PHP encoded email address

1. Using this code, any email address can be encoded as an html character entity to prevent it from being collected by spam programs.

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 = '';

 $encoded = '';

 return $encoded;
}