Begin of file language?

[edi67]

One silly question but i not understood the REAL begin code for every file language some begin with <? someone with <?php others <php

What is correct for begin ??

[Compuart]

I would say '<php' is invalid, '<?php' is preferred and '<?' is allowed, though discouraged.

[edi67]

I would say '<php' is invalid, '<?php' is preferred and '<?' is allowed, though discouraged.

Thx for explain me better, sorry but the end always ?>  ?

[Compuart]

Yes.

[edi67]

Yes.

thx