(PHP 4 >= 4.2.0, PHP 5, PHP 7) Flush (send) the output buffer

(PHP 4, PHP 5, PHP 7) Turn implicit flush on/off

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Reset URL rewriter values

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Return the length of the output buffer

(PHP 4, PHP 5, PHP 7) Flush (send) the output buffer and turn off output buffering

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Get status of output buffers

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Clean (erase) the output buffer

(PHP 4, PHP 5, PHP 7) Flush system output buffer

(PHP 4, PHP 5, PHP 7) Return the contents of the output buffer

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Add URL rewriter values