posix_access() constants

Note:

These constants are available starting with PHP 5.1.0. Please note that some of them may not be available on your system.

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.