Get selected value from dropdown menu, from an array? - php

Question

I feel like I am really missing something here. I did some manual customizations on a short (wordpress) script and try to set a <select><option> to "selected" if it has been selected. In order to accomplish this, I tried to find out if the $term->id = similar to the selected option value (which is an ID as well). All good so far, but I cannot seem to get the submitted <select><option>. All it says is 'array'.
Below is my script. Does anyone see what I am doing wrong here? To be clear, it seems to be all about the $_GET["listing_cat"] here. Also when i try to print the $_GET["listing_cat"] within the foreach all it outputs is 'array'.
<form method="get" action="<?php echo trailingslashit( home_url() ); ?>" class="custsearch">
<select name="listing_cat[]">
<option value="1" disabled="disabled" <?php if(!count($_GET)>0 || !$_GET["listing_cat"] ){ echo 'selected="selected"';} ?>>Pls choose</option>
<?php
$cat_args = array(
'orderby' => 'id',
'parent' => 0,
'hide_empty' => false
);
$terms = get_terms('listing_category', $cat_args );
foreach ($terms as $term) {
printf( '<option class="level-0" value="' . $term->term_id .'"');
if($_GET["listing_cat"] == $term->term_id) { echo 'selected="selected"'; }
printf( '>%s</option>', $term->slug, $term->name );
}
?>
</select>
</form>

Answer 1

Ok here is all that i needed.. quite logical;). I put it into a function and needed the in_array() to check:
//category in dropdown
function the_refine_category_ui2() {
$cat_args = array(
'orderby' => 'id',
'parent' => 0,
'hide_empty' => false
);
$terms = get_terms('listing_category', $cat_args );
foreach ($terms as $term) {
printf( '<option class="level-0"');
if( in_array( $term->term_id, $_GET["listing_cat"] )) { echo 'selected ';}
printf('value="' . $term->term_id .'"');
printf( '>%s' . $term->term_id .'</option>', $term->slug, $term->name );
}
}