<?php
/*
Plugin Name: HideText
Plugin URI: [h]Как не отображать картинку на странице поста?
Description: Allows to hide text fragments in single posts. Usage: [hide]text fragment[/hide].
Version: 0.1
Author: Remorhaz
Author URI: [h]ttp://www.master-x.com/wm_directory/about/?u=31769
*/

function hidetext_shortcode_hide($attributes, $content = null)
{
    global $post;
    return is_single($post) ? '' : $content;
}

add_shortcode('hide', 'hidetext_shortcode_hide');

?>

blah-blah-blah [hide]<img src="..." />[/hide] blah-blah-blah