PHP Retrieve Values from Dynamically Named Form Input Fields

Question

I've setup a form with a table which includes rows from a database. I've used a variable to represent the database record ID as the name for one of the rows like this:

<td><input type="text" name= "<?php echo $recordID; ?>" class="form-control" placeholder="User Notes"></td>

which is working fine and ends up appearing like this in the browser:

<td><input type="text" name= "TSL1406" class="form-control" placeholder="User Notes"></td>

I'm having trouble retrieving the value when the form is submitted. I would normally use something like this:

$input = $_POST['userNotes']

which I've updated to handle the dynamic naming of the inputs like this:

$input = $_POST['.$recordID.'];

but this is returning an empty variable and I can't work out the correct syntax to retrieve the input from the $_POST array with a dynamically named input field?

stackoverflow.com/questions/19975624/… <-- check this you should find a clue here. — hihihihi
– hihihihi, Commented Oct 29, 2017 at 3:52

Mr. bug · Accepted Answer · 2017-10-29 03:08:02Z

1

single quote " ' " means literal, it won't display your variable name just literally .$recordID.. Try using double quotation instead.

$input = $_POST[".$recordID."];

answered Oct 29, 2017 at 3:08

Mr. bug

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1 Comment

user982124 Over a year ago

That didn't work but this did: $input = $_POST["$recordID"]; - i.e. remove the period between the double quote and the variable name

Peter Haberkorn · Accepted Answer · 2017-10-29 03:35:18Z

1

Only $input = $_POST[$recordID]; without quotes?

or you use arrays like:

<input type="text" name= "form[<?php echo $recordID; ?>]" class="form-control" placeholder="User Notes"></td>

and save everything at once

$input = $_POST['form'];

answered Oct 29, 2017 at 3:35

Peter Haberkorn

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Comments

Trac Nguyen · Accepted Answer · 2017-10-29 03:35:10Z

0

Why don't you just simply use $_POST[$recordID]? However there is a better way to get POST variable using filter_input(INPUT_POST, $recordID)

answered Oct 29, 2017 at 3:35

Trac Nguyen

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