(no version information, might be only in CVS)
php_stream_is -- Determines if a stream is of a particular type
Description
int
php_stream_is ( php_stream * stream, int istype )
php_stream_is() returns 1 if stream is of
the type specified by istype, or 0 otherwise.
表格 1. Values for istype
| Value | Meaning |
|---|
| PHP_STREAM_IS_STDIO | The stream is implemented using the stdio implementation |
| PHP_STREAM_IS_SOCKET | The stream is implemented using the network socket implementation |
| PHP_STREAM_IS_USERSPACE | The stream is implemented using the userspace object implementation |
| PHP_STREAM_IS_MEMORY | The stream is implemented using the grow-on-demand memory stream implementation |
注:
The PHP_STREAM_IS_XXX "constants" are actually defined as pointers to the underlying
stream operations structure. If your extension (or some other extension) defines additional
streams, it should also declare a PHP_STREAM_IS_XXX constant in it's header file that you
can use as the basis of this comparison.
注:
This function is implemented as a simple (and fast) pointer comparison, and does not change
the stream state in any way.
See also php_stream_cast() and php_stream_can_cast().
php_stream_is_persistent