You may have heard a bit of news about a new thumbnail/featured image for themes coming to WordPress 2.9. Yes, you'll be able to easily upload a post thumbnail. However, it's not just thumbnails. The image will have various sizes. So, I'm going to refer to this feature as the post image feature.
//add this to the functions.php file
add_theme_support( 'post-thumbnails' );
//add this to the functions.php file this to only add to page templates not posts
add_theme_support( 'post-thumbnails', array( 'page' ) );
//Show the thumbnail
<?php the_post_thumbnail( 'thumbnail' ); ?>
//Show the thumbnail as medium
<?php the_post_thumbnail( 'medium' ); ?>
//Change thumbnail size
if ( function_exists( 'add_image_size' ) ) {
add_image_size( 'game-thumb', 100, 74 ,true);//true arg is for hard crop
}
//Use a conditional
<?php if ( has_post_thumbnail() ) the_post_thumbnail('game-thumb'); ?>
//Change the title attribute
<?php the_post_thumbnail( 'post-thumbnail', array( 'title' => $title, 'alt' => $title ) ); ?>
