PYTHON posix_access

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Python replacement for PHP's posix_access [ edit | history ] 
import os
os.access(file, mode)

mode is one of: os.F_OK, os.R_OK, os.W_OK, os.X_OK

PHP posix_access

PHP original manual for posix_access [ show | php.net ]

posix_access

(PHP 5 >= 5.1.0)

posix_access — Determine accessibility of a file

Description

bool posix_access ( string $file [, int $mode= POSIX_F_OK ] )

posix_access() checks the user's permission of a file.

Parameters

file

The name of the file to be tested.

mode

A mask consisting of one or more of POSIX_F_OK, POSIX_R_OK, POSIX_W_OK and POSIX_X_OK. Defaults to POSIX_F_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);
}

?>

Notes

Note: When safe mode is enabled, PHP checks whether the files or directories being operated upon have the same UID (owner) as the script that is being executed.

See Also

POSIX Functions
PHP Manual