streamWrapper::stream_open
(PHP 4 >= 4.3.2, PHP 5, PHP 7)
streamWrapper::stream_open — Opens file or URL
说明
$path ,
string $mode ,
int $options ,
string &$opened_path ) :
bool
This method is called immediately after the wrapper is initialized (f.e. by fopen() and file_get_contents()).
参数
-
path -
Specifies the URL that was passed to the original function.
Note:
The URL can be broken apart with parse_url(). Note that only URLs delimited by :// are supported. : and :/ while technically valid URLs, are not.
-
mode -
The mode used to open the file, as detailed for fopen().
Note:
Remember to check if the
modeis valid for thepathrequested. -
options -
Holds additional flags set by the streams API. It can hold one or more of the following values OR'd together.
Flag Description STREAM_USE_PATHIf pathis relative, search for the resource using the include_path.STREAM_REPORT_ERRORSIf this flag is set, you are responsible for raising errors using trigger_error() during opening of the stream. If this flag is not set, you should not raise any errors. -
opened_path -
If the
pathis opened successfully, andSTREAM_USE_PATHis set inoptions,opened_pathshould be set to the full path of the file/resource that was actually opened.
返回值
成功时返回 TRUE， 或者在失败时返回 FALSE。
错误／异常
调用此方法失败将给出 E_WARNING（未实现）。
注释
Note:
当合法的上下文传递给调用函数时，属性 streamWrapper::$context 会被改变。
