If you want to target meta key vendor
and meta value farsi
, you need to pass the following meta_query
arguments:
$args = array(
'posts_per_page' => -1,
'post_type' => 'product',
'meta_query' => array(
array(
'key' => 'vendor',
'value' => 'farsi',
)
)
);
Also to note, as Jiten highlighted, your meta key may be wpcf-vendor
.