Soo many WordPress body & post classes.

functions.php

<?php

function filter_body_class($classes, $custom_classes ){
	
	
	//avoid putting in too many
	unset($classes);
	$classes = array();
	
	
	
	if (is_home() OR is_archive()) {
		$classes[] = 'list';
		if ( 'post' == get_post_type() ) {
			$classes[] = 'all_blog';
		}
	}
	if (is_search()) {
		$classes[] = 'list';
	}
	if (is_singular() or is_404()) {
		$classes[] = 'singular';
		
		// $post_slug = $wp_query->post->post_name;
		// $classes[] = 'slug-' . sanitize_html_class($post_slug);
		
		if ( ( 'post' == get_post_type() ) OR ( 'attachment' == get_post_type() ) ) {
			$classes[] = 'all_blog';
		}
	}
	if ( is_page_template() ) {
		$classes[] = 'page-template-' . sanitize_html_class( str_replace( '.', '-', get_post_meta( $page_id, '_wp_page_template', true ) ), '' );
	}
	
	

	if ( ! empty( $custom_classes ) ) {
		if ( !is_array( $custom_classes ) )
			$custom_classes = preg_split( '#\s+#', $custom_classes );
		$classes = array_merge( $classes, $custom_classes );
	} else {
		// Ensure that we always coerce class to being an array.
		$custom_classes = array();
	}

	return array_unique( $classes );
}
add_filter( 'body_class', 'filter_body_class', 10, 2 );


function filter_post_class($classes, $custom_classes = null, $post_id = null) {
	//avoid putting in too many
	unset($classes);
	$classes = array();
	
	$classes[] = 'hentry';
	
	$classes[] = 'post-' . $post_id;
	
	$post_alt = &$this->post_alt;
	$post_alt++;
	$classes[] = 'p' . $post_alt;
	$post_alt % 2 ? null : $classes[] = 'alt';
	
	
	
	// $classes[] = 'author-' . sanitize_title_with_dashes(strtolower(get_the_author()));
	
	// $classes[] = get_the_tags() ? null : 'untagged';

	if ( ! empty( $custom_classes ) ) {
		if ( !is_array( $custom_classes ) )
			$custom_classes = preg_split( '#\s+#', $custom_classes );
		$classes = array_merge( $classes, $custom_classes );
	} else {
		// Ensure that we always coerce class to being an array.
		$custom_classes = array();
	}

	return array_unique( $classes );
}
add_filter( 'post_class', 'filter_post_class', 10, 3 );


?>