/**
* Encrypt content using Javascript so that it's hidden when JS is disabled.
*
* This is mostly used to hide email addresses from scraper bots.
*
* @param string $content Content to encrypt
* @param string $message Message shown if Javascript is disabled
*
* @see https://github.com/jnicol/standalone-phpenkoder StandalonePHPEnkoder on Github
*
* @since 1.7
*
* @return string Content, encrypted
*/
public static function js_encrypt($content, $message = '')
{
$output = $content;
if (!class_exists('StandalonePHPEnkoder')) {
include_once GRAVITYVIEW_DIR . 'includes/lib/standalone-phpenkoder/StandalonePHPEnkoder.php';
}
if (class_exists('StandalonePHPEnkoder')) {
$enkoder = new StandalonePHPEnkoder();
$message = empty($message) ? __('Email hidden; Javascript is required.', 'gravityview') : $message;
/**
* @filter `gravityview/phpenkoder/msg` Modify the message shown when Javascript is disabled and an encrypted email field is displayed
* @since 1.7
* @param string $message Existing message
* @param string $content Content to encrypt
*/
$enkoder->enkode_msg = apply_filters('gravityview/phpenkoder/msg', $message, $content);
$output = $enkoder->enkode($content);
}
return $output;
}
<?php require_once 'StandalonePHPEnkoder.php'; $enkoder = new StandalonePHPEnkoder(); // Enkode all plaintext and mailto: links in a string. $html = '<p>Why not <a href="mailto:test@test.com?subject=Hello" tile="Email me">email me</a>. Your email will be sent to test@test.com. Here is another mailto, with an email address as the anchor text: <a href="mailto:test@test.com">test@test.com</a>. If you view source you shouldn\'t see any email addresses.</p>'; echo $enkoder->enkodeAllEmails($html);