Saving custom taxonomies to post as checkbox on frontend

Question

I am trying to save custom taxonomies by choosing checkboxes. Normally if it is selectbox, there is no problem. But when I use checkboxes to choose terms it doesn't save. I am suspected that it is an array problem but I could not solve. I request your very kind help. Sorry my bad English. Thank you.

Here is the part to add the post; `

// ADD THE FORM INPUT TO $new_post ARRAY
$new_post = array(
'post_title'        =>  $title,
'post_category'     =>  array($_POST['cat']),  // Usable for custom taxonomies too  
'post_status'       =>  'publish',           // Choose: publish, preview, future, draft, etc.
'post_type'         =>  'post',  //'post',page' or use a custom post type if you want to
'tax_input'         =>  array( 'genre' => array($_POST['genre']) )  // support for custom taxonomies.   
);

`

And This is saving the post,

//SAVE THE POST $pid = wp_insert_post($new_post, $wperror); wp_set_post_terms($pid,array($_POST['genre']),'genre',true);

The code below is for my custom taxonomy, genre will be something like music type. `

<?php
$genres = get_terms('genre', 'orderby=id&hide_empty=0');
$counter = 0;
foreach ($genres as $genre) {
$counter++;
$option = '<input type="checkbox" name="genre[]" id="'.$genre->name.'" value="'.$genre->name.'">';
$option .= '<label for="genre">'.$genre->name.'</label>';
echo $option;
}
?>

`

Answer 1

Change the value of each checkbox to term slug instead of name, and change

wp_set_post_terms($pid,array($_POST['genre']),'gen re',true);

To

 wp_set_post_terms($pid,(array)$_POST['genre'],'gen re',true);