ob_get_length in PHP

ob_get_length — Return the length of the output buffer
Syntax:int ob_get_length ( void )
This will return the length of the contents in the output buffer.
Return Values:Returns the length of the output buffer contents or FALSE if no buffering is active.
Example #1 A simple ob_get_length() example
<?php
ob_start();
echo "Hello ";
$len1 = ob_get_length();
echo "World";
$len2 = ob_get_length();
ob_end_clean();
echo $len1 . ", ." . $len2;
?>
Output:6, 11