[gallery ids="1099,1098,1097"]

< ?php
	$images =& get_children( array (
		'post_parent' => $post->ID,
		'post_type' => 'attachment',
		'post_mime_type' => 'image'
	));
 
	if ( empty($images) ) {
		// no attachments here
	} else {
		foreach ( $images as $attachment_id => $attachment ) {
			echo wp_get_attachment_image( $attachment_id, 'thumbnail' );
		}
	}
?>

echo wp_get_attachment_image( $attachment_id, 'thumbnail' );

add_filter( 'be_gallery_metabox_intro', 'sample_change_gallery_metabox_intro' );
/**
 * Change Gallery Metabox Intro
 * @author Bill Erickson
 * @link http://www.billerickson.net/code/gallery-metabox-change-intro-text
 *
 * @param string $intro
 * @return string
*/
function sample_change_gallery_metabox_intro( $intro ) {
	$intro = '<p><a href="media-upload.php?post_id=' . $post->ID .'&amp;type=image&amp;TB_iframe=1&amp;width=640&amp;height=715" id="add_image" class="thickbox" title="Add Image">Upload Images</a> | <a href="media-upload.php?post_id=' . $post->ID .'&amp;type=image&amp;tab=gallery&amp;TB_iframe=1&amp;width=640&amp;height=715" id="manage_gallery" class="thickbox" title="Manage Gallery">Manage Gallery</a></p>';
	echo $intro;
}

< ?php
 
/**
 * Gallery Metabox - Only show on 'page' and 'rotator' post types
 * @author Bill Erickson
 * @link http://www.wordpress.org/extend/plugins/gallery-metabox
 * @link http://www.billerickson.net/code/gallery-metabox-custom-post-types
 * @since 1.0
 *
 * @param array $post_types
 * @return array
 */
function be_gallery_metabox_page_and_rotator( $post_types ) {
	return array( 'page', 'rotator','post' );
}
add_action( 'be_gallery_metabox_post_types', 'be_gallery_metabox_page_and_rotator' );

< ?php
 
/**
 * Limit Gallery Metabox to Specific Page
 * @author Bill Erickson
 * @link http://www.wordpress.org/extend/plugins/gallery-metabox
 * @since 1.0
 *
 * @param bool display metabox
 * @param string post ID
 * @return bool display metabox
 */
function be_gallery_metabox_on_specific_page(  $true, $post_id ) {
	return '10' == $post_id;
}
 
add_filter( 'be_gallery_metabox_limit', 'be_gallery_metabox_on_specific_page', 10, 2 );

< ?php
 
add_filter( 'be_gallery_metabox_args', 'be_gallery_custom_args' );
/**
 * Only show images marked as Include in Rotator
 * @author Bill Erickson
 * @link http://www.wordpress.org/extend/plugins/gallery-metabox
 * @since 1.0
 *
 * @param array query $args
 * @return array query $args
 */
function be_gallery_custom_args( $args ) {
	$args['meta_query'] = array(
		array(
			'key' => 'be_rotator_include',
			'value' => '1'
		)
	);
	return $args;
}

< ?php
 
/**
 * Gallery Metabox - sort by title
 * @author Bill Erickson
 * @link http://www.wordpress.org/extend/plugins/gallery-metabox
 * @since 1.0
 *
 * @param array query $args
 * @return array query $args
 */
function be_gallery_custom_args( $args ) {
	$args['orderby'] = 'title';
	$args['order'] = 'ASC';
	return $args;
}
add_filter( 'be_gallery_metabox_args', 'be_gallery_custom_args' );

 
 
/**
 * Add "Include in Rotator" option to media uploader
 * Limited to Home page
 *
 * @param $form_fields array, fields to include in attachment form
 * @param $post object, attachment record in database
 * @return $form_fields, modified form fields
 */
 
function be_attachment_field_rotator( $form_fields, $post ) {
 
//  // Only show on front page
	if( ! ( $post->post_parent == get_option( 'page_on_front' ) ) )
		return $form_fields;
 
	// Set up options
	$options = array( '1' => 'Yes', '0' => 'No' );
 
	// Get currently selected value
	$selected = get_post_meta( $post->ID, 'be_rotator_include', true );
 
