PHP GET problem - no form $_GET data is present - php

Question

I have a simple PHP form which displays inputs with values from a mysql DB and sends the form results to another page which updates a db table based on the GET results:
echo "<table>";
echo "<tr>";
echo " <th>Project No</th>
<th>Customer Name</th>
<th>Description</th>
</tr>";
while($row = mysql_fetch_array($result))
{
echo "<tr>";
echo "<td><input value=" . $row['project_no'] . "></input></td>";
echo "<td><input value='" . $row['cust_name'] . "'></input></td>";
echo "<td><input value='" . $row['description'] . "'></input></td>";
echo "</tr>";
}
echo "</table>";
echo "<input type='submit' value='Update' />";
echo "</form>";
In updateprojects.php when I do:
echo $_GET['project_no'].$_GET['cust_name'].$_GET['description'];
I don't see any values. Why is this?

Answer 1

In the input field you need to specify the parameter name with the "name" attribute.
echo "<tr>";
echo "<td><input name=\"project_no\" value=" . $row['project_no'] . "></input></td>";
echo "<td><input name=\"cust_name\" value='" . $row['cust_name'] . "'></input></td>";
echo "<td><input name=\"description\" value='" . $row['description'] . "'></input></td>";
echo "</tr>";

Answer 2

You are forgetting the input names:
<td><input name='project_no' value=" . $row['project_no'] . "></input></td>
If you don't do this php doesn't know what you mean by 'project_no'. Each input needs a name.

Answer 3

It is because you do not assign names to the input tags:
echo "<td><input name=\"project_no\" value=\"" . $row['project_no'] . \"></input></td>
The above should work.

Answer 4

Your inputs have no name attribute

Answer 5

Since you are creating form inputs with a loop this should work for you (you can't have 2 input fields with same name), just grab an id of row/record from the database too:
echo "<form method='get' action='updateprojects.php'>";
echo "<table>";
echo "<tr>";
echo " <th>Project No</th>
<th>Customer Name</th>
<th>Description</th>
</tr>";
while($row = mysql_fetch_array($result))
{
echo "<tr>";
echo '<td><input value="' . $row['project_no'] .'" name="form['.$row['id'].']['project_no']"/></td>';
echo '<td><input value="' . $row['cust_name'] .'" name="form['.$row['id'].']['cust_name']"/></td>';
echo '<td><input value="' . $row['description'] .'" name="form['.$row['id'].']['description']"/></td>';
echo "</tr>";
}
echo "</table>";
echo '<input type="submit" name="submit" value="Update" />';
echo "</form>";
if(isset($_GET['submit'])){
foreach($_GET['form'] as $id=>$column){
//update your database where id=$id. This is just testing
echo 'Row '.$id .' =>'. $column['project_no'].'-'.$column['cust_name'].'-'.$column['description'];
}
}

Answer 6

You need to add the name="" attribute to your inputs.

Answer 7

Something that has helped me in the past, is to use the Net tab in Firebug and enable the Persist option to see what the browser is actually sending back. In one case, the form had duplicate entries for some for fields, but the second entry wasn't sending the correct values.

Answer 8

Please inform the type of submit, or hidden text. And / or verify that you are returning data from sql query.

Answer 9

It appears to me that you need to have a name="project_no" in you HTML input.