27
<input type="submit" name="add" value="add" /><br />
<input type="hidden" name="skillid" value="28" />
Vet
28
<input type="submit" name="add" value="add" /><br />
<input type="hidden" name="skillid" value="29" />
Beekeeping
29
<input type="submit" name="add" value="add" /><br />
</form>
What it looks like:
I get number 29 for any button clicked. Any ideas what's wrong? Why the correct number wont show up when i click add?
You can also use the buttons themselves(without changing their values):
<input type="submit" name="skillid[25]" value="add" />
<input type="submit" name="skillid[26]" value="add" />
<input type="submit" name="skillid[27]" value="add" />
To retrieve the submitted value(its not the value in this case, its the first key of the posted array):
if(isset($_POST['skillid']) && is_array($_POST['skillid']))
{
echo key($_POST['skillid'])
}
Because when you have multiple fields with the same name attribute in a form, the last one always takes precedence (with the exception of submit buttons -- the one clicked will be the only one considered). So the last hidden input with the name skillid will always be sent to the server.
When using forms like this, you usually have to use separate forms for each button. Alternatively, change the value attribute of each button and consider that from your PHP code.
Change:
<form method="POST" action="">
to:
<form method="POST" action="<?php echo $_SERVER['PHP_SELF']; ?>">
then change the condition to:
if (isset($_POST['add']) && isset($_POST['skillid'])) {
EDIT: use the <option> tag instead
<select name="skillid">
<option value="25">Animal Grooming</option>
<option value="26">Dog Trainer</option>
...
</select>
Your PHP code now will be:
<form method="POST" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<?php
$skillSubCategory = $skills->showSkills(24);
<select name="skillid">
for ($i = 0; $i < count($skillSubCategory); $i++) { ?>
<option value="<?php echo $skillSubCategory[$i]['skill_id']; ?>"><?php echo $skillSubCategory[$i]['title']; ?></option>
<?php } ?>
</select>
<input type="submit" name="add" value="add" /><br />
</form>
if (isset($_POST['add']) && isset($_POST['skillid'])) {
echo $_POST['skillid'];
} ?>