php编码电子邮件地址

使用此代码，可以将任何电子邮件地址编码为 HTML 字符实体，以防止被垃圾邮件程序收集。

function encode_email($email='info@domain.com', $linkText='Contact Us', $attrs ='class="emailencoder"' )
{
    // remplazar aroba y puntos
    $email = str_replace('@', '', $email);
    $email = str_replace('.', '', $email);
    $email = str_split($email, 5);  
    $linkText = str_replace('@', '', $linkText);
    $linkText = str_replace('.', '', $linkText);
    $linkText = str_split($linkText, 5);  
    $part1 = '<a href="ma';
    $part2 = 'ilto';
    $part3 = '" '. $attrs .' >';
    $part4 = '</a>';  
    $encoded = '<script type="text/javascript">';
    $encoded .= "document.write('$part1');";
    $encoded .= "document.write('$part2');";
    foreach($email as $e)
    {
            $encoded .= "document.write('$e');";
    }
    $encoded .= "document.write('$part3');";
    foreach($linkText as $l)
    {
            $encoded .= "document.write('$l');";
    }
    $encoded .= "document.write('$part4');";
    $encoded .= '</script>';  
    return $encoded;
}