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

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

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

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

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

(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 (send) the output buffer and turn off output buffering

(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