PHP Syntax Error

in the above code php tag is written incorrectly.
the correct way to write php tag is

<? php

// any php code

?>

OR

<?

// any php code

?>

also the echo function is not written correctly. the string which you want to be displayed on the web page must be placed in quotes.

quotes are not required when we wants to print value of a variable.
at last correct form of writing the above code,

<?php
echo "i am here";
?>