- assert: documentation ( source)
- ob_start: documentation ( source)
- ob_get_level: documentation ( source)
- ob_end_clean: documentation ( source)
- header: documentation ( source)
<?php
// Simulate PHP setting for output_buffering.
ob_start();
assert(1 === ob_get_level());
ob_end_clean();
assert(0 === ob_get_level());
print 'before the header';
header('AAA:BBB');