Help with Array and Post - php

Question

I have this form:
<form action="" method="post">
<label for="color">Color:</label>
<input type="text" style="width: 195px;" name="color" id="color" value="<?php echo $item; ?>">
<input value="Save" type="submit" />
</form>
And the following PHP to capture contents:
if (!empty($_POST['color']) && preg_match('/^#[a-fA-f0-9]{6}/', $_POST['color']) != 0 ) {
$thisarray[] = $_POST['color'];
SetProfileField('usercss', $USER->id, implode(',',$thisarray));
}
How can I add a new field to the Form and then add that to the array to be saved?

Answer 1

You can add new fields to the form if you alter the HTML code. There are many different form elements, see if there is something you need here: http://www.w3schools.com/html/html_forms.asp
You can access the value of each element with $_POST['key'], so to add it to the array you would have to write $thisarray[] = $_POST['key']. Note: Replace key with the actual name of the form element.
Whole Example:
HTML:
<form action="" method="post">
<label for="color">Color:</label>
<input type="text" style="width: 195px;" name="color" id="color" value="<?php echo $item; ?>">
<input name="the_new_element" />
<input value="Save" type="submit" />
</form>
PHP:
if (!empty($_POST['color']) && preg_match('/^#[a-fA-f0-9]{6}/', $_POST['color']) != 0) {
$thisarray[] = $_POST['color'];
$thisarray[] = $_POST['the_new_element'];
SetProfileField('usercss', $USER->id, implode(',',$thisarray));
}
I named the field the_new_element, change this to whatever you want. Of course you should also sanitzie the contents.