call_user_func_array() no longer accepts null as a second parameter and calls the function. It now emits a warning and does not call the function.
尽管大多数现有的 PHP 5 代码无需改变就可以工作,但是请注意一些不向下兼容的变化:
FALSE
. PDO::MYSQL_ATTR_READ_DEFAULT_FILE
和 PDO::MYSQL_ATTR_READ_DEFAULT_GROUP
将是未定义的. 以下关键词被保留,将不能被用作函数名, 类名等。
call_user_func_array() no longer accepts null as a second parameter and calls the function. It now emits a warning and does not call the function.
gd_info():
Note:
Previous to PHP 5.3.0, the JPEG Support attribute was named JPG Support.
Be aware of this, in case you verify GD image support by this attribute!