| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |  * Copyright (c) 2011-2012 Andreas Heigl<[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * Permission is hereby granted, free of charge, to any person obtaining a copy | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * of this software and associated documentation files (the "Software"), to deal | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * in the Software without restriction, including without limitation the rights | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  * copies of the Software, and to permit persons to whom the Software is | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  * furnished to do so, subject to the following conditions: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  * The above copyright notice and this permission notice shall be included in | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  * all copies or substantial portions of the Software. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |  * THE SOFTWARE. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  * @category  MailProxy | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |  * @package   OrgHeiglMailproxy | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |  * @author    Andreas Heigl<[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |  * @copyright 2011-2012 Andreas Heigl | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |  * @license   http://www.opesource.org/licenses/mit-license.php MIT-License | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |  * @version   0.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |  * @since     06.03.2012 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |  * @link      http://github.com/heiglandreas/mailproxyModule | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  | namespace Org_Heigl\Mailproxy\View\Helper; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  | use Zend\View\Helper\AbstractHtmlElement as HtmlElement; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |  * A view helper taht generates a mailto-link with an obfuscated eMail-address | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |  * The mail-address will be reversed and via RightToLeft-Display is visible the | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |  * "normal" way. clicking the link will call the ProxyController and redirect to | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |  * a mailto: url which will open the users Mail-Client | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |  * @author    Andreas Heigl<[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |  * @copyright Andreas Heigl | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |  * @license   http://www.opesource.org/licenses/mit-license.php MIT-License | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |  * @version   0.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |  * @since     06.03.2012 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |  * @link      http://github.com/heiglandreas/OrgHeiglMailproxy | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  | class Mailto extends HtmlElement | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |      * The class to use for marking this element | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |      * var string $class | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |     private $mailtoclass = 'orgHeiglMailProxy'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |      * create a link to the mailproxy-url | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |      * @param string $address  The Mail-address to proxy to | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |      * @param string $linktext The optional link text. $address will be used if | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |      * omited | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |      * @param array  $params   Optional parameters | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |      * @return void | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 67 |  |  |      */ | 
            
                                                        
            
                                    
            
            
                | 68 |  |  |     public function __invoke($address, $linktext = null, $params = array()) | 
            
                                                        
            
                                    
            
            
                | 69 |  |  |     { | 
            
                                                        
            
                                    
            
            
                | 70 |  |  |         $url = $this->getView()->url('mailproxy', ['id' => strrev($address)]); | 
                            
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                | 71 |  |  |         $this->getView()->headStyle()->appendStyle('.' . $this->mailtoclass . '{ | 
                            
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                | 72 |  |  |     direction: rtl; | 
            
                                                        
            
                                    
            
            
                | 73 |  |  |     unicode-bidi: bidi-override; | 
            
                                                        
            
                                    
            
            
                | 74 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 75 |  |  | }'); | 
            
                                                        
            
                                    
            
            
                | 76 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 77 |  |  |         if (null === $linktext) { | 
            
                                                        
            
                                    
            
            
                | 78 |  |  |             $linktext = strrev($address); | 
            
                                                        
            
                                    
            
            
                | 79 |  |  |             $classes = array(); | 
            
                                                        
            
                                    
            
            
                | 80 |  |  |             if (isset($params['class'])) { | 
            
                                                        
            
                                    
            
            
                | 81 |  |  |                 $classes = $params['class']; | 
            
                                                        
            
                                    
            
            
                | 82 |  |  |                 $classes = explode(' ', $classes); | 
            
                                                        
            
                                    
            
            
                | 83 |  |  |             } | 
            
                                                        
            
                                    
            
            
                | 84 |  |  |             if (! in_array($this->mailtoclass, $classes)) { | 
            
                                                        
            
                                    
            
            
                | 85 |  |  |                 $classes[] = $this->mailtoclass; | 
            
                                                        
            
                                    
            
            
                | 86 |  |  |             } | 
            
                                                        
            
                                    
            
            
                | 87 |  |  |             $params['class'] = implode(' ', $classes); | 
            
                                                        
            
                                    
            
            
                | 88 |  |  |         } | 
            
                                                        
            
                                    
            
            
                | 89 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 90 |  |  |         $xhtml = '<a href="' . $url . '"' . $this->htmlAttribs($params) . '>' . $linktext . '</a>'; | 
            
                                                        
            
                                    
            
            
                | 91 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 92 |  |  |         return $xhtml; | 
            
                                                        
            
                                    
            
            
                | 93 |  |  |     } | 
            
                                                        
            
                                    
            
            
                | 94 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 95 |  |  |  | 
            
                        
Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the interface: