Web Standards Programmer's Reference: HTML, CSS, JavaScript®, Perl, Python®, and PHP

F.27. Output Buffering

Function	Returns	Description
ob_list_handlers()	false|array	Lists all output_buffers in an array.
ob_start([ string|array user_function [, int chunk_size [, bool erase]]])	bool	Turns on Output Buffering (specifying an optional output handler).
ob_flush(void)	bool	Flushes (sends) contents of the output buffer. The last buffer content is sent to next buffer.
ob_clean(void)	bool	Cleans (deletes) the current output buffer.
ob_end_flush(void)	bool	Flushes (sends) the output buffer, and deletes current output buffer.
ob_end_clean(void)	bool	Cleans the output buffer, and deletes current output buffer.
ob_get_flush(void)	bool	Gets current buffer contents, flushes (sends) the output buffer, and deletes current output buffer.
ob_get_clean(void)	bool	Gets current buffer contents and deletes current output buffer.
ob_get_contents(void)	string	Returns the contents of the output buffer.
ob_get_level(void)	int	Returns the nesting level of the output buffer.
ob_get_length(void)	int	Returns the length of the output buffer.
ob_get_status([bool full_status])	false|array	Returns the status of the active or all output buffers.
ob_implicit_flush([int flag])	void	Turns implicit flush on/off and is equivalent to calling flush() after every output call.
output_reset_rewrite_vars(void)	bool	Resets (clears) URL rewriter values.
output_add_rewrite_var(string name, string value)	bool	Adds URL rewriter values.