WordPress Snippet

<?php
function my_random_images($count=1, $size='thumbnail'){
 $args= array(
 'showposts'=> $count, 
 'post_type'=> 'attachment',
 'post_mime_type'=> 'image',
 'orderby'=> 'rand',
 );
 
 $images= get_posts($args);
 
 $html= '<div class="randam-attachment" style="%4$s">
 			<a href="%1$s" rel="post">%2$s</a><br />
			%3$s
			</div>';
 
 $inline_style= 'width:'.round( (98 - $count * 2) / $count ) .'%;display:inline-block;margin:1%';
 
	foreach($images as $key=>$image){
		printf( $html, 
				get_permalink($images[$key]->post_parent),
				get_the_title($images[$key]->post_parent),
				wp_get_attachment_image($image->ID,$size ,true, array( 'style'=>'max-width:100%' ) ),
				$inline_style
			);
	}
}
?>

http://ja.forums.wordpress.org/topic/12727?replies=4#post-45498(@source)

サイドバーに　2枚ずつ並べたいというリクエストだったので、サイドバー用のコードをおまけ、

<?php
function my_random_images_for_sidebar($count=1, $size='thumbnail'){
 $args= array(
 'showposts'=> $count,
 'post_type'=> 'attachment',
 'post_mime_type'=> 'image',
 'orderby'=> 'rand',
 );
 
 $images= get_posts($args);
 
 $html= '<div class="randam-attachment" style="%4$s">
<a href="%1$s" rel="post" title="%2$s">%3$s</a><br />
</div>';
 /* 2枚ずつ並べる */
 $columns= 2;
 $inline_style= 'width:'.round( (96 - $columns * 2) / $columns ) .'%;display:inline-block;margin:0 '.$columns .'%;';
 
 foreach($images as $key=>$image){
 printf( $html,
 get_permalink($images[$key]->post_parent),
 esc_attr( get_the_title($images[$key]->post_parent) ),
 wp_get_attachment_image($image->ID,$size ,true, array( 'style'=>'max-width:100%;height:auto;' ) ),
 $inline_style
);
 }
}
?>

[do_function name=”my_random_images” first=”3″]