- ob_get_clean: documentation ( source)
- ob_start: documentation ( source)
- output_add_rewrite_var: documentation ( source)
- ob_get_level: documentation ( source)
<?php
ob_start();
echo "Fill buffer\n";
output_add_rewrite_var('someParam', 1);
echo "Level: " . ob_get_level() . "\n";
echo ob_get_clean();