Store dropdown choices as set array elements into specific variables - php

Question

I have the following html:
<form action="" method="get">
<ul>
<li>location
<select name="locationdo">
<option value="tax_cb">Checkbox</option>
<option value="tax_radio">Radio</option>
<option value="tax_dd">Dropdown</option>
</select>
</li>
<li>genre
<select name="genredo">
<option value="tax_cb">Checkbox</option>
<option value="tax_radio">Radio</option>
<option value="tax_dd">Dropdown</option>
</select>
</li>
<li>studio
<select name="studiodo">
<option value="tax_cb">Checkbox</option>
<option value="tax_radio">Radio</option>
<option value="tax_dd">Dropdown</option>
</select>
</li>
</ul>
<p><input type="submit" value="submit" name="submit" /></p>
</form>
What I want is to have array elements from $which_tax_array stored in separate variables based on choices that were made. Hopefully the code will explain better what I want to achive (but it doesn't work as I wanted it to):
if (isset($_GET['submit'])) {
$which_tax_array = array('location', 'genre', 'studio');
$what = array();
foreach ($which_tax_array as $key => $tax_name) {
$what[$tax_name] = $_GET[$tax_name.'do'];
foreach ($what as $tax_term => $display_option) {
if ( in_array($what[$tax_name], $what) ) {
$checkboxes = ','.$tax_term;
} elseif ( in_array($what[$tax_name], $what) ) {
$radios .= ','.$tax_term;;
} elseif ( in_array($what[$tax_name], $what) ) {
$dropdowns .= ','.$tax_term;
}
}
}
}
echo 'cb '.$checkboxes.'<br>';
echo 'radio '.$radios . '<br>';
echo 'dd '.$dropdowns.'<br>';

Answer 1

Not sure what you are trying to do. I see a few possible issues -
(1) you are not closing your foreach ($which_tax_array as $key => $tax_name) until the end, so you are executing your next foreach too early.
(2) you have $checkboxes = ','.$tax_term; instead of $checkboxes .= ','.$tax_term; so you are overwriting your $checkboxes instead of appending.
(3) your if ( in_array($what[$tax_name], $what) ) will aways be true, as you are checking if an array value is in its own array, so all your values will be in $checkboxes. I think you want to check if the value equals tax_cb,tax_radio, or tax_dd.
try something like this-
if (isset($_GET['submit'])) {
$which_tax_array = array('location', 'genre', 'studio');
$what = array();
foreach ($which_tax_array as $key => $tax_name) {
$what[$tax_name] = $_GET[$tax_name.'do'];
}
foreach ($what as $tax_term => $display_option) {
if ($what[$tax_name] == 'tax_cb') {
$checkboxes .= ','.$tax_term;
} elseif ($what[$tax_name] == 'tax_radio') ) {
$radios .= ','.$tax_term;;
} elseif ($what[$tax_name] == 'tax_dd') ) {
$dropdowns .= ','.$tax_term;
}
}
echo 'cb '.$checkboxes.'<br>';
echo 'radio '.$radios . '<br>';
echo 'dd '.$dropdowns.'<br>';
}