如何在PHP中回显at（@）符号？

Question

Using PHP, how can I echo an at (@) sign?

Ultimately, I'm trying to print out an e-mail address to a shell, that should look like this: '[e-mail]', but it ends up looking like this: 'usersite.com'.

I see that all these (echo, exec, shell_exec, sprintf, vsprintf) behave like this so I suspect I need to escape it in some way? 

Answer 1

I think you are doing something wrong, there is no escaping neccessary:

echo "[e-mail]";