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add_filter('template_redirect', 'disable_cdn_enabler_rewrites', 9);
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function disable_cdn_enabler_rewrites($content) {
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	remove_action('template_redirect', 'CDN_Enabler::handle_rewrite_hook', 10);
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}

1
add_action('template_redirect', array(new cdn_enabler_fix(), 'pre_get_options'), 9);
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class cdn_enabler_fix {
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	private $excluded_urls = array();
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	public function __construct() {}
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	public function pre_get_options() {
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		// Get the post content
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		global $post;
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		if (!isset($post) || !isset($post->ID)) { return; }
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		$content = get_post_field('post_content', $post->ID);
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		// Get and store the content to exclude from CDN Enabler URL replacement
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		$excluded_content = $content
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		// Get URLs to exclude
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		$this->excluded_urls = $this->get_urls($excluded_content);
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		// Filter the CDN Enabler option to add the exclusions
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		add_filter('option_cdn_enabler', array($this, 'add_exclusions'));
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	}
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	function add_exclusions($options) {
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		if (!is_array($options)) { return $options; }
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		// Add the excluded URLs to the CDN Enabler option
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		$urls = implode(',', $this->excluded_urls);
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		$options['excludes'] = empty($options['excludes'])?$urls:$options['excludes'].','.$urls;
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		return $options;
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	}
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	// Extract a list of URLs from the excluded content that CDN enabler could rewrite
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	// - Based on CDN Enabler's own regex code (v1.0.7)
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	public function get_urls($content) {
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		$options = wp_parse_args(
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			get_option('cdn_enabler', array()),
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			array(
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				'url'             => get_option('home'),
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				'dirs'            => 'wp-content,wp-includes',
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				'excludes'        => '.php',
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				'relative'        => 1,
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				'https'           => 0,
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				'keycdn_api_key'  => '',
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				'keycdn_zone_id'  => '',
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			)
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		);
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		// check if HTTPS and use CDN over HTTPS enabled
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		if (!$options['https'] && isset($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] == 'on') {
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			return array();
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		}
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		// get dir scope in regex format
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		$input = explode(',', $options['dirs']);
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		if ($options['dirs'] == '' || count($input) < 1) {
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			return 'wp\-content|wp\-includes';
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		}
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		$dirs = implode('|', array_map('quotemeta', array_map('trim', $input)));
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		$url = quotemeta(get_option('home'));
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		$relative_url = substr($url, strpos($url, '//'));
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		$blog_url = $options['https']
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			? '(https?:|)'.$relative_url
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			: '(http:|)'.$relative_url;
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		// regex rule start
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		$regex_rule = '#(?<=[(\"\'])';
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		// check if relative paths
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		if ($options['relative']) {
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			$regex_rule .= '(?:'.$blog_url.')?';
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		} else {
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			$regex_rule .= $blog_url;
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		}
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		// regex rule end
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		$regex_rule .= '/(?:((?:'.$dirs.')[^\"\')]+)|([^/\"\']+\.[^/\"\')]+))(?=[\"\')])#';
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		$matches = array();
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		preg_match_all($regex_rule, $content, $matches);
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		return $matches[0];
91
	}
92
}
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