posix_access
Determine accessibility of a file
Description
bool posix_access(string $filename, int $flags = 0)
Parameters
-
filename
-
The name of the file to be tested.
-
flags
-
A mask consisting of one or more of POSIX_F_OK,
POSIX_R_OK, POSIX_W_OK and
POSIX_X_OK.
POSIX_R_OK, POSIX_W_OK and
POSIX_X_OK request checking whether the file
exists and has read, write and execute permissions, respectively.
POSIX_F_OK just requests checking for the
existence of the file.
Return Values
Returns true on success or false on failure.
Examples
Example #1 posix_access example
This example will check if the $file is readable and writable, otherwise
will print an error message.
<?php
$file = 'some_file';
if (posix_access($file, POSIX_R_OK | POSIX_W_OK)) {
echo 'The file is readable and writable!';
} else {
$error = posix_get_last_error();
echo "Error $error: " . posix_strerror($error);
}
?>
See Also
- posix_get_last_error
- posix_strerror