(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.
如果成功则返回 TRUE,失败则返回 FALSE。
例 1. rename_function() example
<?php rename_function('mysql_connect', 'debug_mysql_connect' ); ?>