php编码电子邮件地址的函数

<?php
function encode_email($email='test@jb200.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;
}
?>