# Output Control Functions

# See Also

See also header() and setcookie().

## Table of Contents

- flush — Flush system output buffer
- ob_clean — Clean (erase) the contents of the active output buffer
- ob_end_clean — Clean (erase) the contents of the active output buffer and turn it off
- ob_end_flush — Flush (send) the return value of the active output handler and turn the active output buffer off
- ob_flush — Flush (send) the return value of the active output handler
- ob_get_clean — Get the contents of the active output buffer and turn it off
- ob_get_contents — Return the contents of the output buffer
- ob_get_flush — Flush (send) the return value of the active output handler, return the contents of the active output buffer and turn it off
- ob_get_length — Return the length of the output buffer
- ob_get_level — Return the nesting level of the output buffering mechanism
- ob_get_status — Get status of output buffers
- ob_implicit_flush — Turn implicit flush on/off
- ob_list_handlers — List all output handlers in use
- ob_start — Turn on output buffering
- output_add_rewrite_var — Add URL rewriter values
- output_reset_rewrite_vars — Reset URL rewriter values

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