<?php
 
/**
 * Class Email Encrypt
 * From http://www.freesandbox.net/
 * Under a GPL License v 2.0
 * see http://www.gnu.org/licenses/gpl-2.0.html for further informations
 *
 */
Class EmailEncrypt {
	public $email;
	public $return;
	public $temp;
	public $enc_type;
 
	/**
	 * Construct function
	 * Do nothing
	 */
	function __construct() {
 
	}
 
	/**
	 * Private function email
	 * encode a email in a specific format
	 * @param $email        = email to encode
	 * @param $codification = type of codification
	 * @param $link         = the mail has a link?
	 */
 
	private function email($email, $codification = "none", $link = 1) {
		switch ($codification) {
 
			/**
			 * Case Javascript
			 */
			case "javascript" :
				if ($link == 1)
					$string = "document.write('<a href=\"mailto:{$email}\">{$email}</a>')";
				else
					$string = "document.write('{$email}')";
				for ($x = 0; $x < strlen($string); $x++) {
					$js_encode .= '%' . bin2hex($string[$x]);
				}
				return '<script type="text/javascript">eval(unescape(\'' . $js_encode . '\'))</script>';
				break;
 
				/**
				 * Case Javascript Charcode
				 */
			case "javascript_charcode" :
				if ($link == 1)
					$string = "<a href=\"mailto:{$email}\">{$email}</a>";
				else
					$string = "{$email}";
				for ($x = 0, $y = strlen($string); $x < $y; $x++) {
					$ord[] = ord($string[$x]);
				}
 
				$_ret = "<script type=\"text/javascript\" language=\"javascript\">\n";
				$_ret .= "<!--\n";
				$_ret .= "{document.write(String.fromCharCode(";
				$_ret .= implode(',', $ord);
				$_ret .= "))";
				$_ret .= "}\n";
				$_ret .= "//-->\n";
				$_ret .= "</script>\n";
 
				return $_ret;
				break;
 
				/**
				 * Case Hex
				 */
			case "hex" :
				$mailto = "&#109;&#97;&#105;&#108;&#116;&#111;&#58;";
				$mail_encoded = "";
				for ($x = 0; $x < strlen($email); $x++) {
					$mail_encoded .= preg_match('/^[A-Za-z0-9]$/', $email[$x]) ? '&#x' . bin2hex($email[$x]) . ';' : $email[$x];
				}
				if ($link)
					return "<a href=\"{$mailto}{$mail_encoded}\">{$mail_encoded}</a>";
				else
					return "{$mail_encoded}";
				break;
 
				/**
				 * Case Paranoid
				 */
			case "paranoid" :
				$temp = "";
				$mail = explode("@", $email);
				for ($i = 0; $i < strlen($mail[0]); $i++) {
					$temp .= (rand(0, 1) ? "<!-- " . uniqid(md5(time()), true) . " -->" : "<span style=\"visibility: hidden; display: none;\">\n" . uniqid(md5(time()), true) . "\m</span>") . substr($mail[0], $i, 1);
				}
				$temp .= "<script type=\"text/javascript\">\n<!--\n\tdocument.write(unescape(\"%40\"))\n//-->\n</script>";
				for ($i = 0; $i < strlen($mail[1]); $i++) {
					$temp .= (rand(0, 1) ? "<!-- " . uniqid(md5(time()), true) . " -->" : "<span style=\"visibility: hidden; display: none;\">\n" . uniqid(md5(time()), true) . "</span>") . substr($mail[1], $i, 1);
				}
 
				return $temp;
				break;
 
				/**
				 * Case Paranoid + CSS
				 */
			case "paranoid_css" :
				$mail = explode("@", $email);
				$temp = "";
				$temp .= "<style type=\"text/css\">\n.J";
				$rand = md5(time());
				$temp .= $rand;
				$temp .= ":";
				$temp .= (rand(0, 1)) ? "before" : "after";
				$temp .= " {\n\tcontent: \"@\";\n}\n</style>";
				$mail = explode("@", $email);
				$temp .= "{$mail[0]}<span class=\"J{$rand}\"></span>{$mail[1]}";
				return $temp;
				break;
				/**
				 * Case none / default
				 */
			case "none" :
			default :
				if ($link == 1)
					return "<a href=\"mailto:{$email}\">{$email}</a>";
				else
					return "{$email}";
 
				break;
		}
		$title_encoded = null;
		for ($ii = 0; $ii < strlen($email); $ii++) {
			$title_encoded .= preg_match('/^[A-Za-z0-9]$/', $email[$ii]) ? '&#x' . bin2hex($email[$ii]) . ';' : $email[$ii];
		}
		$js_encode = '';
		//$js_encode;
		echo '<script type="text/javascript">eval(unescape(\'' . $js_encode . '\'))</script>';
	}
 
	/**
	 * Public Static function js
	 * Puts a email in a javascript encode
	 * @param $email = email to encrypt
	 * @param $link  = bool to put (or not) a mailto reference
	 */
	public static function js($email, $link = 0) {
		return self :: email($email, "javascript", $link);
	}
 
	/**
	 * Public Static function jsc
	 * Puts a email in a javascript charcode encode
	 * @param $email = email to encrypt
	 * @param $link  = bool to put (or not) a mailto reference
	 */
	public static function jsc($email, $link = 0) {
		return self :: email($email, "javascript_charcode", $link);
	}
 
	/**
	 * Public Static function hex
	 * Puts a email in a hexadecimal encode
	 * @param $email = email to encrypt
	 * @param $link  = bool to put (or not) a mailto reference
	 */
	public static function hex($email, $link = 0) {
		return self :: email($email, "hex", $link);
	}
 
	/**
	 * Public Static function paranoid
	 * Puts a email in a paranoid encode
	 * @param $email = email to encrypt
	 */
	public static function paranoid($email) {
		return self :: email($email, "paranoid");
	}
 
	/**
	 * Public Static function paranoid
	 * Puts a email in a paranoid encode with CSS
	 * @param $email = email to encrypt
	 */
	public static function paranoidc($email) {
		return self :: email($email, "paranoid_css");
	}
}
echo EmailEncrypt :: paranoidc("meu@email.com");
?>