ConFoo: Call for paper is now Open

预定义常量

下列常量由此扩展定义,且仅在此扩展编译入 PHP 或在运行时动态载入时可用。

POSIX_F_OK (integer)
Check whether the file exists.
POSIX_R_OK (integer)
Check whether the file exists and has read permissions.
POSIX_W_OK (integer)
Check whether the file exists and has write permissions.
POSIX_X_OK (integer)
Check whether the file exists and has execute permissions.
POSIX_S_IFBLK (integer)
Block special file
POSIX_S_IFCHR (integer)
Character special file
POSIX_S_IFIFO (integer)
FIFO (named pipe) special file
POSIX_S_IFREG (integer)
Normal file
POSIX_S_IFSOCK (integer)
Socket

Note:

These constants are available since PHP 5.1.0. Please also note that some of them may not be available in your system.

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