cfinke/html-posts.php

## html-posts.php
<?php

/**
 * Drop this file in wp-content/mu-plugins/ (create if it doesn't exist),
 * create a writable directory on your server to store the HTML, then call
 * http://www.yourblog.com/?html-output-dir=/path/to/dir/you/created.
 */

function write_html_posts() {
	remove_filter( 'the_content', 'wptexturize' );

	if ( isset( $_GET['html-output-dir'] ) && is_dir( $_GET['html-output-dir'] ) ) {
		$_GET['html-output-dir'] = rtrim( $_GET['html-output-dir'], '/' );

		$posts = get_posts( array(
			'numberposts' => 50000,
			'order' => 'ASC',
		) );

		foreach ( $posts as $post ) {
			setup_postdata($post);
			$title = get_the_title( $post->ID );

			$fh = fopen( $_GET['html-output-dir'] . '/' . $post->ID . '.html', 'w' );
			fwrite( $fh, '<!DOCTYPE html><html><head><meta charset="UTF-8" /><title>' . $title . '</title></head><body><h1>' . $title . '</h1><div>' . apply_filters( 'the_content', get_the_content() ) . '</div></body></html>' );
			fclose( $fh );
		}

		wp_die( 'Done.' );
	}
}

add_action( 'init', 'write_html_posts' );
	<?php

	/**
	* Drop this file in wp-content/mu-plugins/ (create if it doesn't exist),
	* create a writable directory on your server to store the HTML, then call
	* http://www.yourblog.com/?html-output-dir=/path/to/dir/you/created.
	*/

	function write_html_posts() {
	remove_filter( 'the_content', 'wptexturize' );

	if ( isset( $_GET['html-output-dir'] ) && is_dir( $_GET['html-output-dir'] ) ) {
	$_GET['html-output-dir'] = rtrim( $_GET['html-output-dir'], '/' );

	$posts = get_posts( array(
	'numberposts' => 50000,
	'order' => 'ASC',
	) );

	foreach ( $posts as $post ) {
	setup_postdata($post);
	$title = get_the_title( $post->ID );

	$fh = fopen( $_GET['html-output-dir'] . '/' . $post->ID . '.html', 'w' );
	fwrite( $fh, '<!DOCTYPE html><html><head><meta charset="UTF-8" /><title>' . $title . '</title></head><body><h1>' . $title . '</h1><div>' . apply_filters( 'the_content', get_the_content() ) . '</div></body></html>' );
	fclose( $fh );
	}

	wp_die( 'Done.' );
	}
	}

	add_action( 'init', 'write_html_posts' );