Answers for "wordpress post_exists"

check if post id exists wordpress

post_exists(get_the_title($postID)); //returns $postID or 0

php if post exists

if( isset($_POST['fromPerson']) )
{
     $fromPerson = '+from%3A'.$_POST['fromPerson'];
     echo $fromPerson;
}

check if post exists by id wordpress

if ( get_post_status ( $post_id ) ) {
    // do stuff
}