(PECL)
Renames a orig_name to new_name in the global function table. Useful for temporarily overriding built-in functions.
original_name
The original function name.
new_name
The new name for the original_name function.
Returns TRUE on success or FALSE on failure.
Example 1. rename_function() example
<?phprename_function('mysql_connect', 'debug_mysql_connect' );?>