Effective email obfuscation in PHP
http://www.celticproductions.net/articles/10/email/php+email+obfuscator.html
I've created Composer package from above code with minor additions (code clean-up, random variable names).
// helper function
echo obfuscate_email('[email protected]');
echo obfuscate_email('[email protected]', 'Contact us');
// class
echo \Kminek\EmailObfuscator::obfuscate('[email protected]');
echo \Kminek\EmailObfuscator::obfuscate('[email protected]', 'Contact us');