	// If no selected value, default to 'No'
	if( !isset( $selected ) ) 
		$selected = '0';
 
	// Display each option	
	foreach ( $options as $value => $label ) {
		$checked = '';
		$css_id = 'rotator-include-option-' . $value;
 
		if ( $selected == $value ) {
			$checked = " checked='checked'";
		}
 
		$html = "<div class='rotator-include-option'><input type='radio' name='attachments[$post-/>ID][be-rotator-include]' id='{$css_id}' value='{$value}'$checked />";
 
		$html .= "<label for='{$css_id}'>$label</label>";
 
		$html .= '</div>';
 
		$out[] = $html;
	}
 
	// Construct the form field
	$form_fields['be-include-rotator'] = array(
		'label' => 'Include in Rotator',
		'input' => 'html',
		'html'  => join("\n", $out),
	);
 
	// Return all form fields
	return $form_fields;
}
 
add_filter( 'attachment_fields_to_edit', 'be_attachment_field_rotator', 10, 2 );
 
 
/**
 * Save value of "Include in Rotator" selection in media uploader
 *
 * @param $post array, the post data for database
 * @param $attachment array, attachment fields from $_POST form
 * @return $post array, modified post data
 */
 
function be_attachment_field_rotator_save( $post, $attachment ) {
	if( isset( $attachment['be-rotator-include'] ) ) 
		update_post_meta( $post['ID'], 'be_rotator_include', $attachment['be-rotator-include'] );
 
	return $post;
}
 
add_filter( 'attachment_fields_to_save', 'be_attachment_field_rotator_save', 10, 2 );

add_filter( 'be_gallery_metabox_remove', '__return_false' );

< ?php 
$images=$BE_Gallery_Metabox->gallery_images(1);
print_r($images);
?>

< ?php
    add_filter('images_cpt','my_image_cpt');
    function my_image_cpt(){
        $cpts = array('page','my_custom_post_type');
        return $cpts;
    }
?>

< ?php
    add_filter('list_images','my_list_images');
    function my_list_images(){
        //I only need two pictures
        $picts = array(
            'image1' => '_image1',
            'image2' => '_image2',
        );
        return $picts;
    }
?>

add_filter('list_images','my_list_images',10,2);
function my_list_images($list_images, $cpt){
    global $typenow;
    if($typenow == "my_custom_post_type" || $cpt == "my_custom_post_type")
        $picts = array(
            'image1' => '_image1',
            'image2' => '_image2',
            'image3' => '_image3',
        );
    else
        $picts = array(
            'image1' => '_image1',
            'image2' => '_image2',
            'image3' => '_image3',
            'image4' => '_image4',
            'image5' => '_image5',
            'image6' => '_image6',
            'image7' => '_image7',
            'image8' => '_image8',
        );
    return $picts;
}

while(have_posts())":
$imgs=get_images_ids();
print_r($imgs);
 
//true: ảnh bao gồm cả thumbnail trong kết quả trả về
get_images_ids(true);
 
endwhile;

//An exemple of output
array(
    [0]  => 45,
    'image1' => 5,
    'image2' => 6,
    'image3' => 12,
    'image6' => 20,
    'image7' => 15
);

$id='10';
get_images_ids(false,$id);

< ?php 
get_images_src('medium',false,id); //3 accepted parameter : the size (STRING) & thumbnail (BOOLEAN) & id (integer)
 
//An exemple of output
array(
    'image1' => array(
        [0] => 'http://url_of_the_medium_pict.jpg',
        [1] => 340,
        [2] => 200,
        [3] => false //I've no idea what is it...
    ),
    'image2' => array(
        [0] => 'http://url_of_the_medium_second_pict.jpg',
        [1] => 340,
        [2] => 200,
        [3] => false //I've no idea what is it...
    )
);
 
?>

<ol>
<li><strong>size</strong> (string) kích thước trả về.</li>
<li><strong>size2</strong> (string) một kích thước trả về thêm</li>
<li><strong>include the thumbnail ?</strong> (boolean) nếu true trong kết quả trả về có thêm thumbnail</li>
<li><strong>ID</strong> (integer) lấy images liên kết với post xác định bởi ID.</li>
</ol>