Zend_Service_ReCaptcha_MailHide can be used to hide email
addresses. It will replace a part of an email address with a link that opens a popup
window with a reCAPTCHA challenge. Solving the challenge will reveal the complete
email address.
In order to use this component you will need an account to generate public and private keys for the mailhide API.
Example 815. Using the mail hide component
<?php
// The mail address we want to hide
$mail = 'mail@example.com';
// Create an instance of the mailhide component, passing it your public
// and private keys, as well as the mail address you want to hide
$mailHide = new Zend_Service_ReCaptcha_MailHide();
$mailHide->setPublicKey($pubKey);
$mailHide->setPrivateKey($privKey);
$mailHide->setEmail($mail);
// Display it
print($mailHide);
The example above will display "m...@example.com" where "..." has a link that opens up a popup window with a reCAPTCHA challenge.
The public key, private key, and the email address can also be specified in the constructor of the class. A fourth argument also exists that enables you to set some options for the component. The available options are listed in the following table:
Table 152. Zend_Service_ReCaptcha_MailHide options
| Option | Description | Expected Values | Default Value |
|---|---|---|---|
| linkTitle | The title attribute of the link | string | 'Reveal this e-mail address' |
| linkHiddenText | The text that includes the popup link | string | '...' |
| popupWidth | The width of the popup window | int | 500 |
| popupHeight | The height of the popup window | int | 300 |
The configuration options can be set by sending them as the fourth argument to the
constructor or by calling setOptions($options), which takes
an associative array or an instance of Zend_Config.
Example 816. Generating many hidden email addresses
<?php
// Create an instance of the mailhide component, passing it your public
// and private keys, as well as some configuration options
$mailHide = new Zend_Service_ReCaptcha_MailHide();
$mailHide->setPublicKey($pubKey);
$mailHide->setPrivateKey($privKey);
$mailHide->setOptions(array(
'linkTitle' => 'Click me',
'linkHiddenText' => '+++++',
));
// The mail addresses we want to hide
$mailAddresses = array(
'mail@example.com',
'johndoe@example.com',
'janedoe@example.com',
);
foreach ($mailAddresses as $mail) {
$mailHide->setEmail($mail);
print($mailHide);
}