Syntax issue?

This bit of code has worked for a while but on a new site (and host) is causing an error: Parse error: syntax error, unexpected '=' in /admin.php on line 111

<?php=$_GET['do']?>

For php shorthand tag
<?=$_GET['do']?>
OR
<?php echo $_GET['do'];?>

You should use the full tags, because of the conflict with XML declarations. So as kokjj87 said use.

<?php echo $_GET['do'] ?>