创建自己的边栏小工具-WP新手学园

下面的代码是一个简易代码，直接放入function.php中即可生效，如果有兴趣的朋友可以自行尝试一下。

function hstngr_register_widget() {
register_widget( 'hstngr_widget' );
}
add_action( 'widgets_init', 'hstngr_register_widget' );
class hstngr_widget extends WP_Widget {
function __construct() {
parent::__construct(
// widget ID
'hstngr_widget',
// widget name
__('Hostinger Sample Widget', ' hstngr_widget_domain'),
// widget description
array( 'description' => __( 'Hostinger Widget Tutorial', 'hstngr_widget_domain' ), )
);
}
public function widget( $args, $instance ) {
$title = apply_filters( 'widget_title', $instance['title'] );
echo $args['before_widget'];
//if title is present
if ( ! empty( $title ) )
echo $args['before_title'] . $title . $args['after_title'];
//output
echo __( 'Greetings from Hostinger.com!', 'hstngr_widget_domain' );
echo $args['after_widget'];
}
public function form( $instance ) {
if ( isset( $instance[ 'title' ] ) )
$title = $instance[ 'title' ];
else
$title = __( 'Default Title', 'hstngr_widget_domain' );
?>
<p>
<label for="<?php echo $this->get_field_id( '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 ); ?>" />
</p>
<?php
}
public function update( $new_instance, $old_instance ) {
$instance = array();
$instance['title'] = ( ! empty( $new_instance['title'] ) ) ? strip_tags( $new_instance['title'] ) : '';
return $instance;
}
}

function hstngr_register_widget() {

register_widget( 'hstngr_widget' );

}

add_action( 'widgets_init', 'hstngr_register_widget' );

class hstngr_widget extends WP_Widget {

function __construct() {

parent::__construct(

// widget ID

'hstngr_widget',

// widget name

__('Hostinger Sample Widget', ' hstngr_widget_domain'),

// widget description

array( 'description' => __( 'Hostinger Widget Tutorial', 'hstngr_widget_domain' ), )

);

}

public function widget( $args, $instance ) {

$title = apply_filters( 'widget_title', $instance['title'] );

echo $args['before_widget'];

//if title is present

if ( ! empty( $title ) )

echo $args['before_title'] . $title . $args['after_title'];

//output

echo __( 'Greetings from Hostinger.com!', 'hstngr_widget_domain' );

echo $args['after_widget'];

}

public function form( $instance ) {

if ( isset( $instance[ 'title' ] ) )

$title = $instance[ 'title' ];

else

$title = __( 'Default Title', 'hstngr_widget_domain' );

<p>

<label for="<?php echo $this->get_field_id( '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 ); ?>" />

</p>

<?php

}

public function update( $new_instance, $old_instance ) {

$instance = array();

$instance['title'] = ( ! empty( $new_instance['title'] ) ) ? strip_tags( $new_instance['title'] ) : '';

return $instance;

}