Get your own PHP server Result Size: 625 x 565
x
 
<!DOCTYPE html>
<html>
<body>
<?php
ob_start();
echo "Hello World!";
$length = ob_get_length();
ob_end_clean();
echo "The contents of the buffer are $length characters long";
?>
</body>
</html>
The contents of the buffer are 12 characters long