教你如何在WordPress发布文章时自定义文章作者名称

<?php




add_action('post_submitbox_misc_actions', 'cus_author_createCustomField');
add_action('save_post', 'cus_author_saveCustomField');

function cus_author_createCustomField() {
	$post_id = get_the_ID();
	if (get_post_type($post_id) != 'post') {
		return;
	}
	
	$value = get_post_meta($post_id, '_custom_author_name', true);
	
	wp_nonce_field('custom_author_nonce' , 'custom_author_nonce');
	?>
    <div class="misc-pub-section misc-pub-section-last dashicons-before dashicons-admin-users">
        <label><b>作者：</b><input type="text" value="<?php echo $value ?>" name="_custom_author_name" /></label>
    </div>
    <?php   
}

function cus_author_saveCustomField($post_id) {
	
	if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
		return;
	}
	
	if (
		!isset($_POST['custom_author_nonce']) ||
		!wp_verify_nonce($_POST['custom_author_nonce'], 'custom_author_nonce')
	) {
		return;
	}
	
	if (!current_user_can('edit_post', $post_id)) {
		return;
	}
	
	if (isset($_POST['_custom_author_name'])) {
		update_post_meta($post_id, '_custom_author_name', sanitize_text_field($_POST['_custom_author_name']));
	} else {
		
		delete_post_meta($post_id, '_custom_author_name');
	}
}

add_filter('the_author','cus_author_the_author');
function cus_author_the_author($author){
    $custom_author = get_post_meta(get_the_ID(), '_custom_author_name');
    if ($custom_author) {
		return $custom_author[0];
	} else {
		return $author;
	}
}