Ticket #24856: tf-author-widget.php

<?php
/*
Plugin Name: Author Widget
*/


class TF_Author_Widget extends WP_Widget {
        public function __construct() {
                parent::__construct(
                        'th_author_widget',
                        'Site Authors',
                        array( 'description' => __( 'Show Authors from this site in a widget', 'pf-widget' ), ) // Args
                );
        }

        public function form( $instance ) {
                if( isset( $instance[ 'title' ] ) ) {
                        $title = $instance[ 'title' ];
                } else {
                        $title = __( 'Our Writers' );
                }
                if( isset( $instance[ 'max_authors' ] ) ) {
                        $max_authors = $instance[ 'max_authors' ];
                } else {
                        $max_authors = 10;
                }
                if( isset( $instance[ 'posted_since' ] ) ) {
                        $posted_since = $instance[ 'posted_since' ];
                } else {
                        $posted_since = "All";
                }
                ?>
                <p>
                <label for="<?php echo $this->get_field_name( 'title' ); ?>"><?php _e( 'Title:' ); ?></label> 
                <input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>" />
                <label for="<?php echo $this->get_field_name( 'max_authors' ); ?>"><?php _e( 'Max Authors Displayed:' ); ?></label> 
                <input class="widefat" id="<?php echo $this->get_field_id( 'max_authors' ); ?>" name="<?php echo $this->get_field_name( 'max_authors' ); ?>" type="text" value="<?php echo esc_attr( $max_authors ); ?>" />     
                <label for="<?php echo $this->get_field_name( 'posted_since' ); ?>"><?php _e( 'Posted Since (days):' ); ?></label> 
                <input class="widefat" id="<?php echo $this->get_field_id( 'posted_since' ); ?>" name="<?php echo $this->get_field_name( 'posted_since' ); ?>" type="text" value="<?php echo esc_attr( $posted_since ); ?>" />  
                </p>
                <?php
        }

        public function update( $new_instance, $old_instance ) {
                $instance = array();
                $instance[ 'title' ] = ( ! empty( $new_instance[ 'title' ] ) ) ? strip_tags( $new_instance[ 'title' ] ) : '';
                $instance[ 'max_authors' ] = ( ! empty( $new_instance[ 'max_authors' ] ) ) ? strip_tags( $new_instance[ 'max_authors' ] ) : 10;
                $instance[ 'posted_since' ] = ( ! empty( $new_instance[ 'posted_since' ] ) ) ? strip_tags( $new_instance[ 'posted_since' ] ) : "All";
                return $instance;
        }

        public function widget( $args, $instance ) {
                $title = apply_filters( 'widget_title', $instance[ 'title' ] );
                echo $args[ 'before_widget' ];
                if( ! empty( $title ) ) {
                        echo $args[ 'before_title' ] . $title . $args[ 'after_title' ];
                }
                echo $this->tf_get_authors( $instance );
                echo $args['after_widget'];
        }

        public function tf_get_authors( $instance ) {
                $instance = wp_parse_args( $instance, array(
                        'title' => 'Our Writers',
                        'max_authors' => 10,
                        'posted_since' => "All"
                        ) );
                if( is_numeric( $instance[ 'posted_since' ] ) AND $instance[ 'posted_since' ] != 0 ) {
                        $since = " AND post_date > '" . date('Y-m-d', strtotime('-' . $instance[ 'posted_since' ] . ' days')) . "'";
                } else {
                        $since = "";
                }
                $output = "";
                global $wpdb; 
                foreach ( (array) $wpdb->get_results( "SELECT DISTINCT post_author FROM $wpdb->posts WHERE post_type = 'post' AND " . get_private_posts_cap_sql( 'post' ) . $since . " GROUP BY post_author LIMIT " . $instance[ 'max_authors' ] ) as $row ) { 
                        $firstname              = get_the_author_meta( 'first_name', $row->post_author ); 
                        $lastname               = get_the_author_meta( 'last_name', $row->post_author ); 
                        $fullname               = $firstname . " " . $lastname; 
                        $author_url             = home_url( '/author/' ) . get_the_author_meta( 'nicename', $row->post_author ); 
                        $author_avatar  = get_avatar( get_the_author_meta( 'email', $row->post_author ), 32 ); 
                        $output .= '<p class="author-single"><a href="'. $author_url .'" title="' .  $fullname . '">' . $author_avatar . "&nbsp;" . $fullname . '</a></p>';
                } 
            return $output;
        }

}
function register_author_widget() {
        register_widget( 'TF_Author_Widget' );
}
add_action( 'widgets_init', 'register_author_widget' );