PHP Clear Echo Messages
<?php
ob_start();
echo 'a';
print 'b';
// some statement that removes all printed/echoed items
ob_end_clean();
echo 'c';
// the final output is equal to 'c', not 'abc'
?>
// https://stackoverflow.com/questions/1057986/how-to-clear-previously-echoed-items-in-php
ammer