willmot/functions.php

## functions.php
<?php

/**
 * Run images inserted into posts through WP Thumb
 *
 * This serves a couple of purposes, 1 it allows us to delete the cache folder
 * without having to worry about losing images and 2 it ensures all images
 * are cropped to the correct size and limited to $content_width
 *
 * @var string
 */
add_filter( 'the_content', function ( $content ) {

	global $content_width;

	if ( empty( $content ) || ! is_single() )
		return $content;

	global $wpdb;

	$content = '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />' . $content;

	$dom = new DomDocument;
	@$dom->loadHTML( $content );
	$images = $dom->getElementsByTagName( 'img' );

	foreach ( $images as $image ) {

		// Attempt to grab the post id from the class attribute
		$post_id = preg_replace( '#[^0-9]#', '', $image->getAttribute( 'class' ) );

		if ( ! $post_id || ! get_post( $post_id ) )
			continue;

		$width = $image->getAttribute( 'width' );
		$height = $image->getAttribute( 'height' );

		if ( $content_width && $width > $content_width )
			$width = $content_width;

		$img = wp_get_attachment_image_src( $post_id, array( $width, $height ) );

		$image->setAttribute( 'width', $img[1] );
		$image->setAttribute( 'height', $img[2] );

		$image->setAttribute( 'src', $img[0] );

	}

	$content = preg_replace( '/^<!DOCTYPE.+?>/', '', str_replace( array( '<html>', '</html>', '<head>', '</head>', '<body>', '</body>', '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">' ), '', $dom->saveHTML() ) );

	return $content;

} );
	<?php

	/**
	* Run images inserted into posts through WP Thumb
	*
	* This serves a couple of purposes, 1 it allows us to delete the cache folder
	* without having to worry about losing images and 2 it ensures all images
	* are cropped to the correct size and limited to $content_width
	*
	* @var string
	*/
	add_filter( 'the_content', function ( $content ) {

	global $content_width;

	if ( empty( $content ) \|\| ! is_single() )
	return $content;

	global $wpdb;

	$content = '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />' . $content;

	$dom = new DomDocument;
	@$dom->loadHTML( $content );
	$images = $dom->getElementsByTagName( 'img' );

	foreach ( $images as $image ) {

	// Attempt to grab the post id from the class attribute
	$post_id = preg_replace( '#[^0-9]#', '', $image->getAttribute( 'class' ) );

	if ( ! $post_id \|\| ! get_post( $post_id ) )
	continue;

	$width = $image->getAttribute( 'width' );
	$height = $image->getAttribute( 'height' );

	if ( $content_width && $width > $content_width )
	$width = $content_width;

	$img = wp_get_attachment_image_src( $post_id, array( $width, $height ) );

	$image->setAttribute( 'width', $img[1] );
	$image->setAttribute( 'height', $img[2] );

	$image->setAttribute( 'src', $img[0] );

	}

	$content = preg_replace( '/^<!DOCTYPE.+?>/', '', str_replace( array( '<html>', '</html>', '<head>', '</head>', '<body>', '</body>', '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">' ), '', $dom->saveHTML() ) );

	return $content;

	} );