(PHP 4 >= 4.0.2, PHP 5)
This will return the length of the contents in the output buffer or FALSE, if output buffering isn't active.
例 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; ?>
Our example will output:
6, 11
See also ob_start() and ob_get_contents().