php man page for rename_function

RENAME_FUNCTION(3)							 1							RENAME_FUNCTION(3)

rename_function - Renames orig_name to new_name in the global function table

SYNOPSIS
       bool rename_function (string  $original_name, string  $new_name)

DESCRIPTION
	Renames a orig_name to new_name in the global function table. Useful for temporarily overriding built-in functions.

PARAMETERS
	      o $original_name
		- The original function name.

	      o $new_name
		- The new name for the $original_name function.

RETURN VALUES
	Returns TRUE on success or FALSE on failure.

EXAMPLES
       Example #1

	      rename_function(3) example

	      <?php
	      rename_function('mysql_connect', 'debug_mysql_connect' );
	      ?>

PHP Documentation Group 													RENAME_FUNCTION(3)